./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:45:09,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:45:09,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:45:09,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:45:09,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:45:09,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:45:09,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:45:09,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:45:09,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:45:09,389 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:45:09,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:45:09,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:45:09,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:45:09,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:45:09,393 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:45:09,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:45:09,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:45:09,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:45:09,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:45:09,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:45:09,398 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:45:09,399 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:45:09,400 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:45:09,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:45:09,401 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:45:09,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:45:09,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:45:09,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:45:09,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:45:09,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:45:09,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:45:09,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:45:09,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:09,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:45:09,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:45:09,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:45:09,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:45:09,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:45:09,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:45:09,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:45:09,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:45:09,412 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_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-24 21:45:09,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:45:09,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:45:09,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:45:09,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:45:09,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:45:09,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-24 21:45:12,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:45:13,173 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:45:13,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-24 21:45:13,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/46a3aae7a/44fbd13c56df44b0a74cc50a2d616404/FLAGc4cc31de6 [2023-11-24 21:45:13,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/46a3aae7a/44fbd13c56df44b0a74cc50a2d616404 [2023-11-24 21:45:13,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:45:13,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:45:13,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:13,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:45:13,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:45:13,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:13" (1/1) ... [2023-11-24 21:45:13,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65176dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:13, skipping insertion in model container [2023-11-24 21:45:13,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:13" (1/1) ... [2023-11-24 21:45:13,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:45:13,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:13,526 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:45:13,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e8dd912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:13, skipping insertion in model container [2023-11-24 21:45:13,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:13,527 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:45:13,529 INFO L158 Benchmark]: Toolchain (without parser) took 319.99ms. Allocated memory is still 169.9MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:45:13,529 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:45:13,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.07ms. Allocated memory is still 169.9MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:45:13,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.07ms. Allocated memory is still 169.9MB. Free memory was 126.9MB in the beginning and 116.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:45:15,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:45:15,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:45:15,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:45:15,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:45:16,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:45:16,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:45:16,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:45:16,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:45:16,035 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:45:16,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:45:16,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:45:16,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:45:16,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:45:16,039 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:45:16,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:45:16,040 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:45:16,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:45:16,041 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:45:16,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:45:16,042 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:45:16,043 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:45:16,043 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:45:16,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:45:16,044 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:45:16,045 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:45:16,045 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:45:16,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:45:16,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:45:16,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:45:16,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:45:16,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:45:16,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:45:16,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:45:16,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:16,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:45:16,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:45:16,051 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:45:16,052 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:45:16,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:45:16,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:45:16,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:45:16,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:45:16,053 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:45:16,054 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_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-24 21:45:16,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:45:16,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:45:16,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:45:16,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:45:16,521 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:45:16,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-24 21:45:19,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:45:19,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:45:19,960 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-24 21:45:19,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/f1b0d4168/bcd664cde6fc43f1babe68068922e7db/FLAG592e66daf [2023-11-24 21:45:19,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/data/f1b0d4168/bcd664cde6fc43f1babe68068922e7db [2023-11-24 21:45:19,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:45:19,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:45:20,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:20,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:45:20,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:45:20,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:19" (1/1) ... [2023-11-24 21:45:20,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e21768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20, skipping insertion in model container [2023-11-24 21:45:20,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:19" (1/1) ... [2023-11-24 21:45:20,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:45:20,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:20,317 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:45:20,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:45:20,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:20,391 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:45:20,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:20,458 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:45:20,458 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:45:20,466 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:45:20,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20 WrapperNode [2023-11-24 21:45:20,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:20,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:20,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:45:20,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:45:20,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,541 INFO L138 Inliner]: procedures = 28, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 284 [2023-11-24 21:45:20,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:20,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:45:20,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:45:20,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:45:20,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,622 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 11, 2, 2, 2]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 2, 1, 1, 1]. [2023-11-24 21:45:20,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:45:20,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:45:20,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:45:20,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:45:20,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (1/1) ... [2023-11-24 21:45:20,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:20,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:20,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:45:20,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:45:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:45:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:45:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:45:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:45:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:45:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:45:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:45:20,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:45:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:45:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:45:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:45:20,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:45:20,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:45:20,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:45:20,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:45:20,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:45:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:45:20,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:45:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:45:20,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:45:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:45:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:45:20,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:45:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:45:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:45:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:45:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:45:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:45:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:45:20,828 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:45:21,021 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:45:21,025 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:45:21,903 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:45:22,414 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:45:22,414 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-24 21:45:22,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:22 BoogieIcfgContainer [2023-11-24 21:45:22,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:45:22,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:45:22,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:45:22,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:45:22,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:45:19" (1/3) ... [2023-11-24 21:45:22,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d692553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:22, skipping insertion in model container [2023-11-24 21:45:22,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:20" (2/3) ... [2023-11-24 21:45:22,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d692553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:22, skipping insertion in model container [2023-11-24 21:45:22,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:22" (3/3) ... [2023-11-24 21:45:22,428 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-11-24 21:45:22,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:45:22,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-24 21:45:22,452 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:45:22,575 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:45:22,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 219 flow [2023-11-24 21:45:22,695 INFO L124 PetriNetUnfolderBase]: 11/96 cut-off events. [2023-11-24 21:45:22,696 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:45:22,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 11/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 276 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-24 21:45:22,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 99 transitions, 219 flow [2023-11-24 21:45:22,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 95 transitions, 208 flow [2023-11-24 21:45:22,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:45:22,737 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;@3d25c1a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:45:22,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-24 21:45:22,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:45:22,745 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:45:22,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:45:22,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:22,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:45:22,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:22,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 894978, now seen corresponding path program 1 times [2023-11-24 21:45:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:22,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702912476] [2023-11-24 21:45:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:22,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:22,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:45:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:22,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:45:22,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:23,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:45:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:45:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:23,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:23,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:23,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:23,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:23,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:23,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:23,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702912476] [2023-11-24 21:45:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702912476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:23,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:45:23,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640147161] [2023-11-24 21:45:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:23,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:23,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:23,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:23,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:23,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:25,322 INFO L124 PetriNetUnfolderBase]: 4704/7866 cut-off events. [2023-11-24 21:45:25,323 INFO L125 PetriNetUnfolderBase]: For 365/366 co-relation queries the response was YES. [2023-11-24 21:45:25,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14583 conditions, 7866 events. 4704/7866 cut-off events. For 365/366 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55153 event pairs, 3616 based on Foata normal form. 544/5753 useless extension candidates. Maximal degree in co-relation 14373. Up to 6434 conditions per place. [2023-11-24 21:45:25,417 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 45 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-24 21:45:25,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 288 flow [2023-11-24 21:45:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-24 21:45:25,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632996632996633 [2023-11-24 21:45:25,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-24 21:45:25,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-24 21:45:25,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:25,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-24 21:45:25,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:25,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:25,451 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 208 flow. Second operand 3 states and 188 transitions. [2023-11-24 21:45:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 288 flow [2023-11-24 21:45:25,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 276 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:45:25,481 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 186 flow [2023-11-24 21:45:25,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-11-24 21:45:25,488 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -8 predicate places. [2023-11-24 21:45:25,489 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 186 flow [2023-11-24 21:45:25,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:25,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:25,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:45:25,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:25,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:25,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:25,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash 894979, now seen corresponding path program 1 times [2023-11-24 21:45:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:25,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509723950] [2023-11-24 21:45:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:25,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:25,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:25,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:25,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:45:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:25,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:45:25,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:25,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:45:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:25,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:45:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:26,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:26,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:26,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:26,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:26,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:26,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:26,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509723950] [2023-11-24 21:45:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509723950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:26,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223234252] [2023-11-24 21:45:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:26,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:26,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:26,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:26,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:26,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:28,359 INFO L124 PetriNetUnfolderBase]: 4706/7872 cut-off events. [2023-11-24 21:45:28,359 INFO L125 PetriNetUnfolderBase]: For 91/92 co-relation queries the response was YES. [2023-11-24 21:45:28,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14416 conditions, 7872 events. 4706/7872 cut-off events. For 91/92 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55150 event pairs, 3616 based on Foata normal form. 0/5213 useless extension candidates. Maximal degree in co-relation 14380. Up to 6443 conditions per place. [2023-11-24 21:45:28,450 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 48 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2023-11-24 21:45:28,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 94 transitions, 310 flow [2023-11-24 21:45:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:45:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-24 21:45:28,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2023-11-24 21:45:28,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-24 21:45:28,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-24 21:45:28,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:28,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-24 21:45:28,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:28,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:28,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:28,468 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 186 flow. Second operand 4 states and 237 transitions. [2023-11-24 21:45:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 94 transitions, 310 flow [2023-11-24 21:45:28,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:45:28,475 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 238 flow [2023-11-24 21:45:28,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2023-11-24 21:45:28,476 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2023-11-24 21:45:28,477 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 238 flow [2023-11-24 21:45:28,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:28,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:28,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 21:45:28,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 21:45:28,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:28,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:28,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 27744896, now seen corresponding path program 1 times [2023-11-24 21:45:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681270959] [2023-11-24 21:45:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:28,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:28,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:28,691 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:28,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:45:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:28,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:45:28,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:28,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:28,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681270959] [2023-11-24 21:45:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681270959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:45:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34100818] [2023-11-24 21:45:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:28,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 99 [2023-11-24 21:45:28,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:28,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:28,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 99 [2023-11-24 21:45:28,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:30,339 INFO L124 PetriNetUnfolderBase]: 4706/7877 cut-off events. [2023-11-24 21:45:30,339 INFO L125 PetriNetUnfolderBase]: For 92/93 co-relation queries the response was YES. [2023-11-24 21:45:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14451 conditions, 7877 events. 4706/7877 cut-off events. For 92/93 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55184 event pairs, 3616 based on Foata normal form. 1/5222 useless extension candidates. Maximal degree in co-relation 14391. Up to 6443 conditions per place. [2023-11-24 21:45:30,522 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 54 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-11-24 21:45:30,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 372 flow [2023-11-24 21:45:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:45:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-11-24 21:45:30,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085858585858586 [2023-11-24 21:45:30,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-11-24 21:45:30,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-11-24 21:45:30,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:30,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-11-24 21:45:30,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:30,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:30,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:30,531 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 238 flow. Second operand 4 states and 241 transitions. [2023-11-24 21:45:30,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 372 flow [2023-11-24 21:45:30,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:45:30,535 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 249 flow [2023-11-24 21:45:30,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2023-11-24 21:45:30,537 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-24 21:45:30,537 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 249 flow [2023-11-24 21:45:30,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:30,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:30,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:45:30,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-24 21:45:30,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:30,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:30,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash 860103937, now seen corresponding path program 1 times [2023-11-24 21:45:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:30,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123887238] [2023-11-24 21:45:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:30,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:30,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:30,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:30,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:45:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:30,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:45:30,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:30,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:45:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:30,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:30,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:30,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:30,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:30,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:30,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:31,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:45:31,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:31,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:31,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:31,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:45:31,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:31,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:31,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:31,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123887238] [2023-11-24 21:45:31,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123887238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:31,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:31,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:45:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466579857] [2023-11-24 21:45:31,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:45:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:45:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:45:33,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:33,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 249 flow. Second operand has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:33,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:33,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:33,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:36,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:45:38,162 INFO L124 PetriNetUnfolderBase]: 4712/7901 cut-off events. [2023-11-24 21:45:38,162 INFO L125 PetriNetUnfolderBase]: For 100/101 co-relation queries the response was YES. [2023-11-24 21:45:38,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14539 conditions, 7901 events. 4712/7901 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55331 event pairs, 3616 based on Foata normal form. 0/5243 useless extension candidates. Maximal degree in co-relation 14479. Up to 6450 conditions per place. [2023-11-24 21:45:38,242 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 48 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2023-11-24 21:45:38,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 479 flow [2023-11-24 21:45:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:45:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:45:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 529 transitions. [2023-11-24 21:45:38,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343434343434343 [2023-11-24 21:45:38,248 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 529 transitions. [2023-11-24 21:45:38,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 529 transitions. [2023-11-24 21:45:38,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:38,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 529 transitions. [2023-11-24 21:45:38,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.9) internal successors, (529), 10 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:38,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:38,256 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:38,256 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 249 flow. Second operand 10 states and 529 transitions. [2023-11-24 21:45:38,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 479 flow [2023-11-24 21:45:38,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 475 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:38,265 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 413 flow [2023-11-24 21:45:38,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2023-11-24 21:45:38,268 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2023-11-24 21:45:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 413 flow [2023-11-24 21:45:38,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:38,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:38,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:45:38,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-24 21:45:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:38,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:38,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash 893418818, now seen corresponding path program 1 times [2023-11-24 21:45:38,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:38,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013285226] [2023-11-24 21:45:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:38,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:38,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:38,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:45:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:38,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:45:38,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:38,762 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-24 21:45:38,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-24 21:45:38,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:38,857 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-24 21:45:38,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-24 21:45:39,183 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-11-24 21:45:39,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 75 [2023-11-24 21:45:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:45:39,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:39,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013285226] [2023-11-24 21:45:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013285226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:39,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:45:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762954062] [2023-11-24 21:45:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:39,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:39,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:39,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:39,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:39,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:39,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:41,275 INFO L124 PetriNetUnfolderBase]: 4712/7630 cut-off events. [2023-11-24 21:45:41,275 INFO L125 PetriNetUnfolderBase]: For 129/130 co-relation queries the response was YES. [2023-11-24 21:45:41,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14324 conditions, 7630 events. 4712/7630 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 50614 event pairs, 3616 based on Foata normal form. 730/5976 useless extension candidates. Maximal degree in co-relation 14238. Up to 6473 conditions per place. [2023-11-24 21:45:41,355 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-24 21:45:41,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 551 flow [2023-11-24 21:45:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-24 21:45:41,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-24 21:45:41,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-24 21:45:41,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-24 21:45:41,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:41,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-24 21:45:41,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:41,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:41,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:41,361 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 413 flow. Second operand 3 states and 184 transitions. [2023-11-24 21:45:41,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 551 flow [2023-11-24 21:45:41,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 479 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-24 21:45:41,368 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 339 flow [2023-11-24 21:45:41,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-24 21:45:41,371 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2023-11-24 21:45:41,372 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 339 flow [2023-11-24 21:45:41,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:41,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:41,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:45:41,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:41,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:41,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash 893418819, now seen corresponding path program 1 times [2023-11-24 21:45:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:41,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769284698] [2023-11-24 21:45:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:41,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:41,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:41,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:41,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:45:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:41,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:45:41,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:41,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:45:41,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-24 21:45:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:41,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:41,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:45:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:41,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:42,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:42,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:45:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:45:42,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:42,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769284698] [2023-11-24 21:45:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769284698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25959178] [2023-11-24 21:45:42,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:42,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:42,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:42,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:42,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:42,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:42,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:42,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:42,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:43,514 INFO L124 PetriNetUnfolderBase]: 4712/7359 cut-off events. [2023-11-24 21:45:43,514 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-24 21:45:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14007 conditions, 7359 events. 4712/7359 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 45942 event pairs, 3616 based on Foata normal form. 730/5975 useless extension candidates. Maximal degree in co-relation 13993. Up to 6473 conditions per place. [2023-11-24 21:45:43,578 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-24 21:45:43,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 108 transitions, 477 flow [2023-11-24 21:45:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-24 21:45:43,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-24 21:45:43,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-24 21:45:43,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-24 21:45:43,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:43,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-24 21:45:43,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:43,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:43,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:43,584 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 339 flow. Second operand 3 states and 184 transitions. [2023-11-24 21:45:43,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 108 transitions, 477 flow [2023-11-24 21:45:43,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:43,588 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 336 flow [2023-11-24 21:45:43,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-24 21:45:43,590 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-11-24 21:45:43,590 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 336 flow [2023-11-24 21:45:43,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:43,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:43,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:43,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:43,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:43,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:43,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash -71387461, now seen corresponding path program 1 times [2023-11-24 21:45:43,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:43,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607241780] [2023-11-24 21:45:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:43,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:43,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:43,799 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:43,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:45:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:43,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:45:43,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:44,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,054 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:45:44,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-24 21:45:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2023-11-24 21:45:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,157 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:45:44,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-24 21:45:44,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-24 21:45:44,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,253 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:45:44,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-24 21:45:44,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:45:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,341 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:45:44,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2023-11-24 21:45:44,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:44,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:45:44,452 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:45:44,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:45:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:45:44,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:44,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:44,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607241780] [2023-11-24 21:45:44,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607241780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:44,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:44,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:45:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646248681] [2023-11-24 21:45:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:44,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:44,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:44,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:44,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:44,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:45,510 INFO L124 PetriNetUnfolderBase]: 4712/7328 cut-off events. [2023-11-24 21:45:45,510 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-24 21:45:45,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13977 conditions, 7328 events. 4712/7328 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 45510 event pairs, 3616 based on Foata normal form. 69/5314 useless extension candidates. Maximal degree in co-relation 13962. Up to 6473 conditions per place. [2023-11-24 21:45:45,644 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-24 21:45:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 474 flow [2023-11-24 21:45:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-24 21:45:45,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-24 21:45:45,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-24 21:45:45,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-24 21:45:45,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:45,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-24 21:45:45,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:45,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:45,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:45,649 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 336 flow. Second operand 3 states and 184 transitions. [2023-11-24 21:45:45,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 474 flow [2023-11-24 21:45:45,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:45,654 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 333 flow [2023-11-24 21:45:45,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2023-11-24 21:45:45,655 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-11-24 21:45:45,655 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 333 flow [2023-11-24 21:45:45,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:45,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:45,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:45,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:45,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:45,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -71387460, now seen corresponding path program 1 times [2023-11-24 21:45:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17370373] [2023-11-24 21:45:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:45,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:45,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:45,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:45:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:46,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:45:46,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:46,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-24 21:45:46,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,171 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:46,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:45:46,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:45:46,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:46,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:46,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:46,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:45:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:45:46,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:46,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:46,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17370373] [2023-11-24 21:45:46,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17370373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:46,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:46,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:46,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915409091] [2023-11-24 21:45:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:46,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:46,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-24 21:45:46,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-24 21:45:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:47,851 INFO L124 PetriNetUnfolderBase]: 4712/7297 cut-off events. [2023-11-24 21:45:47,851 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-24 21:45:47,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 7297 events. 4712/7297 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44946 event pairs, 3616 based on Foata normal form. 69/5314 useless extension candidates. Maximal degree in co-relation 13931. Up to 6473 conditions per place. [2023-11-24 21:45:47,906 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-11-24 21:45:47,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 471 flow [2023-11-24 21:45:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-24 21:45:47,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-24 21:45:47,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-24 21:45:47,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-24 21:45:47,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:47,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-24 21:45:47,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:47,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:47,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:47,913 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 333 flow. Second operand 3 states and 184 transitions. [2023-11-24 21:45:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 471 flow [2023-11-24 21:45:47,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:47,918 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 330 flow [2023-11-24 21:45:47,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2023-11-24 21:45:47,921 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-11-24 21:45:47,921 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 330 flow [2023-11-24 21:45:47,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:47,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:47,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:48,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:48,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:48,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:48,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2081982445, now seen corresponding path program 1 times [2023-11-24 21:45:48,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:48,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237757594] [2023-11-24 21:45:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:48,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:48,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:48,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:45:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:48,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:45:48,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:48,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:45:48,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:45:48,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:45:48,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:48,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:45:48,559 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:45:48,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:45:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:45:48,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:48,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237757594] [2023-11-24 21:45:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237757594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:48,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323897043] [2023-11-24 21:45:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:48,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 99 [2023-11-24 21:45:48,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:48,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:48,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 99 [2023-11-24 21:45:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:50,196 INFO L124 PetriNetUnfolderBase]: 6304/9006 cut-off events. [2023-11-24 21:45:50,196 INFO L125 PetriNetUnfolderBase]: For 130/131 co-relation queries the response was YES. [2023-11-24 21:45:50,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17871 conditions, 9006 events. 6304/9006 cut-off events. For 130/131 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 46411 event pairs, 4968 based on Foata normal form. 0/6932 useless extension candidates. Maximal degree in co-relation 17854. Up to 8631 conditions per place. [2023-11-24 21:45:50,263 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 63 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2023-11-24 21:45:50,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 466 flow [2023-11-24 21:45:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:45:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:45:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2023-11-24 21:45:50,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767676767676768 [2023-11-24 21:45:50,266 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 236 transitions. [2023-11-24 21:45:50,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 236 transitions. [2023-11-24 21:45:50,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:50,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 236 transitions. [2023-11-24 21:45:50,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:50,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:50,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:50,270 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 330 flow. Second operand 5 states and 236 transitions. [2023-11-24 21:45:50,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 466 flow [2023-11-24 21:45:50,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:45:50,275 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 339 flow [2023-11-24 21:45:50,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-11-24 21:45:50,276 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-24 21:45:50,277 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 339 flow [2023-11-24 21:45:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:50,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:50,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:50,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:50,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:50,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-24 21:45:50,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:50,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2081982446, now seen corresponding path program 1 times [2023-11-24 21:45:50,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:45:50,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323399250] [2023-11-24 21:45:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:45:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:45:50,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:45:50,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd347c1-73d3-4f23-8728-79262c68a419/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:45:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:50,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 21:45:50,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:50,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:45:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:50,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:50,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:50,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:50,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:50,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:50,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:50,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:45:50,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:50,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:45:51,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:51,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:51,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:45:51,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:45:51,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:45:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:45:51,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 21:45:51,337 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:45:51,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 21:45:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:51,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:45:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:52,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:45:52,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323399250] [2023-11-24 21:45:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323399250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:45:52,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:45:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-24 21:45:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769537350] [2023-11-24 21:45:52,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:45:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:45:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:45:52,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:45:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:45:56,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 99 [2023-11-24 21:45:56,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 339 flow. Second operand has 12 states, 12 states have (on average 41.333333333333336) internal successors, (496), 12 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:56,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:56,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 99 [2023-11-24 21:45:56,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand