./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:27,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:27,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:49:27,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:27,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:27,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:27,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:27,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:27,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:27,238 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:27,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:27,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:27,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:27,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:27,243 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:27,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:27,244 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:49:27,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:27,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:49:27,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:27,246 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:49:27,247 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:49:27,248 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:49:27,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:27,249 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:49:27,249 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:49:27,250 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:49:27,250 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:27,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:27,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:27,253 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:27,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:27,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:27,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:27,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:27,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:49:27,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:49:27,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:27,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:27,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:27,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:27,257 INFO L153 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_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 [2023-11-24 21:49:27,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:27,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:27,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:27,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:27,650 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:27,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-24 21:49:30,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:31,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:31,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-24 21:49:31,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/25c63d74d/1c6a7723b26844f093edf4b9a66f440a/FLAG6b01c6783 [2023-11-24 21:49:31,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/25c63d74d/1c6a7723b26844f093edf4b9a66f440a [2023-11-24 21:49:31,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:31,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:31,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:31,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:31,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:31,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f5ac71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31, skipping insertion in model container [2023-11-24 21:49:31,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:31,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:31,826 ERROR L324 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) [2023-11-24 21:49:31,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@18998095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31, skipping insertion in model container [2023-11-24 21:49:31,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:31,828 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:49:31,830 INFO L158 Benchmark]: Toolchain (without parser) took 628.31ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 76.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:49:31,830 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:31,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 625.68ms. Allocated memory is still 144.7MB. Free memory was 97.3MB in the beginning and 77.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:49:31,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 625.68ms. Allocated memory is still 144.7MB. Free memory was 97.3MB in the beginning and 77.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: 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_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:34,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:34,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:49:34,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:34,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:34,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:34,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:34,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:34,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:34,606 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:34,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:34,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:34,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:34,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:34,611 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:34,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:34,612 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:49:34,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:34,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:49:34,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:34,615 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:49:34,615 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:49:34,616 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:49:34,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:34,617 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:49:34,617 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:49:34,618 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:49:34,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:49:34,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:49:34,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:34,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:34,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:34,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:34,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:34,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:34,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:34,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:34,625 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:49:34,625 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:49:34,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:34,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:34,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:34,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:34,627 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:49:34,628 INFO L153 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_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 [2023-11-24 21:49:35,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:35,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:35,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:35,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:35,076 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:35,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-24 21:49:38,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:38,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:38,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-24 21:49:38,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/3ec0fa3d8/42bf45e5ccdc443e8ffbb968aacc8ba7/FLAG7bae5b7bf [2023-11-24 21:49:38,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/data/3ec0fa3d8/42bf45e5ccdc443e8ffbb968aacc8ba7 [2023-11-24 21:49:38,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:38,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:38,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:38,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:38,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:38,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:38" (1/1) ... [2023-11-24 21:49:38,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8b2890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:38, skipping insertion in model container [2023-11-24 21:49:38,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:38" (1/1) ... [2023-11-24 21:49:38,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:39,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:39,635 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:49:39,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:39,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:39,751 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:49:39,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:39,893 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:49:39,893 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:49:39,901 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:49:39,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39 WrapperNode [2023-11-24 21:49:39,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:39,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:39,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:49:39,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:49:39,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:39,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,011 INFO L138 Inliner]: procedures = 252, calls = 64, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 160 [2023-11-24 21:49:40,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:40,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:49:40,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:49:40,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:49:40,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,086 INFO L175 MemorySlicer]: Split 25 memory accesses to 5 slices as follows [2, 2, 3, 3, 15]. 60 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 1, 1, 0]. The 12 writes are split as follows [0, 2, 1, 1, 8]. [2023-11-24 21:49:40,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:49:40,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:49:40,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:49:40,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:49:40,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (1/1) ... [2023-11-24 21:49:40,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:40,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:49:40,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:49:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:49:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:49:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:49:40,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:49:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:49:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-24 21:49:40,250 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-24 21:49:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:49:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:49:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:49:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:49:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:49:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:49:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:49:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:49:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:49:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:49:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:49:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:49:40,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:49:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-24 21:49:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-24 21:49:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-24 21:49:40,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-24 21:49:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-24 21:49:40,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:49:40,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:49:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:49:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 21:49:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:49:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:49:40,259 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:49:40,669 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:40,672 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:41,571 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:41,818 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:41,818 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:49:41,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:41 BoogieIcfgContainer [2023-11-24 21:49:41,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:41,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:41,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:41,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:41,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:49:38" (1/3) ... [2023-11-24 21:49:41,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c2529d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:41, skipping insertion in model container [2023-11-24 21:49:41,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:39" (2/3) ... [2023-11-24 21:49:41,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c2529d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:41, skipping insertion in model container [2023-11-24 21:49:41,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:41" (3/3) ... [2023-11-24 21:49:41,828 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-11-24 21:49:41,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:41,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-11-24 21:49:41,849 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:49:41,978 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:49:42,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 136 transitions, 286 flow [2023-11-24 21:49:42,131 INFO L124 PetriNetUnfolderBase]: 14/186 cut-off events. [2023-11-24 21:49:42,131 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:49:42,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 14/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 749 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-11-24 21:49:42,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 136 transitions, 286 flow [2023-11-24 21:49:42,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 134 transitions, 280 flow [2023-11-24 21:49:42,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:42,163 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;@177c49f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:42,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-24 21:49:42,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:49:42,167 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-24 21:49:42,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:49:42,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:42,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:49:42,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 586168, now seen corresponding path program 1 times [2023-11-24 21:49:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890264700] [2023-11-24 21:49:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:42,196 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 [2023-11-24 21:49:42,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:42,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:42,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:42,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:49:42,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:42,488 INFO L378 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 7 [2023-11-24 21:49:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:42,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:42,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:42,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890264700] [2023-11-24 21:49:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890264700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:42,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:42,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723547799] [2023-11-24 21:49:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:42,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 136 [2023-11-24 21:49:42,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-24 21:49:42,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:42,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 136 [2023-11-24 21:49:42,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:46,164 INFO L124 PetriNetUnfolderBase]: 9323/18960 cut-off events. [2023-11-24 21:49:46,165 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 21:49:46,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33520 conditions, 18960 events. 9323/18960 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 190951 event pairs, 559 based on Foata normal form. 792/11755 useless extension candidates. Maximal degree in co-relation 33203. Up to 13528 conditions per place. [2023-11-24 21:49:46,324 INFO L140 encePairwiseOnDemand]: 124/136 looper letters, 94 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-11-24 21:49:46,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 146 transitions, 496 flow [2023-11-24 21:49:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-24 21:49:46,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2023-11-24 21:49:46,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-24 21:49:46,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-24 21:49:46,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:46,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-24 21:49:46,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-11-24 21:49:46,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:46,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:46,357 INFO L175 Difference]: Start difference. First operand has 130 places, 134 transitions, 280 flow. Second operand 3 states and 262 transitions. [2023-11-24 21:49:46,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 146 transitions, 496 flow [2023-11-24 21:49:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 146 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:49:46,368 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 248 flow [2023-11-24 21:49:46,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2023-11-24 21:49:46,374 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-11-24 21:49:46,375 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 248 flow [2023-11-24 21:49:46,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-24 21:49:46,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:46,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:49:46,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:46,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:46,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:46,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 586169, now seen corresponding path program 1 times [2023-11-24 21:49:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347261805] [2023-11-24 21:49:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:46,586 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 [2023-11-24 21:49:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:46,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:46,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:46,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:49:46,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:46,798 INFO L378 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 [2023-11-24 21:49:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:46,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:46,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:46,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347261805] [2023-11-24 21:49:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347261805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:46,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368765361] [2023-11-24 21:49:46,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:46,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:47,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 136 [2023-11-24 21:49:47,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-24 21:49:47,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:47,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 136 [2023-11-24 21:49:47,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:50,035 INFO L124 PetriNetUnfolderBase]: 9323/18958 cut-off events. [2023-11-24 21:49:50,035 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2023-11-24 21:49:50,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33684 conditions, 18958 events. 9323/18958 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 190993 event pairs, 559 based on Foata normal form. 1/10962 useless extension candidates. Maximal degree in co-relation 2010. Up to 13528 conditions per place. [2023-11-24 21:49:50,144 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 93 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2023-11-24 21:49:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 144 transitions, 486 flow [2023-11-24 21:49:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-24 21:49:50,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2023-11-24 21:49:50,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-24 21:49:50,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-24 21:49:50,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:50,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-24 21:49:50,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-11-24 21:49:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:50,160 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 248 flow. Second operand 3 states and 256 transitions. [2023-11-24 21:49:50,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 144 transitions, 486 flow [2023-11-24 21:49:50,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 144 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:50,169 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 244 flow [2023-11-24 21:49:50,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2023-11-24 21:49:50,171 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -10 predicate places. [2023-11-24 21:49:50,171 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 244 flow [2023-11-24 21:49:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-24 21:49:50,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:50,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 21:49:50,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:50,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:50,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:50,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash 18169468, now seen corresponding path program 1 times [2023-11-24 21:49:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803598069] [2023-11-24 21:49:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:50,378 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 [2023-11-24 21:49:50,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:50,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:50,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:50,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:49:50,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:50,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:50,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803598069] [2023-11-24 21:49:50,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803598069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:50,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:50,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517942544] [2023-11-24 21:49:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:50,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 136 [2023-11-24 21:49:50,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-24 21:49:50,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:50,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 136 [2023-11-24 21:49:50,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:52,747 INFO L124 PetriNetUnfolderBase]: 9322/15311 cut-off events. [2023-11-24 21:49:52,748 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-24 21:49:52,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30037 conditions, 15311 events. 9322/15311 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 112988 event pairs, 8957 based on Foata normal form. 1/8712 useless extension candidates. Maximal degree in co-relation 17315. Up to 13949 conditions per place. [2023-11-24 21:49:52,833 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 93 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-11-24 21:49:52,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 143 transitions, 484 flow [2023-11-24 21:49:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-24 21:49:52,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2023-11-24 21:49:52,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-24 21:49:52,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-24 21:49:52,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:52,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-24 21:49:52,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2023-11-24 21:49:52,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:52,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:52,840 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 244 flow. Second operand 3 states and 258 transitions. [2023-11-24 21:49:52,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 143 transitions, 484 flow [2023-11-24 21:49:52,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:52,847 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 242 flow [2023-11-24 21:49:52,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2023-11-24 21:49:52,849 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -10 predicate places. [2023-11-24 21:49:52,850 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 242 flow [2023-11-24 21:49:52,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-24 21:49:52,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:52,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:49:52,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:53,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:53,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash 283259626, now seen corresponding path program 1 times [2023-11-24 21:49:53,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:53,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039645621] [2023-11-24 21:49:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:53,062 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 [2023-11-24 21:49:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:53,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:53,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:53,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:49:53,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:53,377 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:49:53,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:49:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:53,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:53,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039645621] [2023-11-24 21:49:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039645621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:49:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713006875] [2023-11-24 21:49:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:49:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:53,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:49:53,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:49:53,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 136 [2023-11-24 21:49:53,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-24 21:49:53,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:53,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 136 [2023-11-24 21:49:53,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:55,609 INFO L124 PetriNetUnfolderBase]: 9322/15574 cut-off events. [2023-11-24 21:49:55,609 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-11-24 21:49:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30307 conditions, 15574 events. 9322/15574 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 116290 event pairs, 8593 based on Foata normal form. 198/9216 useless extension candidates. Maximal degree in co-relation 28982. Up to 13381 conditions per place. [2023-11-24 21:49:55,708 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 99 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-11-24 21:49:55,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 148 transitions, 508 flow [2023-11-24 21:49:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:49:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:49:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-11-24 21:49:55,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6446078431372549 [2023-11-24 21:49:55,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-11-24 21:49:55,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-11-24 21:49:55,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:55,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-11-24 21:49:55,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-24 21:49:55,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:55,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:49:55,716 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 242 flow. Second operand 3 states and 263 transitions. [2023-11-24 21:49:55,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 148 transitions, 508 flow [2023-11-24 21:49:55,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:49:55,740 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 247 flow [2023-11-24 21:49:55,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-11-24 21:49:55,741 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -11 predicate places. [2023-11-24 21:49:55,742 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 247 flow [2023-11-24 21:49:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-24 21:49:55,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:55,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:49:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:55,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:55,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash 283259627, now seen corresponding path program 1 times [2023-11-24 21:49:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624358806] [2023-11-24 21:49:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:55,951 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 [2023-11-24 21:49:55,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:55,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:55,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:56,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:49:56,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:49:56,294 INFO L378 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 14 treesize of output 9 [2023-11-24 21:49:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:56,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:56,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624358806] [2023-11-24 21:49:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624358806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:56,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:49:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594702421] [2023-11-24 21:49:56,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:56,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:49:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:49:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:49:56,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-24 21:49:56,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2023-11-24 21:49:56,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:56,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-24 21:49:56,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:49:58,790 INFO L124 PetriNetUnfolderBase]: 9686/16129 cut-off events. [2023-11-24 21:49:58,790 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-24 21:49:58,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31625 conditions, 16129 events. 9686/16129 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 120596 event pairs, 8957 based on Foata normal form. 0/9410 useless extension candidates. Maximal degree in co-relation 28529. Up to 13943 conditions per place. [2023-11-24 21:49:58,857 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 101 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-11-24 21:49:58,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 146 transitions, 515 flow [2023-11-24 21:49:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:49:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:49:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-11-24 21:49:58,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2023-11-24 21:49:58,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-11-24 21:49:58,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-11-24 21:49:58,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:49:58,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-11-24 21:49:58,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-11-24 21:49:58,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:49:58,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:49:58,865 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 247 flow. Second operand 4 states and 302 transitions. [2023-11-24 21:49:58,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 146 transitions, 515 flow [2023-11-24 21:49:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 146 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:49:58,869 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 246 flow [2023-11-24 21:49:58,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2023-11-24 21:49:58,870 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -11 predicate places. [2023-11-24 21:49:58,871 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 246 flow [2023-11-24 21:49:58,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2023-11-24 21:49:58,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:49:58,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:49:58,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:59,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:59,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:49:59,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1629581395, now seen corresponding path program 1 times [2023-11-24 21:49:59,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:59,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237420566] [2023-11-24 21:49:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:59,074 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 [2023-11-24 21:49:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:59,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:49:59,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:49:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:49:59,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:49:59,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:49:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:49:59,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:49:59,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:49:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237420566] [2023-11-24 21:49:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237420566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:49:59,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:49:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:49:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118320583] [2023-11-24 21:49:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:49:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:49:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:49:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:49:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:49:59,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-24 21:49:59,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-11-24 21:49:59,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:49:59,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-24 21:49:59,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:00,919 INFO L124 PetriNetUnfolderBase]: 9321/16318 cut-off events. [2023-11-24 21:50:00,919 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2023-11-24 21:50:00,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31239 conditions, 16318 events. 9321/16318 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 130739 event pairs, 9321 based on Foata normal form. 1/9799 useless extension candidates. Maximal degree in co-relation 28138. Up to 14494 conditions per place. [2023-11-24 21:50:00,986 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 75 selfloop transitions, 3 changer transitions 1/123 dead transitions. [2023-11-24 21:50:00,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 426 flow [2023-11-24 21:50:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:50:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:50:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-11-24 21:50:00,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496323529411765 [2023-11-24 21:50:00,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-11-24 21:50:00,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-11-24 21:50:00,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:00,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-11-24 21:50:00,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-11-24 21:50:00,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:00,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:00,995 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 246 flow. Second operand 4 states and 299 transitions. [2023-11-24 21:50:00,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 426 flow [2023-11-24 21:50:01,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:01,030 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 266 flow [2023-11-24 21:50:01,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2023-11-24 21:50:01,031 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-11-24 21:50:01,031 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 266 flow [2023-11-24 21:50:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-11-24 21:50:01,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:01,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:01,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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)] Ended with exit code 0 [2023-11-24 21:50:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:01,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:01,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1022584457, now seen corresponding path program 1 times [2023-11-24 21:50:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970987690] [2023-11-24 21:50:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:01,238 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 [2023-11-24 21:50:01,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:01,239 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:01,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:01,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:50:01,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:01,433 INFO L378 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 7 [2023-11-24 21:50:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:01,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:01,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970987690] [2023-11-24 21:50:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970987690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016737711] [2023-11-24 21:50:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:01,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:01,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 136 [2023-11-24 21:50:01,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-24 21:50:01,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:01,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 136 [2023-11-24 21:50:01,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:03,451 INFO L124 PetriNetUnfolderBase]: 10049/16855 cut-off events. [2023-11-24 21:50:03,452 INFO L125 PetriNetUnfolderBase]: For 985/985 co-relation queries the response was YES. [2023-11-24 21:50:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33495 conditions, 16855 events. 10049/16855 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 128763 event pairs, 9321 based on Foata normal form. 0/10028 useless extension candidates. Maximal degree in co-relation 33445. Up to 14501 conditions per place. [2023-11-24 21:50:03,511 INFO L140 encePairwiseOnDemand]: 127/136 looper letters, 95 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2023-11-24 21:50:03,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 137 transitions, 510 flow [2023-11-24 21:50:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-24 21:50:03,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2023-11-24 21:50:03,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-24 21:50:03,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-24 21:50:03,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:03,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-24 21:50:03,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-24 21:50:03,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:50:03,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:50:03,516 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 266 flow. Second operand 3 states and 244 transitions. [2023-11-24 21:50:03,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 137 transitions, 510 flow [2023-11-24 21:50:03,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 137 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:50:03,527 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2023-11-24 21:50:03,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2023-11-24 21:50:03,528 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -12 predicate places. [2023-11-24 21:50:03,528 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2023-11-24 21:50:03,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-24 21:50:03,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:03,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:03,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:03,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:03,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:03,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1022581253, now seen corresponding path program 1 times [2023-11-24 21:50:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512416719] [2023-11-24 21:50:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:03,730 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 [2023-11-24 21:50:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:03,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:03,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:04,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:50:04,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:04,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:50:04,077 INFO L378 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 14 treesize of output 9 [2023-11-24 21:50:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:04,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:04,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:04,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512416719] [2023-11-24 21:50:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512416719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:04,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212402544] [2023-11-24 21:50:04,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:04,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:50:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:50:04,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:50:04,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-24 21:50:04,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-24 21:50:04,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:04,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-24 21:50:04,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:06,081 INFO L124 PetriNetUnfolderBase]: 9347/15756 cut-off events. [2023-11-24 21:50:06,081 INFO L125 PetriNetUnfolderBase]: For 1578/1578 co-relation queries the response was YES. [2023-11-24 21:50:06,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31526 conditions, 15756 events. 9347/15756 cut-off events. For 1578/1578 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 120709 event pairs, 8619 based on Foata normal form. 0/9249 useless extension candidates. Maximal degree in co-relation 28031. Up to 13420 conditions per place. [2023-11-24 21:50:06,180 INFO L140 encePairwiseOnDemand]: 129/136 looper letters, 102 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-11-24 21:50:06,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 139 transitions, 535 flow [2023-11-24 21:50:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:50:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:50:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-11-24 21:50:06,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-11-24 21:50:06,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-11-24 21:50:06,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-11-24 21:50:06,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:06,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-11-24 21:50:06,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-11-24 21:50:06,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:06,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:06,189 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 267 flow. Second operand 4 states and 304 transitions. [2023-11-24 21:50:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 139 transitions, 535 flow [2023-11-24 21:50:06,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:06,208 INFO L231 Difference]: Finished difference. Result has 115 places, 107 transitions, 255 flow [2023-11-24 21:50:06,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=115, PETRI_TRANSITIONS=107} [2023-11-24 21:50:06,209 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -15 predicate places. [2023-11-24 21:50:06,210 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 107 transitions, 255 flow [2023-11-24 21:50:06,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-24 21:50:06,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:06,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:06,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:06,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:06,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:06,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1022584456, now seen corresponding path program 1 times [2023-11-24 21:50:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902806680] [2023-11-24 21:50:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:06,413 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 [2023-11-24 21:50:06,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:06,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:06,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:06,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:50:06,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:06,588 INFO L378 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 [2023-11-24 21:50:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:06,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:06,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902806680] [2023-11-24 21:50:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902806680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722877009] [2023-11-24 21:50:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:06,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:06,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:06,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-24 21:50:06,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 107 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-24 21:50:06,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:06,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-24 21:50:06,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:08,689 INFO L124 PetriNetUnfolderBase]: 9321/15697 cut-off events. [2023-11-24 21:50:08,690 INFO L125 PetriNetUnfolderBase]: For 1577/1577 co-relation queries the response was YES. [2023-11-24 21:50:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31417 conditions, 15697 events. 9321/15697 cut-off events. For 1577/1577 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 123275 event pairs, 3107 based on Foata normal form. 394/9626 useless extension candidates. Maximal degree in co-relation 27917. Up to 9600 conditions per place. [2023-11-24 21:50:08,774 INFO L140 encePairwiseOnDemand]: 129/136 looper letters, 106 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-11-24 21:50:08,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 139 transitions, 539 flow [2023-11-24 21:50:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-24 21:50:08,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6348039215686274 [2023-11-24 21:50:08,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-24 21:50:08,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-24 21:50:08,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:08,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-24 21:50:08,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-11-24 21:50:08,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:50:08,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-24 21:50:08,779 INFO L175 Difference]: Start difference. First operand has 115 places, 107 transitions, 255 flow. Second operand 3 states and 259 transitions. [2023-11-24 21:50:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 139 transitions, 539 flow [2023-11-24 21:50:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 139 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:08,791 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 270 flow [2023-11-24 21:50:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2023-11-24 21:50:08,792 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -14 predicate places. [2023-11-24 21:50:08,793 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 270 flow [2023-11-24 21:50:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-24 21:50:08,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:08,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:08,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:50:08,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:08,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:08,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash 849192285, now seen corresponding path program 1 times [2023-11-24 21:50:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013735053] [2023-11-24 21:50:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:08,995 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 [2023-11-24 21:50:08,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:08,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:09,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (11)] Waiting until timeout for monitored process [2023-11-24 21:50:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:09,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 21:50:09,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:09,207 INFO L378 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 [2023-11-24 21:50:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:09,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:09,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013735053] [2023-11-24 21:50:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013735053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:09,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886698588] [2023-11-24 21:50:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:09,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:09,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-24 21:50:09,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-24 21:50:09,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:09,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-24 21:50:09,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:12,355 INFO L124 PetriNetUnfolderBase]: 8424/15097 cut-off events. [2023-11-24 21:50:12,355 INFO L125 PetriNetUnfolderBase]: For 1254/1254 co-relation queries the response was YES. [2023-11-24 21:50:12,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29814 conditions, 15097 events. 8424/15097 cut-off events. For 1254/1254 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 124831 event pairs, 983 based on Foata normal form. 0/9395 useless extension candidates. Maximal degree in co-relation 26750. Up to 8439 conditions per place. [2023-11-24 21:50:12,425 INFO L140 encePairwiseOnDemand]: 128/136 looper letters, 154 selfloop transitions, 9 changer transitions 1/199 dead transitions. [2023-11-24 21:50:12,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 799 flow [2023-11-24 21:50:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:50:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:50:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 554 transitions. [2023-11-24 21:50:12,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819327731092437 [2023-11-24 21:50:12,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 554 transitions. [2023-11-24 21:50:12,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 554 transitions. [2023-11-24 21:50:12,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:12,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 554 transitions. [2023-11-24 21:50:12,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 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) [2023-11-24 21:50:12,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 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) [2023-11-24 21:50:12,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 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) [2023-11-24 21:50:12,434 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 270 flow. Second operand 7 states and 554 transitions. [2023-11-24 21:50:12,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 799 flow [2023-11-24 21:50:12,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 199 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:12,480 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 313 flow [2023-11-24 21:50:12,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2023-11-24 21:50:12,481 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-11-24 21:50:12,482 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 313 flow [2023-11-24 21:50:12,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-24 21:50:12,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:12,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:12,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:50:12,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:12,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:12,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:12,684 INFO L85 PathProgramCache]: Analyzing trace with hash 849192284, now seen corresponding path program 1 times [2023-11-24 21:50:12,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:12,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128446666] [2023-11-24 21:50:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:12,686 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 [2023-11-24 21:50:12,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:12,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:12,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (12)] Waiting until timeout for monitored process [2023-11-24 21:50:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:12,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:50:12,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:12,875 INFO L378 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 7 [2023-11-24 21:50:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:12,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:12,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128446666] [2023-11-24 21:50:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128446666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149179239] [2023-11-24 21:50:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:13,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-24 21:50:13,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-24 21:50:13,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:13,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-24 21:50:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:15,469 INFO L124 PetriNetUnfolderBase]: 6646/11951 cut-off events. [2023-11-24 21:50:15,470 INFO L125 PetriNetUnfolderBase]: For 3531/3531 co-relation queries the response was YES. [2023-11-24 21:50:15,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25418 conditions, 11951 events. 6646/11951 cut-off events. For 3531/3531 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 94422 event pairs, 902 based on Foata normal form. 0/8685 useless extension candidates. Maximal degree in co-relation 7006. Up to 8172 conditions per place. [2023-11-24 21:50:15,519 INFO L140 encePairwiseOnDemand]: 124/136 looper letters, 175 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2023-11-24 21:50:15,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 224 transitions, 928 flow [2023-11-24 21:50:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:50:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:50:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-11-24 21:50:15,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5836397058823529 [2023-11-24 21:50:15,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-11-24 21:50:15,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-11-24 21:50:15,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:15,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-11-24 21:50:15,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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) [2023-11-24 21:50:15,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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) [2023-11-24 21:50:15,622 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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) [2023-11-24 21:50:15,622 INFO L175 Difference]: Start difference. First operand has 122 places, 111 transitions, 313 flow. Second operand 8 states and 635 transitions. [2023-11-24 21:50:15,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 224 transitions, 928 flow [2023-11-24 21:50:15,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 224 transitions, 921 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-24 21:50:15,650 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 400 flow [2023-11-24 21:50:15,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-11-24 21:50:15,652 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 3 predicate places. [2023-11-24 21:50:15,652 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 400 flow [2023-11-24 21:50:15,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-24 21:50:15,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:15,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:15,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:50:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:15,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:15,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1555357890, now seen corresponding path program 1 times [2023-11-24 21:50:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:15,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845941416] [2023-11-24 21:50:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:15,859 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 [2023-11-24 21:50:15,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:15,860 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:15,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (13)] Waiting until timeout for monitored process [2023-11-24 21:50:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:16,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:50:16,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:16,148 INFO L378 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 7 [2023-11-24 21:50:16,211 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:50:16,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:50:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:16,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:16,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845941416] [2023-11-24 21:50:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845941416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:50:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978237746] [2023-11-24 21:50:16,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:50:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:16,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:50:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:50:16,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 136 [2023-11-24 21:50:16,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-24 21:50:16,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:16,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 136 [2023-11-24 21:50:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:17,840 INFO L124 PetriNetUnfolderBase]: 5918/10112 cut-off events. [2023-11-24 21:50:17,840 INFO L125 PetriNetUnfolderBase]: For 7979/7979 co-relation queries the response was YES. [2023-11-24 21:50:17,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 10112 events. 5918/10112 cut-off events. For 7979/7979 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 73168 event pairs, 2531 based on Foata normal form. 0/7678 useless extension candidates. Maximal degree in co-relation 22958. Up to 4820 conditions per place. [2023-11-24 21:50:17,892 INFO L140 encePairwiseOnDemand]: 127/136 looper letters, 108 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2023-11-24 21:50:17,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 149 transitions, 710 flow [2023-11-24 21:50:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:50:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:50:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2023-11-24 21:50:17,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514705882352942 [2023-11-24 21:50:17,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2023-11-24 21:50:17,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2023-11-24 21:50:17,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:17,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2023-11-24 21:50:17,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2023-11-24 21:50:17,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:17,901 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:17,901 INFO L175 Difference]: Start difference. First operand has 133 places, 116 transitions, 400 flow. Second operand 4 states and 300 transitions. [2023-11-24 21:50:17,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 149 transitions, 710 flow [2023-11-24 21:50:17,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:50:17,918 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 397 flow [2023-11-24 21:50:17,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=397, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2023-11-24 21:50:17,920 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -2 predicate places. [2023-11-24 21:50:17,920 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 397 flow [2023-11-24 21:50:17,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-24 21:50:17,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:17,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:17,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:50:18,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:18,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:18,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:18,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1555357889, now seen corresponding path program 1 times [2023-11-24 21:50:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:18,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400190632] [2023-11-24 21:50:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:18,129 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 [2023-11-24 21:50:18,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:18,130 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:18,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (14)] Waiting until timeout for monitored process [2023-11-24 21:50:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:18,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:50:18,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:18,400 INFO L378 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 [2023-11-24 21:50:18,406 INFO L378 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 7 [2023-11-24 21:50:18,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:50:18,546 INFO L378 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 14 treesize of output 9 [2023-11-24 21:50:18,561 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:50:18,561 INFO L378 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 13 treesize of output 13 [2023-11-24 21:50:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:18,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:18,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:18,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400190632] [2023-11-24 21:50:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400190632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:18,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:50:18,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111790501] [2023-11-24 21:50:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:18,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:50:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:50:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:50:19,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 136 [2023-11-24 21:50:19,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2023-11-24 21:50:19,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:19,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 136 [2023-11-24 21:50:19,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:20,371 INFO L124 PetriNetUnfolderBase]: 4382/7789 cut-off events. [2023-11-24 21:50:20,371 INFO L125 PetriNetUnfolderBase]: For 6207/6207 co-relation queries the response was YES. [2023-11-24 21:50:20,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19087 conditions, 7789 events. 4382/7789 cut-off events. For 6207/6207 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56343 event pairs, 1987 based on Foata normal form. 0/6310 useless extension candidates. Maximal degree in co-relation 17617. Up to 3072 conditions per place. [2023-11-24 21:50:20,412 INFO L140 encePairwiseOnDemand]: 128/136 looper letters, 116 selfloop transitions, 7 changer transitions 0/151 dead transitions. [2023-11-24 21:50:20,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 151 transitions, 731 flow [2023-11-24 21:50:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:50:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:50:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-11-24 21:50:20,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349264705882353 [2023-11-24 21:50:20,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-11-24 21:50:20,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-11-24 21:50:20,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:20,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-11-24 21:50:20,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2023-11-24 21:50:20,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:20,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-24 21:50:20,418 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 397 flow. Second operand 4 states and 291 transitions. [2023-11-24 21:50:20,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 151 transitions, 731 flow [2023-11-24 21:50:20,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 151 transitions, 713 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:50:20,444 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 385 flow [2023-11-24 21:50:20,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2023-11-24 21:50:20,445 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -6 predicate places. [2023-11-24 21:50:20,445 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 385 flow [2023-11-24 21:50:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2023-11-24 21:50:20,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:20,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:20,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:50:20,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 21:50:20,661 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-24 21:50:20,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:20,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1552720178, now seen corresponding path program 1 times [2023-11-24 21:50:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:50:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602415264] [2023-11-24 21:50:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:20,662 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 [2023-11-24 21:50:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:50:20,668 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 21:50:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6108a34b-423d-40bc-91c8-3544d371c396/bin/uautomizer-verify-NlZe1sFDwI/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 (15)] Waiting until timeout for monitored process [2023-11-24 21:50:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:20,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:50:20,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:50:20,867 INFO L378 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 7 [2023-11-24 21:50:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:20,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:50:20,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:50:20,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602415264] [2023-11-24 21:50:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602415264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:20,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437651156] [2023-11-24 21:50:20,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:50:20,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:21,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-24 21:50:21,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-24 21:50:21,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:21,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-24 21:50:21,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand