./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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_e2425b6c-3360-4696-b696-4fa19f672545/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- 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 17:32:06,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:32:06,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:32:06,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:32:06,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:32:06,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:32:06,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:32:06,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:32:06,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:32:06,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:32:06,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:32:06,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:32:06,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:32:06,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:32:06,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:32:06,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:32:06,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:32:06,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:32:06,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:32:06,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:32:06,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:32:06,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:32:06,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:32:06,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:32:06,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:32:06,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:32:06,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:32:06,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:32:06,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:32:06,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:32:06,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:32:06,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:32:06,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:32:06,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:32:06,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:32:06,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:32:06,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:32:06,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:32:06,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:32:06,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:32:06,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:32:06,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:32:06,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:32:06,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:32:06,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:32:06,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:32:06,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:32:06,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:32:06,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:32:06,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:32:06,364 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:32:06,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:32:06,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:32:06,364 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:32:06,365 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:32:06,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:32:06,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:32:06,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:32:06,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:32:06,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:32:06,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:32:06,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:32:06,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:06,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:32:06,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:32:06,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:32:06,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:32:06,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:32:06,368 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:32:06,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:32:06,368 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_e2425b6c-3360-4696-b696-4fa19f672545/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-11-25 17:32:06,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:32:06,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:32:06,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:32:06,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:32:06,622 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:32:06,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-25 17:32:09,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:32:09,836 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:32:09,837 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-25 17:32:09,844 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/8d1f2bc06/6f250ba571e14a91bc14ed52a58b1372/FLAG81a191b31 [2022-11-25 17:32:09,859 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/8d1f2bc06/6f250ba571e14a91bc14ed52a58b1372 [2022-11-25 17:32:09,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:32:09,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:32:09,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:09,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:32:09,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:32:09,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:09" (1/1) ... [2022-11-25 17:32:09,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382ae867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:09, skipping insertion in model container [2022-11-25 17:32:09,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:09" (1/1) ... [2022-11-25 17:32:09,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:32:09,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:10,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:10,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:10,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:10,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:10,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:10,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:10,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:10,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:10,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:10,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:10,156 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_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-25 17:32:10,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:10,191 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 17:32:10,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a012cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:10, skipping insertion in model container [2022-11-25 17:32:10,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:10,192 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:32:10,194 INFO L158 Benchmark]: Toolchain (without parser) took 329.77ms. Allocated memory is still 165.7MB. Free memory was 103.4MB in the beginning and 136.6MB in the end (delta: -33.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:32:10,194 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:10,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.27ms. Allocated memory is still 165.7MB. Free memory was 103.2MB in the beginning and 136.6MB in the end (delta: -33.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:32:10,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 119.5MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.27ms. Allocated memory is still 165.7MB. Free memory was 103.2MB in the beginning and 136.6MB in the end (delta: -33.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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_e2425b6c-3360-4696-b696-4fa19f672545/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- 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 17:32:12,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:32:12,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:32:12,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:32:12,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:32:12,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:32:12,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:32:12,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:32:12,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:32:12,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:32:12,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:32:12,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:32:12,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:32:12,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:32:12,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:32:12,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:32:12,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:32:12,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:32:12,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:32:12,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:32:12,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:32:12,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:32:12,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:32:12,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:32:12,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:32:12,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:32:12,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:32:12,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:32:12,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:32:12,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:32:12,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:32:12,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:32:12,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:32:12,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:32:12,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:32:12,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:32:12,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:32:12,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:32:12,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:32:12,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:32:12,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:32:12,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:32:12,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:32:12,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:32:12,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:32:12,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:32:12,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:32:12,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:32:12,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:32:12,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:32:12,424 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:32:12,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:32:12,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:32:12,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:32:12,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:32:12,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:32:12,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:32:12,426 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:32:12,427 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:32:12,427 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:32:12,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:32:12,428 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:32:12,428 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:32:12,428 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:32:12,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:32:12,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:32:12,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:32:12,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:32:12,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:32:12,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:12,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:32:12,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:32:12,431 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:32:12,431 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:12,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:32:12,432 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:32:12,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:32:12,432 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:32:12,432 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_e2425b6c-3360-4696-b696-4fa19f672545/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-11-25 17:32:12,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:32:12,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:32:12,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:32:12,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:32:12,869 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:32:12,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-25 17:32:15,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:32:16,231 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:32:16,232 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-25 17:32:16,240 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/379efc9a0/8f41c3b4d08c43e69c9f606337670e82/FLAGbef0ec091 [2022-11-25 17:32:16,254 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/data/379efc9a0/8f41c3b4d08c43e69c9f606337670e82 [2022-11-25 17:32:16,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:32:16,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:32:16,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:16,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:32:16,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:32:16,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc4ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16, skipping insertion in model container [2022-11-25 17:32:16,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:32:16,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:16,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,507 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_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-25 17:32:16,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:16,545 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:32:16,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:16,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,608 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_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-25 17:32:16,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:16,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:32:16,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:32:16,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:32:16,668 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_e2425b6c-3360-4696-b696-4fa19f672545/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-25 17:32:16,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:16,691 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:32:16,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16 WrapperNode [2022-11-25 17:32:16,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:16,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:16,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:32:16,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:32:16,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,791 INFO L138 Inliner]: procedures = 30, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 381 [2022-11-25 17:32:16,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:16,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:32:16,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:32:16,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:32:16,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:32:16,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:32:16,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:32:16,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:32:16,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (1/1) ... [2022-11-25 17:32:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:16,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:32:16,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:32:16,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:32:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 17:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:32:16,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:32:16,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:32:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:32:16,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:32:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:32:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:32:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:32:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:32:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-25 17:32:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:32:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:32:16,990 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 17:32:17,137 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:32:17,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:32:18,535 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:32:18,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:32:18,852 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-25 17:32:18,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:18 BoogieIcfgContainer [2022-11-25 17:32:18,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:32:18,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:32:18,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:32:18,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:32:18,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:32:16" (1/3) ... [2022-11-25 17:32:18,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d186f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:18, skipping insertion in model container [2022-11-25 17:32:18,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:16" (2/3) ... [2022-11-25 17:32:18,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d186f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:18, skipping insertion in model container [2022-11-25 17:32:18,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:18" (3/3) ... [2022-11-25 17:32:18,870 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-11-25 17:32:18,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:32:18,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2022-11-25 17:32:18,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:32:19,063 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:32:19,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 462 transitions, 948 flow [2022-11-25 17:32:19,336 INFO L130 PetriNetUnfolder]: 37/459 cut-off events. [2022-11-25 17:32:19,337 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:32:19,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 459 events. 37/459 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 749 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 349. Up to 2 conditions per place. [2022-11-25 17:32:19,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 462 transitions, 948 flow [2022-11-25 17:32:19,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 454 transitions, 926 flow [2022-11-25 17:32:19,370 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:32:19,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 454 transitions, 926 flow [2022-11-25 17:32:19,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 454 transitions, 926 flow [2022-11-25 17:32:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 454 transitions, 926 flow [2022-11-25 17:32:19,505 INFO L130 PetriNetUnfolder]: 37/454 cut-off events. [2022-11-25 17:32:19,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:32:19,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 454 events. 37/454 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 729 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 349. Up to 2 conditions per place. [2022-11-25 17:32:19,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 11290 [2022-11-25 17:34:01,435 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 151 DAG size of output: 150 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:34:22,519 INFO L134 LiptonReduction]: Checked pairs total: 16230 [2022-11-25 17:34:22,520 INFO L136 LiptonReduction]: Total number of compositions: 541 [2022-11-25 17:34:22,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:34:22,554 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;@307d609f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:34:22,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2022-11-25 17:34:22,557 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:34:22,557 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:34:22,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:22,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:34:22,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2022-11-25 17:34:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 63259, now seen corresponding path program 1 times [2022-11-25 17:34:22,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:22,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470385626] [2022-11-25 17:34:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:22,578 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 17:34:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:22,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:22,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:22,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:34:22,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:23,006 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 17:34:23,007 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 17:34:23,075 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 17:34:23,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:34:23,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470385626] [2022-11-25 17:34:23,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470385626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:23,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:23,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:34:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272459892] [2022-11-25 17:34:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:34:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:34:23,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:34:23,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 1003 [2022-11-25 17:34:23,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:23,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:23,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 1003 [2022-11-25 17:34:23,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:35,053 INFO L130 PetriNetUnfolder]: 30852/43203 cut-off events. [2022-11-25 17:34:35,053 INFO L131 PetriNetUnfolder]: For 644/644 co-relation queries the response was YES. [2022-11-25 17:34:35,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87089 conditions, 43203 events. 30852/43203 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 7258. Compared 334568 event pairs, 28930 based on Foata normal form. 0/8702 useless extension candidates. Maximal degree in co-relation 40680. Up to 21584 conditions per place. [2022-11-25 17:34:35,339 INFO L137 encePairwiseOnDemand]: 981/1003 looper letters, 144 selfloop transitions, 9 changer transitions 0/155 dead transitions. [2022-11-25 17:34:35,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 155 transitions, 652 flow [2022-11-25 17:34:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:34:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:34:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1345 transitions. [2022-11-25 17:34:35,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4469923562645397 [2022-11-25 17:34:35,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1345 transitions. [2022-11-25 17:34:35,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1345 transitions. [2022-11-25 17:34:35,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:35,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1345 transitions. [2022-11-25 17:34:35,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states 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 17:34:35,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1003.0) internal successors, (4012), 4 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states 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 17:34:35,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1003.0) internal successors, (4012), 4 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states 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 17:34:35,398 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 202 flow. Second operand 3 states and 1345 transitions. [2022-11-25 17:34:35,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 155 transitions, 652 flow [2022-11-25 17:34:35,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 155 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:34:35,456 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 248 flow [2022-11-25 17:34:35,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1003, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2022-11-25 17:34:35,464 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, -11 predicate places. [2022-11-25 17:34:35,464 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 248 flow [2022-11-25 17:34:35,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:35,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:35,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:34:35,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:35,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2022-11-25 17:34:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 63258, now seen corresponding path program 1 times [2022-11-25 17:34:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:35,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022997947] [2022-11-25 17:34:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:35,684 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 17:34:35,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:35,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:35,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:35,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:34:35,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:35,894 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 17:34:35,894 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-25 17:34:35,910 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 17:34:35,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:34:35,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022997947] [2022-11-25 17:34:35,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022997947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:35,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:35,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:34:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401574082] [2022-11-25 17:34:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:35,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:34:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:34:35,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:34:36,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 1003 [2022-11-25 17:34:36,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 392.6666666666667) internal successors, (1178), 3 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 17:34:36,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:36,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 1003 [2022-11-25 17:34:36,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:44,692 INFO L130 PetriNetUnfolder]: 30852/43195 cut-off events. [2022-11-25 17:34:44,692 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-11-25 17:34:44,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86618 conditions, 43195 events. 30852/43195 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 7258. Compared 334306 event pairs, 28930 based on Foata normal form. 6/8680 useless extension candidates. Maximal degree in co-relation 43270. Up to 43147 conditions per place. [2022-11-25 17:34:44,907 INFO L137 encePairwiseOnDemand]: 998/1003 looper letters, 84 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-11-25 17:34:44,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 410 flow [2022-11-25 17:34:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:34:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:34:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1257 transitions. [2022-11-25 17:34:44,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41774675972083747 [2022-11-25 17:34:44,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1257 transitions. [2022-11-25 17:34:44,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1257 transitions. [2022-11-25 17:34:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1257 transitions. [2022-11-25 17:34:44,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states 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 17:34:44,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1003.0) internal successors, (4012), 4 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states 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 17:34:44,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1003.0) internal successors, (4012), 4 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states 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 17:34:44,924 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 248 flow. Second operand 3 states and 1257 transitions. [2022-11-25 17:34:44,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 410 flow [2022-11-25 17:34:44,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:34:44,927 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 224 flow [2022-11-25 17:34:44,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1003, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2022-11-25 17:34:44,929 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2022-11-25 17:34:44,930 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 224 flow [2022-11-25 17:34:44,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.6666666666667) internal successors, (1178), 3 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states 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 17:34:44,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:44,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:34:44,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:45,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:45,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2022-11-25 17:34:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1970255, now seen corresponding path program 1 times [2022-11-25 17:34:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:45,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897618353] [2022-11-25 17:34:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:45,145 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 17:34:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:45,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:45,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:34:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:45,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:34:45,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:45,434 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 17:34:45,434 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 17:34:45,524 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 17:34:45,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:45,804 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 17:34:45,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897618353] [2022-11-25 17:34:45,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897618353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:34:45,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:34:45,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 17:34:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067625288] [2022-11-25 17:34:45,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:34:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:34:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:34:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:34:48,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 1003 [2022-11-25 17:34:48,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states 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 17:34:48,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:48,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 1003 [2022-11-25 17:34:48,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:07,240 INFO L130 PetriNetUnfolder]: 61710/86391 cut-off events. [2022-11-25 17:35:07,240 INFO L131 PetriNetUnfolder]: For 396/396 co-relation queries the response was YES. [2022-11-25 17:35:07,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173219 conditions, 86391 events. 61710/86391 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 9150. Compared 690991 event pairs, 57860 based on Foata normal form. 0/17451 useless extension candidates. Maximal degree in co-relation 173211. Up to 21579 conditions per place. [2022-11-25 17:35:07,648 INFO L137 encePairwiseOnDemand]: 986/1003 looper letters, 252 selfloop transitions, 39 changer transitions 0/293 dead transitions. [2022-11-25 17:35:07,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 293 transitions, 1282 flow [2022-11-25 17:35:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:35:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:35:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2523 transitions. [2022-11-25 17:35:07,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41924227318045865 [2022-11-25 17:35:07,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2523 transitions. [2022-11-25 17:35:07,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2523 transitions. [2022-11-25 17:35:07,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:07,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2523 transitions. [2022-11-25 17:35:07,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 420.5) internal successors, (2523), 6 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states 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 17:35:07,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1003.0) internal successors, (7021), 7 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states 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 17:35:07,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1003.0) internal successors, (7021), 7 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states 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 17:35:07,679 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 224 flow. Second operand 6 states and 2523 transitions. [2022-11-25 17:35:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 293 transitions, 1282 flow [2022-11-25 17:35:07,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 293 transitions, 1281 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:07,687 INFO L231 Difference]: Finished difference. Result has 86 places, 116 transitions, 512 flow [2022-11-25 17:35:07,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1003, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=116} [2022-11-25 17:35:07,689 INFO L288 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2022-11-25 17:35:07,689 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 116 transitions, 512 flow [2022-11-25 17:35:07,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states 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 17:35:07,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:07,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:35:07,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:35:07,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:35:07,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2022-11-25 17:35:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1897558372, now seen corresponding path program 1 times [2022-11-25 17:35:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:07,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144338553] [2022-11-25 17:35:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:07,904 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 17:35:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:07,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:35:07,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2425b6c-3360-4696-b696-4fa19f672545/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 17:35:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:08,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:35:08,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:08,073 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-25 17:35:08,094 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 17:35:08,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:08,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:08,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144338553] [2022-11-25 17:35:08,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144338553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:08,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:08,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:35:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615540335] [2022-11-25 17:35:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:08,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:08,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:35:08,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 1003 [2022-11-25 17:35:08,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 116 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 398.25) internal successors, (1593), 4 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states 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 17:35:08,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:08,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 1003 [2022-11-25 17:35:08,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand