./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:43,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:43,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:55:43,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:43,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:43,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:43,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:43,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:43,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:43,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:43,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:43,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:43,914 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:43,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:43,918 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:43,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:55:43,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:43,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:43,920 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:55:43,921 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:55:43,921 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:55:43,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:43,923 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:55:43,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:55:43,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:43,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:43,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:43,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:43,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:43,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:43,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:43,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:43,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:55:43,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:55:43,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:43,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:43,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:43,934 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:43,934 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_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2023-11-06 21:55:44,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:44,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:44,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:44,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:44,379 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:44,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:55:48,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:48,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:48,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:55:48,490 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/e5aff8c67/8d60f438cc134e16bbfe8dbf5ab0d8f3/FLAG5211d9bbb [2023-11-06 21:55:48,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/e5aff8c67/8d60f438cc134e16bbfe8dbf5ab0d8f3 [2023-11-06 21:55:48,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:48,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:48,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:48,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:48,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:48,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:48" (1/1) ... [2023-11-06 21:55:48,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5d0dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:48, skipping insertion in model container [2023-11-06 21:55:48,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:48" (1/1) ... [2023-11-06 21:55:48,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:48,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:48,826 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 21:55:48,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12e55417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:48, skipping insertion in model container [2023-11-06 21:55:48,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:48,828 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:55:48,831 INFO L158 Benchmark]: Toolchain (without parser) took 308.81ms. Allocated memory is still 192.9MB. Free memory was 147.9MB in the beginning and 137.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:55:48,831 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 192.9MB. Free memory is still 170.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:55:48,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.77ms. Allocated memory is still 192.9MB. Free memory was 147.9MB in the beginning and 137.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:55:48,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 192.9MB. Free memory is still 170.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.77ms. Allocated memory is still 192.9MB. Free memory was 147.9MB in the beginning and 137.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:55:51,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:55:51,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 21:55:51,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:55:51,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:55:51,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:55:51,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:55:51,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:55:51,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:55:51,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:55:51,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:55:51,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:55:51,615 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:55:51,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:55:51,618 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:55:51,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:55:51,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:55:51,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:55:51,620 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:55:51,621 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:55:51,621 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:55:51,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:55:51,622 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:55:51,623 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:55:51,623 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:55:51,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:55:51,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:55:51,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:55:51,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:55:51,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:55:51,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:55:51,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:51,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:55:51,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:55:51,629 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:55:51,630 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:55:51,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:55:51,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:55:51,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:55:51,632 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:55:51,632 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:55:51,633 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_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2023-11-06 21:55:52,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:55:52,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:55:52,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:55:52,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:55:52,162 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:55:52,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:55:55,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:55,607 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:55,608 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:55:55,619 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/decee09ac/d7c467cc7c1e463a8b8a7dd9f7575e53/FLAG3ea8475a5 [2023-11-06 21:55:55,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/data/decee09ac/d7c467cc7c1e463a8b8a7dd9f7575e53 [2023-11-06 21:55:55,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:55,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:55,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:55,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:55,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:55,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:55" (1/1) ... [2023-11-06 21:55:55,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8784cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:55, skipping insertion in model container [2023-11-06 21:55:55,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:55" (1/1) ... [2023-11-06 21:55:55,711 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:56,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:56,058 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:55:56,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:56,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:56,101 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:56,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:56,165 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:56,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56 WrapperNode [2023-11-06 21:55:56,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:56,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:56,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:56,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:56,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,239 INFO L138 Inliner]: procedures = 29, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 420 [2023-11-06 21:55:56,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:56,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:56,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:56,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:56,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:56,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:56,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:56,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:56,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (1/1) ... [2023-11-06 21:55:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:56,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:56,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:56,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 21:55:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:55:56,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:55:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:55:56,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:55:56,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:55:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:55:56,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:55:56,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:55:56,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:55:56,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:55:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:56,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 21:55:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:55:56,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:55:56,424 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:55:56,576 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:56,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:58,005 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:58,018 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:58,019 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 21:55:58,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:58 BoogieIcfgContainer [2023-11-06 21:55:58,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:58,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:58,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:58,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:58,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:55" (1/3) ... [2023-11-06 21:55:58,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57298651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:58, skipping insertion in model container [2023-11-06 21:55:58,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:56" (2/3) ... [2023-11-06 21:55:58,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57298651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:58, skipping insertion in model container [2023-11-06 21:55:58,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:58" (3/3) ... [2023-11-06 21:55:58,032 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-11-06 21:55:58,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:58,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-06 21:55:58,056 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:55:58,276 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:55:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 582 places, 613 transitions, 1247 flow [2023-11-06 21:55:58,710 INFO L124 PetriNetUnfolderBase]: 41/610 cut-off events. [2023-11-06 21:55:58,711 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:55:58,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 610 events. 41/610 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 505. Up to 2 conditions per place. [2023-11-06 21:55:58,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 582 places, 613 transitions, 1247 flow [2023-11-06 21:55:58,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 574 places, 605 transitions, 1228 flow [2023-11-06 21:55:58,754 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:55:58,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 574 places, 605 transitions, 1228 flow [2023-11-06 21:55:58,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 574 places, 605 transitions, 1228 flow [2023-11-06 21:55:58,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 574 places, 605 transitions, 1228 flow [2023-11-06 21:55:59,027 INFO L124 PetriNetUnfolderBase]: 41/605 cut-off events. [2023-11-06 21:55:59,028 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:55:59,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 605 events. 41/605 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1042 event pairs, 0 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 505. Up to 2 conditions per place. [2023-11-06 21:55:59,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 32370 [2023-11-06 21:57:55,982 WARN L293 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 138 DAG size of output: 137 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:58:06,323 WARN L293 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 159 DAG size of output: 155 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:58:07,044 INFO L134 LiptonReduction]: Checked pairs total: 56170 [2023-11-06 21:58:07,045 INFO L136 LiptonReduction]: Total number of compositions: 739 [2023-11-06 21:58:07,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:07,093 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;@19cc62b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:07,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-06 21:58:07,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:07,098 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 21:58:07,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:07,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:07,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:58:07,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:07,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 75637, now seen corresponding path program 1 times [2023-11-06 21:58:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070163335] [2023-11-06 21:58:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:07,158 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 [2023-11-06 21:58:07,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:07,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:07,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:07,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:58:07,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:07,538 INFO L351 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 [2023-11-06 21:58:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,563 INFO L351 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 [2023-11-06 21:58:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,609 INFO L351 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 [2023-11-06 21:58:07,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,646 INFO L351 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 [2023-11-06 21:58:07,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,665 INFO L351 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 [2023-11-06 21:58:07,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,695 INFO L351 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 [2023-11-06 21:58:07,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,715 INFO L351 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 [2023-11-06 21:58:07,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,728 INFO L351 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 [2023-11-06 21:58:07,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,767 INFO L351 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 [2023-11-06 21:58:07,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,788 INFO L351 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 [2023-11-06 21:58:07,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,799 INFO L351 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 [2023-11-06 21:58:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,810 INFO L351 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 [2023-11-06 21:58:07,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,827 INFO L351 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 [2023-11-06 21:58:07,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,835 INFO L351 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 [2023-11-06 21:58:07,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,846 INFO L351 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 [2023-11-06 21:58:07,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,860 INFO L351 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 [2023-11-06 21:58:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,877 INFO L351 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 [2023-11-06 21:58:07,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,900 INFO L351 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 [2023-11-06 21:58:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,919 INFO L351 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 [2023-11-06 21:58:07,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,941 INFO L351 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 [2023-11-06 21:58:07,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,955 INFO L351 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 [2023-11-06 21:58:07,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,964 INFO L351 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 [2023-11-06 21:58:07,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,977 INFO L351 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 [2023-11-06 21:58:07,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:07,989 INFO L351 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 [2023-11-06 21:58:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:08,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:08,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:08,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070163335] [2023-11-06 21:58:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070163335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:08,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:08,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:58:08,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217165456] [2023-11-06 21:58:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:09,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 553 out of 1352 [2023-11-06 21:58:09,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 3 states have internal predecessors, (1661), 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) [2023-11-06 21:58:09,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:09,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 553 of 1352 [2023-11-06 21:58:09,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:17,633 INFO L124 PetriNetUnfolderBase]: 28358/39563 cut-off events. [2023-11-06 21:58:17,633 INFO L125 PetriNetUnfolderBase]: For 597/597 co-relation queries the response was YES. [2023-11-06 21:58:17,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79762 conditions, 39563 events. 28358/39563 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 1997. Compared 243924 event pairs, 26445 based on Foata normal form. 0/12077 useless extension candidates. Maximal degree in co-relation 76220. Up to 39428 conditions per place. [2023-11-06 21:58:17,966 INFO L140 encePairwiseOnDemand]: 1337/1352 looper letters, 93 selfloop transitions, 7 changer transitions 0/106 dead transitions. [2023-11-06 21:58:17,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 106 transitions, 430 flow [2023-11-06 21:58:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1767 transitions. [2023-11-06 21:58:17,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356508875739645 [2023-11-06 21:58:17,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1767 transitions. [2023-11-06 21:58:17,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1767 transitions. [2023-11-06 21:58:17,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:18,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1767 transitions. [2023-11-06 21:58:18,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 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) [2023-11-06 21:58:18,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:18,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:18,033 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 222 flow. Second operand 3 states and 1767 transitions. [2023-11-06 21:58:18,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 106 transitions, 430 flow [2023-11-06 21:58:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 418 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:58:18,050 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 258 flow [2023-11-06 21:58:18,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2023-11-06 21:58:18,056 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -7 predicate places. [2023-11-06 21:58:18,057 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 258 flow [2023-11-06 21:58:18,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.6666666666666) internal successors, (1661), 3 states have internal predecessors, (1661), 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) [2023-11-06 21:58:18,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:18,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:58:18,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:18,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:18,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:18,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 75636, now seen corresponding path program 1 times [2023-11-06 21:58:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540593257] [2023-11-06 21:58:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:18,273 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 [2023-11-06 21:58:18,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:18,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:18,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:58:18,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:18,390 INFO L351 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 16 treesize of output 7 [2023-11-06 21:58:18,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,404 INFO L351 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 [2023-11-06 21:58:18,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,415 INFO L351 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 [2023-11-06 21:58:18,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,420 INFO L351 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 [2023-11-06 21:58:18,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,428 INFO L351 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 [2023-11-06 21:58:18,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,436 INFO L351 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 [2023-11-06 21:58:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,445 INFO L351 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 [2023-11-06 21:58:18,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,454 INFO L351 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 [2023-11-06 21:58:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,473 INFO L351 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 [2023-11-06 21:58:18,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,482 INFO L351 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 [2023-11-06 21:58:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,493 INFO L351 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 [2023-11-06 21:58:18,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,499 INFO L351 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 [2023-11-06 21:58:18,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,536 INFO L351 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 [2023-11-06 21:58:18,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,556 INFO L351 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 [2023-11-06 21:58:18,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,576 INFO L351 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 [2023-11-06 21:58:18,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,586 INFO L351 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 [2023-11-06 21:58:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,599 INFO L351 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 [2023-11-06 21:58:18,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,617 INFO L351 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 [2023-11-06 21:58:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,631 INFO L351 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 [2023-11-06 21:58:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,649 INFO L351 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 [2023-11-06 21:58:18,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,657 INFO L351 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 [2023-11-06 21:58:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,667 INFO L351 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 [2023-11-06 21:58:18,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,674 INFO L351 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 [2023-11-06 21:58:18,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:18,684 INFO L351 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 [2023-11-06 21:58:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:18,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:18,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:18,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540593257] [2023-11-06 21:58:18,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540593257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:58:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661087831] [2023-11-06 21:58:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:19,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 559 out of 1352 [2023-11-06 21:58:19,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 559.6666666666666) internal successors, (1679), 3 states have internal predecessors, (1679), 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) [2023-11-06 21:58:19,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:19,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 559 of 1352 [2023-11-06 21:58:19,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:25,942 INFO L124 PetriNetUnfolderBase]: 28358/39557 cut-off events. [2023-11-06 21:58:25,942 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-06 21:58:25,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79320 conditions, 39557 events. 28358/39557 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 2039. Compared 243979 event pairs, 26445 based on Foata normal form. 6/12087 useless extension candidates. Maximal degree in co-relation 79261. Up to 39416 conditions per place. [2023-11-06 21:58:26,184 INFO L140 encePairwiseOnDemand]: 1347/1352 looper letters, 91 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-11-06 21:58:26,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 440 flow [2023-11-06 21:58:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1768 transitions. [2023-11-06 21:58:26,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-11-06 21:58:26,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1768 transitions. [2023-11-06 21:58:26,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1768 transitions. [2023-11-06 21:58:26,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:26,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1768 transitions. [2023-11-06 21:58:26,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 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) [2023-11-06 21:58:26,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:26,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:26,218 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 258 flow. Second operand 3 states and 1768 transitions. [2023-11-06 21:58:26,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 440 flow [2023-11-06 21:58:26,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:26,224 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 244 flow [2023-11-06 21:58:26,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2023-11-06 21:58:26,226 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -10 predicate places. [2023-11-06 21:58:26,226 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 244 flow [2023-11-06 21:58:26,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 559.6666666666666) internal successors, (1679), 3 states have internal predecessors, (1679), 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) [2023-11-06 21:58:26,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:26,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:58:26,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:26,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:26,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:26,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2353393, now seen corresponding path program 1 times [2023-11-06 21:58:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:26,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069055296] [2023-11-06 21:58:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:26,441 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 [2023-11-06 21:58:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:26,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:26,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:26,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:26,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:26,642 INFO L351 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 [2023-11-06 21:58:26,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,659 INFO L351 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 [2023-11-06 21:58:26,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,677 INFO L351 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 [2023-11-06 21:58:26,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,701 INFO L351 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 [2023-11-06 21:58:26,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,713 INFO L351 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 [2023-11-06 21:58:26,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,729 INFO L351 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 [2023-11-06 21:58:26,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,754 INFO L351 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 [2023-11-06 21:58:26,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,778 INFO L351 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 [2023-11-06 21:58:26,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,793 INFO L351 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 [2023-11-06 21:58:26,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,807 INFO L351 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 [2023-11-06 21:58:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,820 INFO L351 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 [2023-11-06 21:58:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,833 INFO L351 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 [2023-11-06 21:58:26,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,869 INFO L351 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 [2023-11-06 21:58:26,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,912 INFO L351 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 [2023-11-06 21:58:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,928 INFO L351 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 [2023-11-06 21:58:26,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,954 INFO L351 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 [2023-11-06 21:58:26,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,971 INFO L351 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 [2023-11-06 21:58:26,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:26,994 INFO L351 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 [2023-11-06 21:58:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,007 INFO L351 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 [2023-11-06 21:58:27,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,020 INFO L351 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 [2023-11-06 21:58:27,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,036 INFO L351 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 [2023-11-06 21:58:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,061 INFO L351 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 [2023-11-06 21:58:27,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,071 INFO L351 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 [2023-11-06 21:58:27,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:27,084 INFO L351 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 [2023-11-06 21:58:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:27,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:27,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069055296] [2023-11-06 21:58:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069055296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:27,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 21:58:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25965494] [2023-11-06 21:58:27,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:30,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 1352 [2023-11-06 21:58:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 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) [2023-11-06 21:58:30,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:30,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 1352 [2023-11-06 21:58:30,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:40,654 INFO L124 PetriNetUnfolderBase]: 28367/39575 cut-off events. [2023-11-06 21:58:40,654 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-06 21:58:40,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79373 conditions, 39575 events. 28367/39575 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 2072. Compared 244281 event pairs, 26445 based on Foata normal form. 0/12091 useless extension candidates. Maximal degree in co-relation 79261. Up to 39428 conditions per place. [2023-11-06 21:58:40,914 INFO L140 encePairwiseOnDemand]: 1342/1352 looper letters, 87 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2023-11-06 21:58:40,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 118 transitions, 546 flow [2023-11-06 21:58:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3349 transitions. [2023-11-06 21:58:40,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41284516765285995 [2023-11-06 21:58:40,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3349 transitions. [2023-11-06 21:58:40,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3349 transitions. [2023-11-06 21:58:40,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:40,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3349 transitions. [2023-11-06 21:58:40,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 558.1666666666666) internal successors, (3349), 6 states have internal predecessors, (3349), 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) [2023-11-06 21:58:40,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1352.0) internal successors, (9464), 7 states have internal predecessors, (9464), 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) [2023-11-06 21:58:40,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1352.0) internal successors, (9464), 7 states have internal predecessors, (9464), 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) [2023-11-06 21:58:40,981 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 244 flow. Second operand 6 states and 3349 transitions. [2023-11-06 21:58:40,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 118 transitions, 546 flow [2023-11-06 21:58:40,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:40,991 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 413 flow [2023-11-06 21:58:40,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2023-11-06 21:58:40,993 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-06 21:58:40,994 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 413 flow [2023-11-06 21:58:40,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 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) [2023-11-06 21:58:40,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:40,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:58:41,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:41,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:41,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:41,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2030274387, now seen corresponding path program 1 times [2023-11-06 21:58:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:41,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651887892] [2023-11-06 21:58:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:41,214 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 [2023-11-06 21:58:41,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:41,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:41,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:41,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:58:41,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:41,430 INFO L351 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 1 [2023-11-06 21:58:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:41,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:41,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651887892] [2023-11-06 21:58:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651887892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844148143] [2023-11-06 21:58:41,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:58:42,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 1352 [2023-11-06 21:58:42,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 552.25) internal successors, (2209), 4 states have internal predecessors, (2209), 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) [2023-11-06 21:58:42,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:42,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 1352 [2023-11-06 21:58:42,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:50,088 INFO L124 PetriNetUnfolderBase]: 28368/39578 cut-off events. [2023-11-06 21:58:50,088 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-06 21:58:50,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79432 conditions, 39578 events. 28368/39578 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 244203 event pairs, 26445 based on Foata normal form. 0/12099 useless extension candidates. Maximal degree in co-relation 79338. Up to 39444 conditions per place. [2023-11-06 21:58:50,332 INFO L140 encePairwiseOnDemand]: 1347/1352 looper letters, 107 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2023-11-06 21:58:50,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 649 flow [2023-11-06 21:58:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:58:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2296 transitions. [2023-11-06 21:58:50,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245562130177515 [2023-11-06 21:58:50,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2296 transitions. [2023-11-06 21:58:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2296 transitions. [2023-11-06 21:58:50,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:50,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2296 transitions. [2023-11-06 21:58:50,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 574.0) internal successors, (2296), 4 states have internal predecessors, (2296), 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) [2023-11-06 21:58:50,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1352.0) internal successors, (6760), 5 states have internal predecessors, (6760), 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) [2023-11-06 21:58:50,371 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1352.0) internal successors, (6760), 5 states have internal predecessors, (6760), 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) [2023-11-06 21:58:50,371 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 413 flow. Second operand 4 states and 2296 transitions. [2023-11-06 21:58:50,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 649 flow [2023-11-06 21:58:50,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 612 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:50,393 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 409 flow [2023-11-06 21:58:50,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2023-11-06 21:58:50,395 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -1 predicate places. [2023-11-06 21:58:50,395 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 409 flow [2023-11-06 21:58:50,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 552.25) internal successors, (2209), 4 states have internal predecessors, (2209), 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) [2023-11-06 21:58:50,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:50,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:58:50,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:50,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:50,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2030274388, now seen corresponding path program 1 times [2023-11-06 21:58:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970922985] [2023-11-06 21:58:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:50,612 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 [2023-11-06 21:58:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:50,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:50,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:58:50,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:50,739 INFO L351 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 [2023-11-06 21:58:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:50,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:50,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:50,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970922985] [2023-11-06 21:58:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970922985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:50,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:50,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621674627] [2023-11-06 21:58:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:51,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 559 out of 1352 [2023-11-06 21:58:51,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 3 states have internal predecessors, (1682), 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) [2023-11-06 21:58:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 559 of 1352 [2023-11-06 21:58:51,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:58,808 INFO L124 PetriNetUnfolderBase]: 28368/39574 cut-off events. [2023-11-06 21:58:58,809 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-06 21:58:58,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79418 conditions, 39574 events. 28368/39574 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 244149 event pairs, 26445 based on Foata normal form. 2/12105 useless extension candidates. Maximal degree in co-relation 79331. Up to 39432 conditions per place. [2023-11-06 21:58:59,030 INFO L140 encePairwiseOnDemand]: 1345/1352 looper letters, 103 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-11-06 21:58:59,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 625 flow [2023-11-06 21:58:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1765 transitions. [2023-11-06 21:58:59,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43515779092702167 [2023-11-06 21:58:59,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1765 transitions. [2023-11-06 21:58:59,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1765 transitions. [2023-11-06 21:58:59,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:59,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1765 transitions. [2023-11-06 21:58:59,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 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) [2023-11-06 21:58:59,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:59,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:58:59,061 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 409 flow. Second operand 3 states and 1765 transitions. [2023-11-06 21:58:59,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 625 flow [2023-11-06 21:58:59,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 117 transitions, 614 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:59,067 INFO L231 Difference]: Finished difference. Result has 99 places, 117 transitions, 408 flow [2023-11-06 21:58:59,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=99, PETRI_TRANSITIONS=117} [2023-11-06 21:58:59,069 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-06 21:58:59,069 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 117 transitions, 408 flow [2023-11-06 21:58:59,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 560.6666666666666) internal successors, (1682), 3 states have internal predecessors, (1682), 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) [2023-11-06 21:58:59,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:59,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:58:59,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:59,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:58:59,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1486013021, now seen corresponding path program 1 times [2023-11-06 21:58:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:58:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766843682] [2023-11-06 21:58:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:59,298 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 [2023-11-06 21:58:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:58:59,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:58:59,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:58:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:59,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:58:59,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:59,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:59,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:58:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766843682] [2023-11-06 21:58:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766843682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:59,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:59,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410944260] [2023-11-06 21:58:59,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:59,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:58:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:59,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 557 out of 1352 [2023-11-06 21:58:59,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 117 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 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) [2023-11-06 21:58:59,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:59,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 557 of 1352 [2023-11-06 21:58:59,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:07,186 INFO L124 PetriNetUnfolderBase]: 28367/39573 cut-off events. [2023-11-06 21:59:07,186 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-06 21:59:07,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79419 conditions, 39573 events. 28367/39573 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 243809 event pairs, 26445 based on Foata normal form. 1/12105 useless extension candidates. Maximal degree in co-relation 79330. Up to 39445 conditions per place. [2023-11-06 21:59:07,402 INFO L140 encePairwiseOnDemand]: 1349/1352 looper letters, 108 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-06 21:59:07,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 624 flow [2023-11-06 21:59:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1758 transitions. [2023-11-06 21:59:07,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334319526627219 [2023-11-06 21:59:07,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1758 transitions. [2023-11-06 21:59:07,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1758 transitions. [2023-11-06 21:59:07,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:07,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1758 transitions. [2023-11-06 21:59:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 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) [2023-11-06 21:59:07,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:59:07,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1352.0) internal successors, (5408), 4 states have internal predecessors, (5408), 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) [2023-11-06 21:59:07,430 INFO L175 Difference]: Start difference. First operand has 99 places, 117 transitions, 408 flow. Second operand 3 states and 1758 transitions. [2023-11-06 21:59:07,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 624 flow [2023-11-06 21:59:07,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:07,436 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 392 flow [2023-11-06 21:59:07,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1352, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2023-11-06 21:59:07,437 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -4 predicate places. [2023-11-06 21:59:07,438 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 392 flow [2023-11-06 21:59:07,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 559.0) internal successors, (1677), 3 states have internal predecessors, (1677), 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) [2023-11-06 21:59:07,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:07,439 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 21:59:07,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:59:07,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-06 21:59:07,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1399039605, now seen corresponding path program 2 times [2023-11-06 21:59:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:59:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169530070] [2023-11-06 21:59:07,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:07,653 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 [2023-11-06 21:59:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:59:07,655 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:59:07,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e4ec950-8c2d-403f-a4ab-98cd7fc31d3c/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 21:59:07,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:59:07,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:07,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:59:07,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:07,855 INFO L351 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 [2023-11-06 21:59:07,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,876 INFO L351 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 [2023-11-06 21:59:07,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,897 INFO L351 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 [2023-11-06 21:59:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,912 INFO L351 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 [2023-11-06 21:59:07,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,928 INFO L351 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 [2023-11-06 21:59:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,937 INFO L351 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 [2023-11-06 21:59:07,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,950 INFO L351 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 [2023-11-06 21:59:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,965 INFO L351 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 [2023-11-06 21:59:07,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,977 INFO L351 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 [2023-11-06 21:59:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:07,993 INFO L351 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 [2023-11-06 21:59:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,195 INFO L351 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 [2023-11-06 21:59:08,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,225 INFO L351 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 [2023-11-06 21:59:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,278 INFO L351 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 [2023-11-06 21:59:08,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,318 INFO L351 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 [2023-11-06 21:59:08,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,350 INFO L351 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 [2023-11-06 21:59:08,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,366 INFO L351 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 [2023-11-06 21:59:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,388 INFO L351 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 [2023-11-06 21:59:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,418 INFO L351 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 [2023-11-06 21:59:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,438 INFO L351 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 [2023-11-06 21:59:08,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,450 INFO L351 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 [2023-11-06 21:59:08,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,463 INFO L351 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 [2023-11-06 21:59:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,479 INFO L351 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 [2023-11-06 21:59:08,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,510 INFO L351 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 [2023-11-06 21:59:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:08,527 INFO L351 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 [2023-11-06 21:59:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:08,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:09,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:59:09,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169530070] [2023-11-06 21:59:09,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169530070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:09,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:59:09,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 21:59:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610557153] [2023-11-06 21:59:09,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:09,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:59:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:59:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:59:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:59:25,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 1352 [2023-11-06 21:59:25,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 542.0) internal successors, (6504), 12 states have internal predecessors, (6504), 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) [2023-11-06 21:59:25,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:25,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 1352 [2023-11-06 21:59:25,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:30,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:59:32,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:59:34,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:59:36,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:59:39,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []