./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:03:38,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:03:38,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:03:38,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:03:38,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:03:38,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:03:38,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:03:38,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:03:38,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:03:38,254 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:03:38,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:03:38,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:03:38,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:03:38,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:03:38,259 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:03:38,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:03:38,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:03:38,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:03:38,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:03:38,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:03:38,263 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:03:38,265 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:03:38,265 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:03:38,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:03:38,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:03:38,267 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:03:38,267 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:03:38,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:03:38,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:03:38,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:03:38,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:03:38,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:03:38,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:38,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:03:38,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:03:38,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:03:38,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:03:38,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:03:38,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:03:38,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:03:38,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:03:38,274 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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 [2023-11-24 22:03:38,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:03:38,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:03:38,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:03:38,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:03:38,642 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:03:38,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-24 22:03:41,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:03:42,189 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:03:42,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-24 22:03:42,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/08ed0d22f/dd25dfaa2f6d43c692dd6bdd16fb58e2/FLAG102ac5fad [2023-11-24 22:03:42,228 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/08ed0d22f/dd25dfaa2f6d43c692dd6bdd16fb58e2 [2023-11-24 22:03:42,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:03:42,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:03:42,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:42,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:03:42,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:03:42,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:42" (1/1) ... [2023-11-24 22:03:42,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162537b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:42, skipping insertion in model container [2023-11-24 22:03:42,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:42" (1/1) ... [2023-11-24 22:03:42,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:42,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:42,636 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 22:03:42,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23eac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:42, skipping insertion in model container [2023-11-24 22:03:42,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:42,638 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 22:03:42,640 INFO L158 Benchmark]: Toolchain (without parser) took 401.13ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 113.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:03:42,640 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:03:42,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.76ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 113.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:03:42,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.76ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 113.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:03:45,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:03:45,490 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 22:03:45,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:03:45,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:03:45,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:03:45,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:03:45,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:03:45,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:03:45,559 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:03:45,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:03:45,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:03:45,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:03:45,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:03:45,563 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:03:45,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:03:45,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:03:45,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:03:45,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:03:45,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:03:45,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:03:45,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:03:45,566 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:03:45,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:03:45,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:03:45,568 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:03:45,568 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:03:45,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:03:45,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:03:45,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:03:45,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:03:45,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:03:45,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:03:45,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:03:45,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:45,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:03:45,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:03:45,574 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 22:03:45,574 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:03:45,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:03:45,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:03:45,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:03:45,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:03:45,576 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 22:03:45,577 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_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecd7c8e693c00e4ad1aa87421fd475cfc129d605eef5f310568fee0c97eadf4 [2023-11-24 22:03:45,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:03:46,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:03:46,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:03:46,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:03:46,022 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:03:46,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-24 22:03:49,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:03:49,389 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:03:49,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-24 22:03:49,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/752d56155/b0666acf493c43b4b37e0a760642646a/FLAG000c95e27 [2023-11-24 22:03:49,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/data/752d56155/b0666acf493c43b4b37e0a760642646a [2023-11-24 22:03:49,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:03:49,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:03:49,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:49,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:03:49,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:03:49,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:49,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6498216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49, skipping insertion in model container [2023-11-24 22:03:49,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:49,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:49,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:49,754 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 22:03:49,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:49,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:49,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:03:49,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:49,926 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:03:49,931 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:03:49,939 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:03:49,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49 WrapperNode [2023-11-24 22:03:49,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:49,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:49,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:03:49,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:03:49,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:49,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,045 INFO L138 Inliner]: procedures = 30, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 404 [2023-11-24 22:03:50,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:50,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:03:50,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:03:50,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:03:50,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,152 INFO L175 MemorySlicer]: Split 30 memory accesses to 7 slices as follows [2, 16, 3, 2, 2, 2, 3]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 4, 1, 1, 1, 1, 1]. [2023-11-24 22:03:50,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:03:50,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:03:50,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:03:50,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:03:50,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (1/1) ... [2023-11-24 22:03:50,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:50,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:03:50,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:03:50,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:03:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:03:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 22:03:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 22:03:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 22:03:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 22:03:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-24 22:03:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-11-24 22:03:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-11-24 22:03:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 22:03:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 22:03:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 22:03:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 22:03:50,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 22:03:50,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-24 22:03:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-11-24 22:03:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 22:03:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 22:03:50,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 22:03:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 22:03:50,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 22:03:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-24 22:03:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-24 22:03:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:03:50,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 22:03:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 22:03:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 22:03:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 22:03:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 22:03:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-24 22:03:50,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2023-11-24 22:03:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 22:03:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 22:03:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 22:03:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 22:03:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-24 22:03:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-24 22:03:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-24 22:03:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:03:50,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:03:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:03:50,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:03:50,364 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 22:03:50,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 22:03:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:03:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:03:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:03:50,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:03:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:03:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-11-24 22:03:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-11-24 22:03:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-11-24 22:03:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-11-24 22:03:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-11-24 22:03:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-11-24 22:03:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-11-24 22:03:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:03:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 22:03:50,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 22:03:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 22:03:50,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 22:03:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 22:03:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-24 22:03:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6 [2023-11-24 22:03:50,373 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 22:03:50,621 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:03:50,623 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:03:51,918 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:03:52,699 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:03:52,700 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-24 22:03:52,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:52 BoogieIcfgContainer [2023-11-24 22:03:52,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:03:52,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:03:52,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:03:52,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:03:52,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:03:49" (1/3) ... [2023-11-24 22:03:52,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bf08cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:52, skipping insertion in model container [2023-11-24 22:03:52,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:49" (2/3) ... [2023-11-24 22:03:52,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bf08cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:52, skipping insertion in model container [2023-11-24 22:03:52,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:52" (3/3) ... [2023-11-24 22:03:52,710 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-11-24 22:03:52,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:03:52,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-24 22:03:52,733 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:03:52,919 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 22:03:52,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 126 transitions, 273 flow [2023-11-24 22:03:53,037 INFO L124 PetriNetUnfolderBase]: 10/123 cut-off events. [2023-11-24 22:03:53,037 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 22:03:53,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 10/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 383 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-24 22:03:53,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 126 transitions, 273 flow [2023-11-24 22:03:53,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 122 transitions, 262 flow [2023-11-24 22:03:53,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:03:53,071 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;@738d25d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:03:53,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2023-11-24 22:03:53,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:03:53,077 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 22:03:53,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:03:53,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:03:53,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:03:53,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:03:53,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1299845, now seen corresponding path program 1 times [2023-11-24 22:03:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:03:53,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237615535] [2023-11-24 22:03:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:53,101 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 22:03:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:03:53,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:53,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:03:53,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:03:53,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 22:03:53,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 22:03:53,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 22:03:53,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 22:03:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:53,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 22:03:53,889 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 22:03:53,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:03:53,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:03:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237615535] [2023-11-24 22:03:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237615535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:53,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:53,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:03:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538961383] [2023-11-24 22:03:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:03:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:03:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:03:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:03:54,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 126 [2023-11-24 22:03:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 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 22:03:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:03:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 126 [2023-11-24 22:03:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:03:57,512 INFO L124 PetriNetUnfolderBase]: 5704/12958 cut-off events. [2023-11-24 22:03:57,512 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-11-24 22:03:57,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20973 conditions, 12958 events. 5704/12958 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 141337 event pairs, 4106 based on Foata normal form. 1/6646 useless extension candidates. Maximal degree in co-relation 20061. Up to 7676 conditions per place. [2023-11-24 22:03:57,656 INFO L140 encePairwiseOnDemand]: 113/126 looper letters, 52 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-11-24 22:03:57,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 354 flow [2023-11-24 22:03:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:03:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:03:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-11-24 22:03:57,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2023-11-24 22:03:57,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-11-24 22:03:57,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-11-24 22:03:57,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:03:57,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-11-24 22:03:57,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 22:03:57,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 22:03:57,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 22:03:57,686 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 262 flow. Second operand 3 states and 245 transitions. [2023-11-24 22:03:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 354 flow [2023-11-24 22:03:57,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 112 transitions, 342 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 22:03:57,702 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 238 flow [2023-11-24 22:03:57,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-11-24 22:03:57,707 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -14 predicate places. [2023-11-24 22:03:57,707 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 238 flow [2023-11-24 22:03:57,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 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 22:03:57,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:03:57,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:03:57,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:57,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:03:57,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1299846, now seen corresponding path program 1 times [2023-11-24 22:03:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:03:57,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311555842] [2023-11-24 22:03:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:57,914 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 22:03:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:03:57,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:57,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:03:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 22:03:58,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:03:58,116 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 8 treesize of output 7 [2023-11-24 22:03:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:03:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 22:03:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:03:58,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:03:58,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:03:58,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:03:58,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:03:58,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:03:58,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:03:58,611 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 22:03:58,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:03:58,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:03:58,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311555842] [2023-11-24 22:03:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311555842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:58,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:03:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547250355] [2023-11-24 22:03:58,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:03:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:03:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:03:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:03:59,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 126 [2023-11-24 22:03:59,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 22:03:59,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:03:59,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 126 [2023-11-24 22:03:59,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:02,291 INFO L124 PetriNetUnfolderBase]: 5708/12970 cut-off events. [2023-11-24 22:04:02,292 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-24 22:04:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20803 conditions, 12970 events. 5708/12970 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 141343 event pairs, 4106 based on Foata normal form. 0/6654 useless extension candidates. Maximal degree in co-relation 20730. Up to 7694 conditions per place. [2023-11-24 22:04:02,494 INFO L140 encePairwiseOnDemand]: 108/126 looper letters, 58 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2023-11-24 22:04:02,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 410 flow [2023-11-24 22:04:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:04:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-11-24 22:04:02,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2023-11-24 22:04:02,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-11-24 22:04:02,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-11-24 22:04:02,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:02,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-11-24 22:04:02,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 22:04:02,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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 22:04:02,512 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 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 22:04:02,512 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 238 flow. Second operand 4 states and 316 transitions. [2023-11-24 22:04:02,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 410 flow [2023-11-24 22:04:02,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:02,519 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 342 flow [2023-11-24 22:04:02,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2023-11-24 22:04:02,520 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -10 predicate places. [2023-11-24 22:04:02,521 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 342 flow [2023-11-24 22:04:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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 22:04:02,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:02,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 22:04:02,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:02,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:04:02,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:02,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1249196786, now seen corresponding path program 1 times [2023-11-24 22:04:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125175575] [2023-11-24 22:04:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:02,734 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 22:04:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:02,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 22:04:02,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:02,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 22:04:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:02,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:02,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:02,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:02,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:03,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:04:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 22:04:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:04:03,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:04:03,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:04:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:03,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:03,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 22:04:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 22:04:03,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:03,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 22:04:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:03,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:04,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:04,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125175575] [2023-11-24 22:04:04,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125175575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:04,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:04,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 22:04:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032268838] [2023-11-24 22:04:04,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:04,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:04:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:04,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:04:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:04:05,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 126 [2023-11-24 22:04:05,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 342 flow. Second operand has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 22:04:05,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:05,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 126 [2023-11-24 22:04:05,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:13,202 INFO L124 PetriNetUnfolderBase]: 5720/13006 cut-off events. [2023-11-24 22:04:13,202 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-24 22:04:13,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20957 conditions, 13006 events. 5720/13006 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 141758 event pairs, 4106 based on Foata normal form. 0/6686 useless extension candidates. Maximal degree in co-relation 20756. Up to 7700 conditions per place. [2023-11-24 22:04:13,323 INFO L140 encePairwiseOnDemand]: 108/126 looper letters, 58 selfloop transitions, 50 changer transitions 0/160 dead transitions. [2023-11-24 22:04:13,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 160 transitions, 714 flow [2023-11-24 22:04:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:04:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:04:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 720 transitions. [2023-11-24 22:04:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-11-24 22:04:13,329 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 720 transitions. [2023-11-24 22:04:13,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 720 transitions. [2023-11-24 22:04:13,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:13,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 720 transitions. [2023-11-24 22:04:13,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.0) internal successors, (720), 10 states have internal predecessors, (720), 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 22:04:13,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 126.0) internal successors, (1386), 11 states have internal predecessors, (1386), 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 22:04:13,339 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 126.0) internal successors, (1386), 11 states have internal predecessors, (1386), 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 22:04:13,339 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 342 flow. Second operand 10 states and 720 transitions. [2023-11-24 22:04:13,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 160 transitions, 714 flow [2023-11-24 22:04:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 160 transitions, 714 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:04:13,346 INFO L231 Difference]: Finished difference. Result has 124 places, 160 transitions, 666 flow [2023-11-24 22:04:13,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=666, PETRI_PLACES=124, PETRI_TRANSITIONS=160} [2023-11-24 22:04:13,348 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 2 predicate places. [2023-11-24 22:04:13,348 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 160 transitions, 666 flow [2023-11-24 22:04:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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 22:04:13,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:13,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 22:04:13,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:13,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:04:13,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 72595464, now seen corresponding path program 1 times [2023-11-24 22:04:13,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815360557] [2023-11-24 22:04:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:13,553 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 22:04:13,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:13,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:13,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:13,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:04:13,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:13,721 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 22:04:13,730 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 22:04:13,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:13,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815360557] [2023-11-24 22:04:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815360557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:04:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414140399] [2023-11-24 22:04:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:04:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:04:13,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:04:13,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 126 [2023-11-24 22:04:13,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 160 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 22:04:13,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:13,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 126 [2023-11-24 22:04:13,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:15,963 INFO L124 PetriNetUnfolderBase]: 5720/13005 cut-off events. [2023-11-24 22:04:15,963 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-24 22:04:16,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21040 conditions, 13005 events. 5720/13005 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 141686 event pairs, 4106 based on Foata normal form. 0/6696 useless extension candidates. Maximal degree in co-relation 20925. Up to 7729 conditions per place. [2023-11-24 22:04:16,108 INFO L140 encePairwiseOnDemand]: 123/126 looper letters, 98 selfloop transitions, 6 changer transitions 0/159 dead transitions. [2023-11-24 22:04:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 159 transitions, 872 flow [2023-11-24 22:04:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:04:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:04:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-24 22:04:16,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2023-11-24 22:04:16,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-24 22:04:16,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-24 22:04:16,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:16,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-24 22:04:16,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 22:04:16,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 22:04:16,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 22:04:16,116 INFO L175 Difference]: Start difference. First operand has 124 places, 160 transitions, 666 flow. Second operand 3 states and 246 transitions. [2023-11-24 22:04:16,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 159 transitions, 872 flow [2023-11-24 22:04:16,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 159 transitions, 744 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-11-24 22:04:16,130 INFO L231 Difference]: Finished difference. Result has 121 places, 159 transitions, 548 flow [2023-11-24 22:04:16,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=121, PETRI_TRANSITIONS=159} [2023-11-24 22:04:16,133 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2023-11-24 22:04:16,133 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 159 transitions, 548 flow [2023-11-24 22:04:16,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 22:04:16,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:16,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 22:04:16,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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)] Ended with exit code 0 [2023-11-24 22:04:16,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:16,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:04:16,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash 72595465, now seen corresponding path program 1 times [2023-11-24 22:04:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299843916] [2023-11-24 22:04:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:16,338 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 22:04:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:16,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:16,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 22:04:16,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:16,525 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 22:04:16,588 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 22:04:16,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:16,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:16,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299843916] [2023-11-24 22:04:16,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299843916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:16,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:16,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:04:16,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758998050] [2023-11-24 22:04:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:16,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:17,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 126 [2023-11-24 22:04:17,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 159 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 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 22:04:17,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:04:17,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 126 [2023-11-24 22:04:17,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:04:19,434 INFO L124 PetriNetUnfolderBase]: 5721/13008 cut-off events. [2023-11-24 22:04:19,434 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-24 22:04:19,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20991 conditions, 13008 events. 5721/13008 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 141773 event pairs, 4106 based on Foata normal form. 0/6698 useless extension candidates. Maximal degree in co-relation 20892. Up to 7722 conditions per place. [2023-11-24 22:04:19,540 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 95 selfloop transitions, 13 changer transitions 0/162 dead transitions. [2023-11-24 22:04:19,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 162 transitions, 772 flow [2023-11-24 22:04:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:04:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 22:04:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-11-24 22:04:19,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968253968253968 [2023-11-24 22:04:19,543 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-11-24 22:04:19,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-11-24 22:04:19,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:04:19,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-11-24 22:04:19,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 22:04:19,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 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 22:04:19,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 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 22:04:19,549 INFO L175 Difference]: Start difference. First operand has 121 places, 159 transitions, 548 flow. Second operand 5 states and 376 transitions. [2023-11-24 22:04:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 162 transitions, 772 flow [2023-11-24 22:04:19,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 162 transitions, 758 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:04:19,555 INFO L231 Difference]: Finished difference. Result has 125 places, 162 transitions, 585 flow [2023-11-24 22:04:19,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=125, PETRI_TRANSITIONS=162} [2023-11-24 22:04:19,558 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2023-11-24 22:04:19,559 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 162 transitions, 585 flow [2023-11-24 22:04:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 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 22:04:19,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:04:19,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:19,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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)] Ended with exit code 0 [2023-11-24 22:04:19,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:19,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-24 22:04:19,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:19,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2044506543, now seen corresponding path program 1 times [2023-11-24 22:04:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004798308] [2023-11-24 22:04:19,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:19,766 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 22:04:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:19,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:19,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c956210-d9ed-4ef3-a11a-f13c6ad9361d/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 22:04:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:20,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 22:04:20,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:20,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,196 INFO L349 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-24 22:04:20,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-24 22:04:20,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,278 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 22:04:20,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-24 22:04:20,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,320 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 15 treesize of output 18 [2023-11-24 22:04:20,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,380 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 22:04:20,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-24 22:04:20,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,440 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 22:04:20,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-24 22:04:20,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,477 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 15 treesize of output 18 [2023-11-24 22:04:20,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:20,849 INFO L349 Elim1Store]: treesize reduction 96, result has 40.0 percent of original size [2023-11-24 22:04:20,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 67 treesize of output 124 [2023-11-24 22:04:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:27,759 WARN L293 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 1011 DAG size of output: 192 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-24 22:04:27,760 INFO L349 Elim1Store]: treesize reduction 1768, result has 16.8 percent of original size [2023-11-24 22:04:27,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 187 case distinctions, treesize of input 256 treesize of output 562