./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- 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-38b53e6 [2022-11-25 17:05:08,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:05:08,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:05:08,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:05:08,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:05:08,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:05:08,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:05:08,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:05:08,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:05:08,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:05:08,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:05:08,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:05:08,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:05:08,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:05:08,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:05:08,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:05:08,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:05:08,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:05:08,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:05:08,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:05:08,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:05:08,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:05:08,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:05:08,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:05:08,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:05:08,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:05:08,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:05:08,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:05:08,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:05:08,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:05:08,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:05:08,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:05:08,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:05:08,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:05:08,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:05:08,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:05:08,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:05:08,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:05:08,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:05:08,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:05:08,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:05:08,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:05:08,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:05:08,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:05:08,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:05:08,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:05:08,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:05:08,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:05:08,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:05:08,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:05:08,333 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:05:08,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:05:08,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:05:08,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:05:08,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:05:08,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:05:08,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:05:08,335 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:05:08,335 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:05:08,335 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:05:08,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:05:08,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:05:08,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:05:08,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:05:08,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:05:08,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:05:08,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:05:08,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:05:08,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:05:08,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:05:08,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:05:08,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:05:08,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:05:08,338 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:05:08,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:05:08,339 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2022-11-25 17:05:08,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:05:08,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:05:08,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:05:08,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:05:08,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:05:08,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-11-25 17:05:11,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:05:12,089 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:05:12,089 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-11-25 17:05:12,100 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/7e5cfbb15/65cffc206ae1488a9f9cc1fe17c92e5a/FLAGfc527edc5 [2022-11-25 17:05:12,120 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/7e5cfbb15/65cffc206ae1488a9f9cc1fe17c92e5a [2022-11-25 17:05:12,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:05:12,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:05:12,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:12,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:05:12,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:05:12,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:12" (1/1) ... [2022-11-25 17:05:12,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5e8fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:12, skipping insertion in model container [2022-11-25 17:05:12,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:12" (1/1) ... [2022-11-25 17:05:12,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:05:12,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:05:12,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:12,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:12,419 WARN L237 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-11-25 17:05:12,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:12,447 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 17:05:12,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5286e735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:12, skipping insertion in model container [2022-11-25 17:05:12,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:12,450 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:05:12,452 INFO L158 Benchmark]: Toolchain (without parser) took 325.18ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 102.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:05:12,453 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:05:12,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.72ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 102.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:05:12,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.72ms. Allocated memory is still 144.7MB. Free memory was 114.5MB in the beginning and 102.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- 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-38b53e6 [2022-11-25 17:05:14,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:05:14,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:05:14,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:05:14,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:05:14,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:05:14,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:05:14,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:05:14,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:05:14,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:05:14,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:05:14,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:05:14,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:05:14,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:05:14,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:05:14,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:05:14,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:05:14,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:05:14,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:05:14,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:05:14,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:05:14,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:05:14,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:05:14,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:05:14,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:05:14,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:05:14,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:05:14,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:05:14,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:05:14,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:05:14,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:05:14,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:05:14,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:05:14,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:05:14,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:05:14,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:05:14,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:05:14,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:05:14,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:05:14,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:05:14,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:05:14,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:05:14,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:05:14,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:05:14,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:05:14,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:05:14,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:05:14,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:05:14,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:05:14,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:05:14,900 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:05:14,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:05:14,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:05:14,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:05:14,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:05:14,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:05:14,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:05:14,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:05:14,902 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:05:14,902 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:05:14,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:05:14,902 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:05:14,903 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:05:14,903 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:05:14,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:05:14,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:05:14,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:05:14,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:05:14,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:05:14,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:05:14,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:05:14,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:05:14,905 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:05:14,905 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:05:14,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:05:14,905 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:05:14,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:05:14,906 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:05:14,906 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2022-11-25 17:05:15,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:05:15,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:05:15,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:05:15,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:05:15,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:05:15,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-11-25 17:05:18,468 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:05:18,766 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:05:18,767 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-11-25 17:05:18,778 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/1dcde7a79/21c4245a4bc84fd6a38d9504ba6fa4a7/FLAG82a019352 [2022-11-25 17:05:18,808 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/data/1dcde7a79/21c4245a4bc84fd6a38d9504ba6fa4a7 [2022-11-25 17:05:18,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:05:18,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:05:18,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:18,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:05:18,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:05:18,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:18" (1/1) ... [2022-11-25 17:05:18,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5c7df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:18, skipping insertion in model container [2022-11-25 17:05:18,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:05:18" (1/1) ... [2022-11-25 17:05:18,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:05:18,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:05:19,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,143 WARN L237 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-11-25 17:05:19,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:19,172 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:05:19,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:05:19,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,217 WARN L237 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-11-25 17:05:19,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:19,231 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:05:19,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:05:19,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:05:19,280 WARN L237 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_5eb85b4f-3597-4f52-a6ed-476f23badfbe/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-11-25 17:05:19,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:05:19,340 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:05:19,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19 WrapperNode [2022-11-25 17:05:19,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:05:19,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:05:19,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:05:19,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:05:19,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,408 INFO L138 Inliner]: procedures = 28, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 302 [2022-11-25 17:05:19,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:05:19,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:05:19,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:05:19,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:05:19,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,450 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:05:19,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:05:19,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:05:19,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:05:19,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (1/1) ... [2022-11-25 17:05:19,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:05:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:05:19,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:05:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:05:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:05:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:05:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:05:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:05:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:05:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:05:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:05:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:05:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:05:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:05:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:05:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:05:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:05:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:05:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:05:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:05:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:05:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:05:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:05:19,577 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:05:19,788 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:05:19,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:05:20,934 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:05:21,260 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:05:21,260 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 17:05:21,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:05:21 BoogieIcfgContainer [2022-11-25 17:05:21,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:05:21,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:05:21,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:05:21,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:05:21,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:05:18" (1/3) ... [2022-11-25 17:05:21,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b16d49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:05:21, skipping insertion in model container [2022-11-25 17:05:21,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:05:19" (2/3) ... [2022-11-25 17:05:21,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b16d49e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:05:21, skipping insertion in model container [2022-11-25 17:05:21,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:05:21" (3/3) ... [2022-11-25 17:05:21,282 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2022-11-25 17:05:21,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:05:21,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-25 17:05:21,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:05:21,499 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:05:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 266 transitions, 564 flow [2022-11-25 17:05:21,758 INFO L130 PetriNetUnfolder]: 19/262 cut-off events. [2022-11-25 17:05:21,760 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:05:21,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 262 events. 19/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2022-11-25 17:05:21,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 266 transitions, 564 flow [2022-11-25 17:05:21,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 257 transitions, 538 flow [2022-11-25 17:05:21,795 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:05:21,827 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 257 transitions, 538 flow [2022-11-25 17:05:21,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 257 transitions, 538 flow [2022-11-25 17:05:21,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 257 transitions, 538 flow [2022-11-25 17:05:21,937 INFO L130 PetriNetUnfolder]: 19/257 cut-off events. [2022-11-25 17:05:21,937 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:05:21,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 257 events. 19/257 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2022-11-25 17:05:21,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 3160 [2022-11-25 17:06:04,585 WARN L233 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 163 DAG size of output: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:06:18,828 WARN L233 SmtUtils]: Spent 12.50s on a formula simplification. DAG size of input: 166 DAG size of output: 165 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:06:20,816 INFO L134 LiptonReduction]: Checked pairs total: 5923 [2022-11-25 17:06:20,817 INFO L136 LiptonReduction]: Total number of compositions: 267 [2022-11-25 17:06:20,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:20,837 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@cbdd38e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:20,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-25 17:06:20,840 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:06:20,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:20,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:20,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:06:20,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:20,847 INFO L85 PathProgramCache]: Analyzing trace with hash 39784, now seen corresponding path program 1 times [2022-11-25 17:06:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395851543] [2022-11-25 17:06:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:20,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:20,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:06:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:21,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:06:21,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:21,343 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-25 17:06:21,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-25 17:06:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:21,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:21,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:21,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395851543] [2022-11-25 17:06:21,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395851543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:21,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:21,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407428252] [2022-11-25 17:06:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:21,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:21,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2022-11-25 17:06:21,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:21,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:21,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2022-11-25 17:06:21,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:25,090 INFO L130 PetriNetUnfolder]: 15607/19501 cut-off events. [2022-11-25 17:06:25,090 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-11-25 17:06:25,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39180 conditions, 19501 events. 15607/19501 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 96575 event pairs, 10106 based on Foata normal form. 0/5175 useless extension candidates. Maximal degree in co-relation 34200. Up to 19205 conditions per place. [2022-11-25 17:06:25,288 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 54 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-11-25 17:06:25,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 61 transitions, 256 flow [2022-11-25 17:06:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2022-11-25 17:06:25,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44903064415259536 [2022-11-25 17:06:25,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2022-11-25 17:06:25,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2022-11-25 17:06:25,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:25,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2022-11-25 17:06:25,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:25,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:25,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:25,341 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 152 flow. Second operand 3 states and 718 transitions. [2022-11-25 17:06:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 61 transitions, 256 flow [2022-11-25 17:06:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:06:25,397 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 132 flow [2022-11-25 17:06:25,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2022-11-25 17:06:25,405 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2022-11-25 17:06:25,405 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 132 flow [2022-11-25 17:06:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:25,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:25,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:06:25,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 17:06:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:25,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 39785, now seen corresponding path program 1 times [2022-11-25 17:06:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:25,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010711576] [2022-11-25 17:06:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:25,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:06:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:25,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:06:25,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:26,027 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 17:06:26,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 17:06:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:26,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:26,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:26,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010711576] [2022-11-25 17:06:26,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010711576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:26,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:26,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:26,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401336678] [2022-11-25 17:06:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:26,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:26,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2022-11-25 17:06:26,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:26,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:26,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2022-11-25 17:06:26,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:31,311 INFO L130 PetriNetUnfolder]: 31218/39009 cut-off events. [2022-11-25 17:06:31,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:31,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77732 conditions, 39009 events. 31218/39009 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 207029 event pairs, 20212 based on Foata normal form. 0/10749 useless extension candidates. Maximal degree in co-relation 77726. Up to 19206 conditions per place. [2022-11-25 17:06:31,644 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 103 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2022-11-25 17:06:31,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 458 flow [2022-11-25 17:06:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2022-11-25 17:06:31,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4809255784865541 [2022-11-25 17:06:31,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2022-11-25 17:06:31,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2022-11-25 17:06:31,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:31,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2022-11-25 17:06:31,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:31,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:31,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:31,666 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 132 flow. Second operand 3 states and 769 transitions. [2022-11-25 17:06:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 458 flow [2022-11-25 17:06:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 113 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:06:31,670 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 163 flow [2022-11-25 17:06:31,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2022-11-25 17:06:31,672 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2022-11-25 17:06:31,672 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 163 flow [2022-11-25 17:06:31,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:31,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:31,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:06:31,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:31,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1239913, now seen corresponding path program 1 times [2022-11-25 17:06:31,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:31,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625446260] [2022-11-25 17:06:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:31,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:31,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:31,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 17:06:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:32,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 17:06:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:32,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,322 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 17:06:32,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-25 17:06:32,395 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-25 17:06:32,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-25 17:06:32,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:32,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 17:06:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:32,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:32,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:32,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625446260] [2022-11-25 17:06:32,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625446260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:32,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:32,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49337881] [2022-11-25 17:06:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:32,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:06:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:06:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:06:32,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 533 [2022-11-25 17:06:32,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:32,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:32,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 533 [2022-11-25 17:06:32,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:36,506 INFO L130 PetriNetUnfolder]: 25213/31747 cut-off events. [2022-11-25 17:06:36,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:36,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63232 conditions, 31747 events. 25213/31747 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2062. Compared 168127 event pairs, 16212 based on Foata normal form. 0/9103 useless extension candidates. Maximal degree in co-relation 63223. Up to 31155 conditions per place. [2022-11-25 17:06:36,751 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 55 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2022-11-25 17:06:36,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 271 flow [2022-11-25 17:06:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-25 17:06:36,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45653533458411505 [2022-11-25 17:06:36,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-25 17:06:36,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-25 17:06:36,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:36,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-25 17:06:36,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:36,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:36,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:36,763 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 163 flow. Second operand 3 states and 730 transitions. [2022-11-25 17:06:36,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 271 flow [2022-11-25 17:06:36,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:06:36,767 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 153 flow [2022-11-25 17:06:36,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2022-11-25 17:06:36,768 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -8 predicate places. [2022-11-25 17:06:36,768 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 153 flow [2022-11-25 17:06:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:36,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:36,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:06:36,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:36,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:36,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:36,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:36,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1239912, now seen corresponding path program 1 times [2022-11-25 17:06:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:36,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968029884] [2022-11-25 17:06:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:36,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:36,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:37,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 17:06:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:37,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:06:37,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:37,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:37,367 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-25 17:06:37,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-25 17:06:38,612 INFO L321 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2022-11-25 17:06:38,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-25 17:06:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:38,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:38,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:38,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968029884] [2022-11-25 17:06:38,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968029884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:38,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:38,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902854312] [2022-11-25 17:06:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:38,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:39,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 533 [2022-11-25 17:06:39,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:39,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:39,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 533 [2022-11-25 17:06:39,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:42,385 INFO L130 PetriNetUnfolder]: 19213/24495 cut-off events. [2022-11-25 17:06:42,385 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:42,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48725 conditions, 24495 events. 19213/24495 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1486. Compared 130446 event pairs, 12212 based on Foata normal form. 0/7851 useless extension candidates. Maximal degree in co-relation 48716. Up to 23903 conditions per place. [2022-11-25 17:06:42,526 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 53 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2022-11-25 17:06:42,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 257 flow [2022-11-25 17:06:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2022-11-25 17:06:42,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4515322076297686 [2022-11-25 17:06:42,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2022-11-25 17:06:42,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2022-11-25 17:06:42,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:42,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2022-11-25 17:06:42,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:42,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:42,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:42,539 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 153 flow. Second operand 3 states and 722 transitions. [2022-11-25 17:06:42,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 257 flow [2022-11-25 17:06:42,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:06:42,541 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 150 flow [2022-11-25 17:06:42,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2022-11-25 17:06:42,543 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2022-11-25 17:06:42,543 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 150 flow [2022-11-25 17:06:42,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:42,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:42,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:06:42,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:42,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:42,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1238524, now seen corresponding path program 1 times [2022-11-25 17:06:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:42,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669644675] [2022-11-25 17:06:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:42,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:42,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:42,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 17:06:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:42,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:06:42,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:43,157 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 17:06:43,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 17:06:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:43,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:06:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:43,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:43,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669644675] [2022-11-25 17:06:43,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669644675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:06:43,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:06:43,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 17:06:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36087697] [2022-11-25 17:06:43,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:06:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:06:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:43,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:06:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:06:44,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2022-11-25 17:06:44,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:44,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:44,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2022-11-25 17:06:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:49,918 INFO L130 PetriNetUnfolder]: 28833/36769 cut-off events. [2022-11-25 17:06:49,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:49,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73123 conditions, 36769 events. 28833/36769 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 202513 event pairs, 18318 based on Foata normal form. 0/12082 useless extension candidates. Maximal degree in co-relation 73113. Up to 11953 conditions per place. [2022-11-25 17:06:50,092 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 140 selfloop transitions, 15 changer transitions 0/161 dead transitions. [2022-11-25 17:06:50,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 161 transitions, 696 flow [2022-11-25 17:06:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:06:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:06:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1421 transitions. [2022-11-25 17:06:50,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4443402126328956 [2022-11-25 17:06:50,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1421 transitions. [2022-11-25 17:06:50,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1421 transitions. [2022-11-25 17:06:50,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:50,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1421 transitions. [2022-11-25 17:06:50,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 236.83333333333334) internal successors, (1421), 6 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:50,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:50,111 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:50,111 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 150 flow. Second operand 6 states and 1421 transitions. [2022-11-25 17:06:50,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 161 transitions, 696 flow [2022-11-25 17:06:50,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 161 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:06:50,115 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 262 flow [2022-11-25 17:06:50,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2022-11-25 17:06:50,116 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2022-11-25 17:06:50,116 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 262 flow [2022-11-25 17:06:50,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:50,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:50,117 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:06:50,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:50,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1191584953, now seen corresponding path program 1 times [2022-11-25 17:06:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179168402] [2022-11-25 17:06:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:50,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:50,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:50,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:50,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 17:06:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:06:50,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,712 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-25 17:06:50,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-25 17:06:50,763 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 17:06:50,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-25 17:06:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:50,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 17:06:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:50,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:50,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:50,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179168402] [2022-11-25 17:06:50,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179168402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:50,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:50,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485358598] [2022-11-25 17:06:50,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:06:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:06:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:06:51,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 533 [2022-11-25 17:06:51,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:51,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:51,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 533 [2022-11-25 17:06:51,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:54,967 INFO L130 PetriNetUnfolder]: 27602/35138 cut-off events. [2022-11-25 17:06:54,967 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:06:55,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69926 conditions, 35138 events. 27602/35138 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2046. Compared 193602 event pairs, 17409 based on Foata normal form. 0/11482 useless extension candidates. Maximal degree in co-relation 69911. Up to 34250 conditions per place. [2022-11-25 17:06:55,155 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 62 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2022-11-25 17:06:55,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 384 flow [2022-11-25 17:06:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2022-11-25 17:06:55,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4540337711069418 [2022-11-25 17:06:55,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2022-11-25 17:06:55,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2022-11-25 17:06:55,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:55,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2022-11-25 17:06:55,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:55,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:55,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:55,163 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 262 flow. Second operand 3 states and 726 transitions. [2022-11-25 17:06:55,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 384 flow [2022-11-25 17:06:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 365 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:06:55,166 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 241 flow [2022-11-25 17:06:55,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2022-11-25 17:06:55,167 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2022-11-25 17:06:55,168 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 241 flow [2022-11-25 17:06:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:55,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:55,168 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:06:55,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:06:55,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:55,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:06:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1191584954, now seen corresponding path program 1 times [2022-11-25 17:06:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:06:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173607088] [2022-11-25 17:06:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:55,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:06:55,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:06:55,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:06:55,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 17:06:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:06:55,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:06:55,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:06:55,677 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-25 17:06:55,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-25 17:06:56,605 INFO L321 Elim1Store]: treesize reduction 58, result has 27.5 percent of original size [2022-11-25 17:06:56,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 44 [2022-11-25 17:06:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:56,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:06:56,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:06:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173607088] [2022-11-25 17:06:56,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173607088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:56,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:56,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885572804] [2022-11-25 17:06:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:06:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:57,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 533 [2022-11-25 17:06:57,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:57,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:57,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 533 [2022-11-25 17:06:57,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:00,802 INFO L130 PetriNetUnfolder]: 26381/33527 cut-off events. [2022-11-25 17:07:00,802 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 17:07:00,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66695 conditions, 33527 events. 26381/33527 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 182968 event pairs, 16500 based on Foata normal form. 0/11176 useless extension candidates. Maximal degree in co-relation 66679. Up to 32639 conditions per place. [2022-11-25 17:07:01,131 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 60 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2022-11-25 17:07:01,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 359 flow [2022-11-25 17:07:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:07:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:07:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2022-11-25 17:07:01,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44903064415259536 [2022-11-25 17:07:01,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2022-11-25 17:07:01,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2022-11-25 17:07:01,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:01,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2022-11-25 17:07:01,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:01,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:01,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:01,141 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 241 flow. Second operand 3 states and 718 transitions. [2022-11-25 17:07:01,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 359 flow [2022-11-25 17:07:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:07:01,143 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 238 flow [2022-11-25 17:07:01,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2022-11-25 17:07:01,144 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-11-25 17:07:01,144 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 238 flow [2022-11-25 17:07:01,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:01,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:01,145 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:07:01,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-25 17:07:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:07:01,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:07:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1752684503, now seen corresponding path program 2 times [2022-11-25 17:07:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:07:01,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78700814] [2022-11-25 17:07:01,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:07:01,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:07:01,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:07:01,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:07:01,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 17:07:01,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:07:01,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:07:01,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:07:01,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:07:01,710 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 17:07:01,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 17:07:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:01,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:07:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:02,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:07:02,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78700814] [2022-11-25 17:07:02,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78700814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:07:02,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:07:02,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 17:07:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668278546] [2022-11-25 17:07:02,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:07:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:07:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:07:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:07:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:07:08,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2022-11-25 17:07:08,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 238 flow. Second operand has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:08,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:08,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2022-11-25 17:07:08,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:12,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:13,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:15,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:19,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:21,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:22,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 17:07:39,763 INFO L130 PetriNetUnfolder]: 87968/111819 cut-off events. [2022-11-25 17:07:39,764 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 17:07:40,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222266 conditions, 111819 events. 87968/111819 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4645. Compared 668700 event pairs, 55000 based on Foata normal form. 10/38582 useless extension candidates. Maximal degree in co-relation 222249. Up to 10885 conditions per place. [2022-11-25 17:07:40,483 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 415 selfloop transitions, 34 changer transitions 0/455 dead transitions. [2022-11-25 17:07:40,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 455 transitions, 2104 flow [2022-11-25 17:07:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:07:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 17:07:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3851 transitions. [2022-11-25 17:07:40,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45157129455909945 [2022-11-25 17:07:40,495 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3851 transitions. [2022-11-25 17:07:40,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3851 transitions. [2022-11-25 17:07:40,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:40,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3851 transitions. [2022-11-25 17:07:40,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 240.6875) internal successors, (3851), 16 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,526 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,527 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 238 flow. Second operand 16 states and 3851 transitions. [2022-11-25 17:07:40,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 455 transitions, 2104 flow [2022-11-25 17:07:40,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 455 transitions, 2103 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:07:40,537 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 500 flow [2022-11-25 17:07:40,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=500, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2022-11-25 17:07:40,542 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 21 predicate places. [2022-11-25 17:07:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 500 flow [2022-11-25 17:07:40,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.0) internal successors, (2556), 12 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:40,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:07:40,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:07:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:07:40,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-25 17:07:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1715579045, now seen corresponding path program 1 times [2022-11-25 17:07:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:07:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157368544] [2022-11-25 17:07:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:40,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:07:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:07:40,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:07:40,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb85b4f-3597-4f52-a6ed-476f23badfbe/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 17:07:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:40,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:07:40,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:07:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:40,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:07:40,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:07:40,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157368544] [2022-11-25 17:07:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157368544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:40,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:40,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:07:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878942745] [2022-11-25 17:07:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:07:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:07:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:07:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:07:41,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 533 [2022-11-25 17:07:41,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:41,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 533 [2022-11-25 17:07:41,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand