./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:13,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:13,416 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:08:13,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:13,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:13,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:13,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:13,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:13,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:13,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:13,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:13,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:13,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:13,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:13,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:13,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:13,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:13,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:13,460 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:08:13,461 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:08:13,461 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:08:13,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:13,469 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:08:13,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:08:13,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:13,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:13,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:13,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:13,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:13,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:13,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:13,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:13,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:08:13,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:08:13,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:13,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:13,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:13,484 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:13,484 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_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2023-11-06 22:08:13,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:13,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:13,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:13,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:13,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:13,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 22:08:17,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:17,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:17,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 22:08:17,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/a9f29a0c7/ac706203e99c463391563704b84278b5/FLAG9b46d1329 [2023-11-06 22:08:17,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/a9f29a0c7/ac706203e99c463391563704b84278b5 [2023-11-06 22:08:17,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:17,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:17,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:17,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:17,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:17,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:17" (1/1) ... [2023-11-06 22:08:17,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691ab502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:17, skipping insertion in model container [2023-11-06 22:08:17,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:17" (1/1) ... [2023-11-06 22:08:17,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:17,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:17,667 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 22:08:17,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fc96a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:17, skipping insertion in model container [2023-11-06 22:08:17,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:17,669 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:08:17,671 INFO L158 Benchmark]: Toolchain (without parser) took 367.84ms. Allocated memory is still 151.0MB. Free memory was 105.5MB in the beginning and 95.6MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:08:17,671 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 151.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:08:17,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.65ms. Allocated memory is still 151.0MB. Free memory was 105.0MB in the beginning and 95.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:08:17,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 151.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.65ms. Allocated memory is still 151.0MB. Free memory was 105.0MB in the beginning and 95.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 99]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:08:20,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:08:20,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:08:20,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:08:20,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:08:20,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:08:20,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:08:20,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:08:20,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:08:20,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:08:20,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:08:20,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:08:20,636 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:08:20,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:08:20,637 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:08:20,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:08:20,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:08:20,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:08:20,640 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:08:20,641 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:08:20,642 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:08:20,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:08:20,643 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:08:20,644 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:08:20,644 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:08:20,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:08:20,645 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:08:20,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:08:20,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:08:20,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:08:20,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:08:20,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:20,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:08:20,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:08:20,650 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:08:20,650 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:08:20,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:08:20,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:08:20,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:08:20,653 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:08:20,653 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:08:20,654 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_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2023-11-06 22:08:21,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:08:21,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:08:21,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:08:21,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:08:21,175 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:08:21,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 22:08:24,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:08:24,663 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:08:24,663 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 22:08:24,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/b47cfdfe3/161023a922364e0b8889607ca9dda0f4/FLAG517f0386a [2023-11-06 22:08:24,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/data/b47cfdfe3/161023a922364e0b8889607ca9dda0f4 [2023-11-06 22:08:24,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:08:24,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:08:24,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:24,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:08:24,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:08:24,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:24" (1/1) ... [2023-11-06 22:08:24,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd69288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:24, skipping insertion in model container [2023-11-06 22:08:24,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:24" (1/1) ... [2023-11-06 22:08:24,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:24,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:24,966 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:08:24,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:08:24,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:24,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:08:25,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:08:25,047 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:08:25,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25 WrapperNode [2023-11-06 22:08:25,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:08:25,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:25,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:08:25,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:08:25,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,102 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-11-06 22:08:25,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:08:25,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:08:25,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:08:25,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:08:25,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:08:25,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:08:25,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:08:25,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:08:25,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (1/1) ... [2023-11-06 22:08:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:08:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:08:25,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:08:25,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:08:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:08:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:08:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:08:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:08:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:08:25,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:08:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:08:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:08:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:08:25,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:08:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:08:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:08:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:08:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:08:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:08:25,241 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:08:25,380 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:08:25,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:08:26,045 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:08:26,060 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:08:26,061 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:08:26,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:26 BoogieIcfgContainer [2023-11-06 22:08:26,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:08:26,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:08:26,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:08:26,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:08:26,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:24" (1/3) ... [2023-11-06 22:08:26,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5d928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:26, skipping insertion in model container [2023-11-06 22:08:26,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:25" (2/3) ... [2023-11-06 22:08:26,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5d928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:26, skipping insertion in model container [2023-11-06 22:08:26,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:26" (3/3) ... [2023-11-06 22:08:26,079 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-11-06 22:08:26,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:08:26,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-06 22:08:26,104 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:08:26,274 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:08:26,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 395 flow [2023-11-06 22:08:26,468 INFO L124 PetriNetUnfolderBase]: 12/184 cut-off events. [2023-11-06 22:08:26,471 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:08:26,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-06 22:08:26,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 395 flow [2023-11-06 22:08:26,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 179 transitions, 376 flow [2023-11-06 22:08:26,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:08:26,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 179 transitions, 376 flow [2023-11-06 22:08:26,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 179 transitions, 376 flow [2023-11-06 22:08:26,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 376 flow [2023-11-06 22:08:26,560 INFO L124 PetriNetUnfolderBase]: 12/179 cut-off events. [2023-11-06 22:08:26,561 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:08:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 179 events. 12/179 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-06 22:08:26,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-11-06 22:08:51,158 INFO L134 LiptonReduction]: Checked pairs total: 3359 [2023-11-06 22:08:51,158 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-11-06 22:08:51,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:08:51,186 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;@287b9c90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:08:51,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 22:08:51,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:08:51,191 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:08:51,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:08:51,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:51,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:08:51,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:08:51,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 21888, now seen corresponding path program 1 times [2023-11-06 22:08:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:51,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259355881] [2023-11-06 22:08:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:51,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:51,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:51,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:08:51,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:08:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:51,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:08:51,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:51,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:08:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:08:51,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:08:51,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:08:51,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:08:51,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:08:51,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:08:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:08:51,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:51,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:08:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:51,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:51,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:51,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259355881] [2023-11-06 22:08:51,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259355881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:51,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:51,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449970034] [2023-11-06 22:08:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:52,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 369 [2023-11-06 22:08:52,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:52,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:52,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 369 [2023-11-06 22:08:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:53,095 INFO L124 PetriNetUnfolderBase]: 2765/3512 cut-off events. [2023-11-06 22:08:53,095 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:08:53,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 3512 events. 2765/3512 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 14341 event pairs, 1310 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 6096. Up to 3484 conditions per place. [2023-11-06 22:08:53,171 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 36 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-06 22:08:53,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 184 flow [2023-11-06 22:08:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-11-06 22:08:53,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2023-11-06 22:08:53,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-11-06 22:08:53,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-11-06 22:08:53,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:53,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-11-06 22:08:53,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:53,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:53,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:53,242 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 108 flow. Second operand 3 states and 534 transitions. [2023-11-06 22:08:53,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 184 flow [2023-11-06 22:08:53,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:08:53,260 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 100 flow [2023-11-06 22:08:53,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-06 22:08:53,274 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-06 22:08:53,274 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 100 flow [2023-11-06 22:08:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:53,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:53,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:08:53,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-06 22:08:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:53,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:08:53,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 21889, now seen corresponding path program 1 times [2023-11-06 22:08:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822568668] [2023-11-06 22:08:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:53,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:53,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:53,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:08:53,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:08:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:53,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:08:53,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:53,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:08:53,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:08:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:53,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:53,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:53,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:53,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,934 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:53,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:53,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:53,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:54,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:08:54,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:08:54,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:54,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:08:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:54,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:54,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822568668] [2023-11-06 22:08:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822568668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:54,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969882468] [2023-11-06 22:08:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:54,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 369 [2023-11-06 22:08:54,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:54,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:54,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 369 [2023-11-06 22:08:54,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:55,155 INFO L124 PetriNetUnfolderBase]: 2768/3516 cut-off events. [2023-11-06 22:08:55,155 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:08:55,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 3516 events. 2768/3516 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 14315 event pairs, 1310 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 7017. Up to 3490 conditions per place. [2023-11-06 22:08:55,190 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 39 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2023-11-06 22:08:55,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 202 flow [2023-11-06 22:08:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-11-06 22:08:55,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2023-11-06 22:08:55,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-11-06 22:08:55,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-11-06 22:08:55,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:55,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-11-06 22:08:55,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,204 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 100 flow. Second operand 3 states and 534 transitions. [2023-11-06 22:08:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 202 flow [2023-11-06 22:08:55,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:08:55,207 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 125 flow [2023-11-06 22:08:55,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-11-06 22:08:55,208 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-11-06 22:08:55,208 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 125 flow [2023-11-06 22:08:55,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:55,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:55,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:55,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:08:55,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash 680209, now seen corresponding path program 1 times [2023-11-06 22:08:55,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:55,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735296827] [2023-11-06 22:08:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:55,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:08:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:08:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:55,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:08:55,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:55,658 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:08:55,659 INFO L351 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:08:55,686 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:08:55,687 INFO L351 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 19 treesize of output 22 [2023-11-06 22:08:55,729 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:08:55,729 INFO L351 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 19 treesize of output 22 [2023-11-06 22:08:55,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:55,773 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:08:55,773 INFO L351 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:08:55,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:55,829 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:08:55,830 INFO L351 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:08:55,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:55,893 INFO L322 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-06 22:08:55,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-06 22:08:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:08:56,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:08:56,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735296827] [2023-11-06 22:08:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735296827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:08:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:08:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:08:56,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185772295] [2023-11-06 22:08:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:08:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:08:56,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:08:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:08:56,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-06 22:08:56,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:56,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:08:56,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-06 22:08:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:08:56,982 INFO L124 PetriNetUnfolderBase]: 2187/2809 cut-off events. [2023-11-06 22:08:56,983 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:08:56,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 2809 events. 2187/2809 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 11342 event pairs, 1030 based on Foata normal form. 0/781 useless extension candidates. Maximal degree in co-relation 5607. Up to 2783 conditions per place. [2023-11-06 22:08:57,010 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-06 22:08:57,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 196 flow [2023-11-06 22:08:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:08:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:08:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-11-06 22:08:57,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47244805781391147 [2023-11-06 22:08:57,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-11-06 22:08:57,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-11-06 22:08:57,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:08:57,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-11-06 22:08:57,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,023 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 125 flow. Second operand 3 states and 523 transitions. [2023-11-06 22:08:57,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 196 flow [2023-11-06 22:08:57,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:08:57,029 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 110 flow [2023-11-06 22:08:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-06 22:08:57,031 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-06 22:08:57,031 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 110 flow [2023-11-06 22:08:57,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:08:57,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:08:57,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:08:57,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:08:57,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:57,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:08:57,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:08:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash 680208, now seen corresponding path program 1 times [2023-11-06 22:08:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:08:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926677133] [2023-11-06 22:08:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:08:57,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:08:57,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:08:57,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:08:57,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:08:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:08:57,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:08:57,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:08:57,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,454 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:08:57,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-11-06 22:08:57,488 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-06 22:08:57,488 INFO L351 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 90 treesize of output 89 [2023-11-06 22:08:57,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,654 INFO L322 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-06 22:08:57,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 26 [2023-11-06 22:08:57,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:08:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:08:57,855 INFO L322 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-06 22:08:57,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2023-11-06 22:08:57,868 INFO L351 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 10 treesize of output 8 [2023-11-06 22:08:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:58,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:08:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:08:58,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:08:58,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926677133] [2023-11-06 22:08:58,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926677133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:08:58,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:08:58,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:08:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276067687] [2023-11-06 22:08:58,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:08:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:08:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:08:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:08:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:00,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-06 22:09:00,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:00,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:00,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-06 22:09:00,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:02,073 INFO L124 PetriNetUnfolderBase]: 2190/2817 cut-off events. [2023-11-06 22:09:02,073 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:09:02,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5659 conditions, 2817 events. 2190/2817 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 11391 event pairs, 1030 based on Foata normal form. 0/785 useless extension candidates. Maximal degree in co-relation 5651. Up to 2782 conditions per place. [2023-11-06 22:09:02,108 INFO L140 encePairwiseOnDemand]: 364/369 looper letters, 39 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-06 22:09:02,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 240 flow [2023-11-06 22:09:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 971 transitions. [2023-11-06 22:09:02,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385727190605239 [2023-11-06 22:09:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 971 transitions. [2023-11-06 22:09:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 971 transitions. [2023-11-06 22:09:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 971 transitions. [2023-11-06 22:09:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.83333333333334) internal successors, (971), 6 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,129 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 110 flow. Second operand 6 states and 971 transitions. [2023-11-06 22:09:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 240 flow [2023-11-06 22:09:02,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:02,132 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 182 flow [2023-11-06 22:09:02,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-06 22:09:02,135 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-06 22:09:02,135 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 182 flow [2023-11-06 22:09:02,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:02,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:02,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:09:02,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:02,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:02,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:02,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 680143, now seen corresponding path program 1 times [2023-11-06 22:09:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:02,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576115129] [2023-11-06 22:09:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:02,350 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:02,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:09:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:02,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:09:02,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:02,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:09:02,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:02,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:02,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:02,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:03,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:03,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576115129] [2023-11-06 22:09:03,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576115129] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:03,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:03,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:09:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336719397] [2023-11-06 22:09:03,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:09:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:09:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:09:04,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 369 [2023-11-06 22:09:04,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:04,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:04,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 369 [2023-11-06 22:09:04,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:05,437 INFO L124 PetriNetUnfolderBase]: 2189/2814 cut-off events. [2023-11-06 22:09:05,437 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:09:05,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5676 conditions, 2814 events. 2189/2814 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 11294 event pairs, 1030 based on Foata normal form. 3/793 useless extension candidates. Maximal degree in co-relation 5663. Up to 2785 conditions per place. [2023-11-06 22:09:05,459 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 37 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2023-11-06 22:09:05,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 268 flow [2023-11-06 22:09:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:09:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:09:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 997 transitions. [2023-11-06 22:09:05,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450316169828365 [2023-11-06 22:09:05,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 997 transitions. [2023-11-06 22:09:05,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 997 transitions. [2023-11-06 22:09:05,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:05,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 997 transitions. [2023-11-06 22:09:05,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,476 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 182 flow. Second operand 6 states and 997 transitions. [2023-11-06 22:09:05,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 268 flow [2023-11-06 22:09:05,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 247 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:05,479 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 173 flow [2023-11-06 22:09:05,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-11-06 22:09:05,480 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-11-06 22:09:05,480 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 173 flow [2023-11-06 22:09:05,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:05,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:05,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:09:05,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:05,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:05,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:05,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash 21114964, now seen corresponding path program 1 times [2023-11-06 22:09:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:05,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892120210] [2023-11-06 22:09:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:05,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:05,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:09:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:05,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:09:05,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:05,806 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:09:05,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-06 22:09:05,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:05,841 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:09:05,841 INFO L351 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:09:05,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:05,891 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:09:05,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-06 22:09:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:05,926 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:09:05,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:09:05,953 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:09:05,953 INFO L351 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 19 treesize of output 22 [2023-11-06 22:09:05,985 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:09:05,986 INFO L351 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:09:06,019 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:09:06,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-06 22:09:06,054 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:09:06,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-06 22:09:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:06,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:06,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:06,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892120210] [2023-11-06 22:09:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892120210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:06,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:06,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749446912] [2023-11-06 22:09:06,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:06,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:06,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:06,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-06 22:09:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-06 22:09:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:06,888 INFO L124 PetriNetUnfolderBase]: 2102/2697 cut-off events. [2023-11-06 22:09:06,888 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:09:06,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5441 conditions, 2697 events. 2102/2697 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 10790 event pairs, 987 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 5428. Up to 2671 conditions per place. [2023-11-06 22:09:06,906 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 43 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-06 22:09:06,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 257 flow [2023-11-06 22:09:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-11-06 22:09:06,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706413730803975 [2023-11-06 22:09:06,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-11-06 22:09:06,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-11-06 22:09:06,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:06,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-11-06 22:09:06,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,916 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 173 flow. Second operand 3 states and 521 transitions. [2023-11-06 22:09:06,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 257 flow [2023-11-06 22:09:06,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 229 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:09:06,919 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 143 flow [2023-11-06 22:09:06,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:09:06,920 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-11-06 22:09:06,920 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 143 flow [2023-11-06 22:09:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:06,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:06,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:09:06,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:07,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:07,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 21114965, now seen corresponding path program 1 times [2023-11-06 22:09:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852875794] [2023-11-06 22:09:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:07,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:07,144 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:07,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:09:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:07,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:09:07,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-06 22:09:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:07,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:09:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,343 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:09:07,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:07,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-06 22:09:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:07,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,415 INFO L351 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 [2023-11-06 22:09:07,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:07,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-06 22:09:07,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:07,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:07,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:07,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852875794] [2023-11-06 22:09:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852875794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:07,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047781496] [2023-11-06 22:09:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:07,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 369 [2023-11-06 22:09:07,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:07,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:07,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 369 [2023-11-06 22:09:07,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:08,296 INFO L124 PetriNetUnfolderBase]: 2015/2580 cut-off events. [2023-11-06 22:09:08,296 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-06 22:09:08,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 2580 events. 2015/2580 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 10307 event pairs, 944 based on Foata normal form. 0/747 useless extension candidates. Maximal degree in co-relation 5178. Up to 2554 conditions per place. [2023-11-06 22:09:08,318 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 41 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 22:09:08,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 223 flow [2023-11-06 22:09:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-11-06 22:09:08,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-11-06 22:09:08,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-11-06 22:09:08,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-11-06 22:09:08,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:08,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-11-06 22:09:08,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,328 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 143 flow. Second operand 3 states and 531 transitions. [2023-11-06 22:09:08,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 223 flow [2023-11-06 22:09:08,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:08,331 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 140 flow [2023-11-06 22:09:08,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-06 22:09:08,332 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-06 22:09:08,332 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 140 flow [2023-11-06 22:09:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:08,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:08,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:09:08,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:08,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:08,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:08,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash 654558424, now seen corresponding path program 1 times [2023-11-06 22:09:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464825152] [2023-11-06 22:09:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:08,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:08,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:09:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:08,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:09:08,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:08,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:09:08,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:09:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:09:08,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:09:08,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:09:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:09:08,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:08,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:09:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:08,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:08,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464825152] [2023-11-06 22:09:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464825152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:09:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38862029] [2023-11-06 22:09:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:09:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:09:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:09:09,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 369 [2023-11-06 22:09:09,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:09,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 369 [2023-11-06 22:09:09,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:09,537 INFO L124 PetriNetUnfolderBase]: 1023/1345 cut-off events. [2023-11-06 22:09:09,537 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:09:09,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1345 events. 1023/1345 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4950 event pairs, 470 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 2707. Up to 1321 conditions per place. [2023-11-06 22:09:09,547 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 32 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-11-06 22:09:09,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 212 flow [2023-11-06 22:09:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:09:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:09:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2023-11-06 22:09:09,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44579945799457993 [2023-11-06 22:09:09,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2023-11-06 22:09:09,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2023-11-06 22:09:09,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:09,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2023-11-06 22:09:09,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 369.0) internal successors, (1845), 5 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,559 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 140 flow. Second operand 4 states and 658 transitions. [2023-11-06 22:09:09,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 212 flow [2023-11-06 22:09:09,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:09,561 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 147 flow [2023-11-06 22:09:09,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-06 22:09:09,562 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-11-06 22:09:09,562 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 147 flow [2023-11-06 22:09:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:09,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:09,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:09:09,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:09,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:09,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:09,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash 654558425, now seen corresponding path program 1 times [2023-11-06 22:09:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193303227] [2023-11-06 22:09:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:09,777 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:09,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:09:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:09,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:09:09,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:09,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:09:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,882 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:09,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:09,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:09,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:09,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:09,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:09,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:09,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:10,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:10,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:10,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:10,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:10,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:10,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:10,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:10,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:10,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193303227] [2023-11-06 22:09:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193303227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068167779] [2023-11-06 22:09:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:10,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:10,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:10,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 369 [2023-11-06 22:09:10,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:10,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:10,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 369 [2023-11-06 22:09:10,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:11,198 INFO L124 PetriNetUnfolderBase]: 1167/1555 cut-off events. [2023-11-06 22:09:11,198 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-06 22:09:11,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3152 conditions, 1555 events. 1167/1555 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6106 event pairs, 204 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 3137. Up to 1250 conditions per place. [2023-11-06 22:09:11,208 INFO L140 encePairwiseOnDemand]: 362/369 looper letters, 46 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2023-11-06 22:09:11,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 293 flow [2023-11-06 22:09:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 839 transitions. [2023-11-06 22:09:11,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45474254742547426 [2023-11-06 22:09:11,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 839 transitions. [2023-11-06 22:09:11,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 839 transitions. [2023-11-06 22:09:11,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:11,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 839 transitions. [2023-11-06 22:09:11,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:11,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:11,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:11,223 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 147 flow. Second operand 5 states and 839 transitions. [2023-11-06 22:09:11,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 293 flow [2023-11-06 22:09:11,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:11,226 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 172 flow [2023-11-06 22:09:11,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-11-06 22:09:11,227 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 22:09:11,227 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 172 flow [2023-11-06 22:09:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:11,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:11,228 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:09:11,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:11,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:11,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:11,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1211123390, now seen corresponding path program 2 times [2023-11-06 22:09:11,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:11,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98942646] [2023-11-06 22:09:11,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:11,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:11,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:09:11,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:09:11,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:11,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:09:11,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:11,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:11,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,575 INFO L351 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 [2023-11-06 22:09:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:11,613 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-06 22:09:11,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:09:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:09:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:09:11,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:11,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,772 INFO L351 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 [2023-11-06 22:09:11,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:09:11,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:11,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:09:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:09:11,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:11,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98942646] [2023-11-06 22:09:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98942646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:11,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:11,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772976639] [2023-11-06 22:09:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:12,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 369 [2023-11-06 22:09:12,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:12,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 369 [2023-11-06 22:09:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:12,411 INFO L124 PetriNetUnfolderBase]: 709/967 cut-off events. [2023-11-06 22:09:12,411 INFO L125 PetriNetUnfolderBase]: For 118/163 co-relation queries the response was YES. [2023-11-06 22:09:12,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 967 events. 709/967 cut-off events. For 118/163 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3534 event pairs, 342 based on Foata normal form. 46/457 useless extension candidates. Maximal degree in co-relation 2281. Up to 951 conditions per place. [2023-11-06 22:09:12,421 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-06 22:09:12,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 235 flow [2023-11-06 22:09:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-11-06 22:09:12,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751580849141825 [2023-11-06 22:09:12,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-11-06 22:09:12,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-11-06 22:09:12,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:12,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-11-06 22:09:12,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,435 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 172 flow. Second operand 3 states and 526 transitions. [2023-11-06 22:09:12,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 235 flow [2023-11-06 22:09:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 196 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-06 22:09:12,441 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 120 flow [2023-11-06 22:09:12,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-06 22:09:12,444 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-06 22:09:12,444 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 120 flow [2023-11-06 22:09:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:12,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:12,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:09:12,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:12,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:12,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:12,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1183520193, now seen corresponding path program 1 times [2023-11-06 22:09:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069777306] [2023-11-06 22:09:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:12,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:12,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:12,659 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:12,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:09:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:12,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:09:12,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:12,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:09:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:12,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:12,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:12,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:12,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:12,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:13,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:13,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:13,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:13,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:13,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:13,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:13,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:13,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:13,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:13,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069777306] [2023-11-06 22:09:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069777306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:13,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:13,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:09:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000262314] [2023-11-06 22:09:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:13,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 369 [2023-11-06 22:09:13,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:13,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:13,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 369 [2023-11-06 22:09:13,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:14,342 INFO L124 PetriNetUnfolderBase]: 984/1428 cut-off events. [2023-11-06 22:09:14,342 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-06 22:09:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 1428 events. 984/1428 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6334 event pairs, 532 based on Foata normal form. 32/806 useless extension candidates. Maximal degree in co-relation 3161. Up to 1103 conditions per place. [2023-11-06 22:09:14,351 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 68 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2023-11-06 22:09:14,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 344 flow [2023-11-06 22:09:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2023-11-06 22:09:14,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-11-06 22:09:14,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2023-11-06 22:09:14,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2023-11-06 22:09:14,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:14,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2023-11-06 22:09:14,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,365 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 120 flow. Second operand 5 states and 840 transitions. [2023-11-06 22:09:14,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 344 flow [2023-11-06 22:09:14,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:14,368 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 156 flow [2023-11-06 22:09:14,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-11-06 22:09:14,369 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-06 22:09:14,369 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 156 flow [2023-11-06 22:09:14,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:14,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:14,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:09:14,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-06 22:09:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:14,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:14,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1183338963, now seen corresponding path program 1 times [2023-11-06 22:09:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:14,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314004302] [2023-11-06 22:09:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:14,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:14,584 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:14,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:09:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:14,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:09:14,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:14,722 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:09:14,723 INFO L351 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 21 treesize of output 15 [2023-11-06 22:09:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,734 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,734 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:09:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,757 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,757 INFO L351 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:09:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,768 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,768 INFO L351 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:09:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,777 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:09:14,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,802 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,802 INFO L351 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:09:14,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,838 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,838 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:09:14,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,860 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,860 INFO L351 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:09:14,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,889 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:09:14,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,901 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:09:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,911 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:09:14,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:14,934 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:09:14,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:09:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:14,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:14,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314004302] [2023-11-06 22:09:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314004302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:14,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:14,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:14,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081699838] [2023-11-06 22:09:14,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:14,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:14,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:15,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 369 [2023-11-06 22:09:15,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:15,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 369 [2023-11-06 22:09:15,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:15,296 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([643] L56-5-->L56-5: Formula: (let ((.cse1 (bvmul v_thread2Thread1of1ForFork0_~i~1_44 (_ bv4 32)))) (let ((.cse2 (bvadd v_~A~0.offset_45 .cse1)) (.cse3 (bvadd v_~A~0.offset_45 (_ bv4 32) .cse1))) (and (= v_thread2Thread1of1ForFork0_~i~1_43 (bvadd v_thread2Thread1of1ForFork0_~i~1_44 (_ bv1 32))) (= v_~sum2~0_29 (bvadd (let ((.cse0 (select |v_#memory_int_81| v_~A~0.base_54))) (concat (concat (concat (select .cse0 (bvadd v_~A~0.offset_45 (_ bv3 32) .cse1)) (select .cse0 (bvadd v_~A~0.offset_45 (_ bv2 32) .cse1))) (select .cse0 (bvadd v_~A~0.offset_45 .cse1 (_ bv1 32)))) (select .cse0 .cse2))) v_~sum2~0_30)) (= (bvadd (select |v_#valid_198| v_~A~0.base_54) (_ bv1 1)) (_ bv0 1)) (bvslt v_thread2Thread1of1ForFork0_~i~1_44 v_~M~0_37) (bvule .cse2 .cse3) (bvule .cse3 (select |v_#length_151| v_~A~0.base_54))))) InVars {thread2Thread1of1ForFork0_~i~1=v_thread2Thread1of1ForFork0_~i~1_44, ~A~0.base=v_~A~0.base_54, ~A~0.offset=v_~A~0.offset_45, ~M~0=v_~M~0_37, #valid=|v_#valid_198|, #memory_int=|v_#memory_int_81|, ~sum2~0=v_~sum2~0_30, #length=|v_#length_151|} OutVars{thread2Thread1of1ForFork0_~i~1=v_thread2Thread1of1ForFork0_~i~1_43, ~A~0.base=v_~A~0.base_54, thread2Thread1of1ForFork0_#t~post3=|v_thread2Thread1of1ForFork0_#t~post3_19|, ~A~0.offset=v_~A~0.offset_45, ~M~0=v_~M~0_37, #valid=|v_#valid_198|, #memory_int=|v_#memory_int_81|, ~sum2~0=v_~sum2~0_29, #length=|v_#length_151|, thread2Thread1of1ForFork0_#t~mem4=|v_thread2Thread1of1ForFork0_#t~mem4_21|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~i~1, thread2Thread1of1ForFork0_#t~post3, ~sum2~0, thread2Thread1of1ForFork0_#t~mem4][29], [170#thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCEtrue, 370#(= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))), 14#L48-5true, 328#(and (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t1~0#1.offset| (_ bv0 32))), 320#(and (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (bvule ~N~0 (_ bv1073741823 32))), 266#(or (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t1~0#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))))), Black: 351#(and (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), Black: 358#(and (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), 208#(or (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t2~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))))) (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|)))))), 76#L56-5true, 64#L85-1true, 296#(= (bvadd (select |#valid| ~A~0.base) (_ bv1 1)) (_ bv0 1)), 279#(and (= |ULTIMATE.start_main_~#t2~0#1.offset| (_ bv0 32)) (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 342#true]) [2023-11-06 22:09:15,297 INFO L294 olderBase$Statistics]: this new event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,297 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,297 INFO L297 olderBase$Statistics]: existing Event has 14 ancestors and is cut-off event [2023-11-06 22:09:15,297 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,298 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([643] L56-5-->L56-5: Formula: (let ((.cse1 (bvmul v_thread2Thread1of1ForFork0_~i~1_44 (_ bv4 32)))) (let ((.cse2 (bvadd v_~A~0.offset_45 .cse1)) (.cse3 (bvadd v_~A~0.offset_45 (_ bv4 32) .cse1))) (and (= v_thread2Thread1of1ForFork0_~i~1_43 (bvadd v_thread2Thread1of1ForFork0_~i~1_44 (_ bv1 32))) (= v_~sum2~0_29 (bvadd (let ((.cse0 (select |v_#memory_int_81| v_~A~0.base_54))) (concat (concat (concat (select .cse0 (bvadd v_~A~0.offset_45 (_ bv3 32) .cse1)) (select .cse0 (bvadd v_~A~0.offset_45 (_ bv2 32) .cse1))) (select .cse0 (bvadd v_~A~0.offset_45 .cse1 (_ bv1 32)))) (select .cse0 .cse2))) v_~sum2~0_30)) (= (bvadd (select |v_#valid_198| v_~A~0.base_54) (_ bv1 1)) (_ bv0 1)) (bvslt v_thread2Thread1of1ForFork0_~i~1_44 v_~M~0_37) (bvule .cse2 .cse3) (bvule .cse3 (select |v_#length_151| v_~A~0.base_54))))) InVars {thread2Thread1of1ForFork0_~i~1=v_thread2Thread1of1ForFork0_~i~1_44, ~A~0.base=v_~A~0.base_54, ~A~0.offset=v_~A~0.offset_45, ~M~0=v_~M~0_37, #valid=|v_#valid_198|, #memory_int=|v_#memory_int_81|, ~sum2~0=v_~sum2~0_30, #length=|v_#length_151|} OutVars{thread2Thread1of1ForFork0_~i~1=v_thread2Thread1of1ForFork0_~i~1_43, ~A~0.base=v_~A~0.base_54, thread2Thread1of1ForFork0_#t~post3=|v_thread2Thread1of1ForFork0_#t~post3_19|, ~A~0.offset=v_~A~0.offset_45, ~M~0=v_~M~0_37, #valid=|v_#valid_198|, #memory_int=|v_#memory_int_81|, ~sum2~0=v_~sum2~0_29, #length=|v_#length_151|, thread2Thread1of1ForFork0_#t~mem4=|v_thread2Thread1of1ForFork0_#t~mem4_21|} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_~i~1, thread2Thread1of1ForFork0_#t~post3, ~sum2~0, thread2Thread1of1ForFork0_#t~mem4][29], [370#(= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))), 164#thread3EXITtrue, 14#L48-5true, 328#(and (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t1~0#1.offset| (_ bv0 32))), 320#(and (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (bvule ~N~0 (_ bv1073741823 32))), Black: 351#(and (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), 266#(or (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t1~0#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))))), Black: 358#(and (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), 208#(or (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t2~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))))) (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|)))))), 76#L56-5true, 64#L85-1true, 296#(= (bvadd (select |#valid| ~A~0.base) (_ bv1 1)) (_ bv0 1)), 279#(and (= |ULTIMATE.start_main_~#t2~0#1.offset| (_ bv0 32)) (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 342#true]) [2023-11-06 22:09:15,299 INFO L294 olderBase$Statistics]: this new event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,299 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,299 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:15,299 INFO L297 olderBase$Statistics]: existing Event has 14 ancestors and is cut-off event [2023-11-06 22:09:15,345 INFO L124 PetriNetUnfolderBase]: 894/1268 cut-off events. [2023-11-06 22:09:15,345 INFO L125 PetriNetUnfolderBase]: For 966/1092 co-relation queries the response was YES. [2023-11-06 22:09:15,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 1268 events. 894/1268 cut-off events. For 966/1092 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5566 event pairs, 457 based on Foata normal form. 121/967 useless extension candidates. Maximal degree in co-relation 3420. Up to 1231 conditions per place. [2023-11-06 22:09:15,354 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-06 22:09:15,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 228 flow [2023-11-06 22:09:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-11-06 22:09:15,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46251129177958444 [2023-11-06 22:09:15,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-11-06 22:09:15,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-11-06 22:09:15,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:15,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-11-06 22:09:15,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,364 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 156 flow. Second operand 3 states and 512 transitions. [2023-11-06 22:09:15,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 228 flow [2023-11-06 22:09:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:15,366 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 149 flow [2023-11-06 22:09:15,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-06 22:09:15,367 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-11-06 22:09:15,367 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 149 flow [2023-11-06 22:09:15,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:15,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:15,368 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:09:15,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:15,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:15,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:15,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1211123455, now seen corresponding path program 2 times [2023-11-06 22:09:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128363533] [2023-11-06 22:09:15,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:15,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:15,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:15,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:09:15,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:09:15,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:15,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:09:15,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:15,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:09:15,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:15,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:15,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,798 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:15,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:15,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:15,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,854 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:15,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:15,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:15,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:15,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:16,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:16,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:16,023 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:16,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:16,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:16,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:16,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:16,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:16,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128363533] [2023-11-06 22:09:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128363533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:16,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:16,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:09:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213818646] [2023-11-06 22:09:16,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:09:16,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:09:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:09:21,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 369 [2023-11-06 22:09:21,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 149 flow. Second operand has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:21,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:21,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 369 [2023-11-06 22:09:21,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:24,045 INFO L124 PetriNetUnfolderBase]: 897/1277 cut-off events. [2023-11-06 22:09:24,045 INFO L125 PetriNetUnfolderBase]: For 920/1043 co-relation queries the response was YES. [2023-11-06 22:09:24,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 1277 events. 897/1277 cut-off events. For 920/1043 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5637 event pairs, 451 based on Foata normal form. 118/971 useless extension candidates. Maximal degree in co-relation 3446. Up to 1231 conditions per place. [2023-11-06 22:09:24,055 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 29 selfloop transitions, 21 changer transitions 0/54 dead transitions. [2023-11-06 22:09:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 297 flow [2023-11-06 22:09:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1961 transitions. [2023-11-06 22:09:24,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428635953026197 [2023-11-06 22:09:24,064 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1961 transitions. [2023-11-06 22:09:24,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1961 transitions. [2023-11-06 22:09:24,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:24,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1961 transitions. [2023-11-06 22:09:24,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 163.41666666666666) internal successors, (1961), 12 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 369.0) internal successors, (4797), 13 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,082 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 369.0) internal successors, (4797), 13 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,082 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 149 flow. Second operand 12 states and 1961 transitions. [2023-11-06 22:09:24,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 297 flow [2023-11-06 22:09:24,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:24,085 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 272 flow [2023-11-06 22:09:24,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-06 22:09:24,086 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-11-06 22:09:24,086 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 272 flow [2023-11-06 22:09:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:24,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:09:24,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:24,300 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:24,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1183338961, now seen corresponding path program 1 times [2023-11-06 22:09:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767830957] [2023-11-06 22:09:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:24,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:24,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:24,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:24,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:09:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:24,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:09:24,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:09:24,430 INFO L351 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 10 treesize of output 8 [2023-11-06 22:09:24,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,446 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,472 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,487 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:09:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:09:24,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:24,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,542 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:09:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:24,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:24,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:24,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767830957] [2023-11-06 22:09:24,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767830957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:24,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:24,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:09:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966370641] [2023-11-06 22:09:24,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:24,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:09:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:09:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:09:24,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 369 [2023-11-06 22:09:24,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:24,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:24,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 369 [2023-11-06 22:09:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:25,030 INFO L124 PetriNetUnfolderBase]: 834/1182 cut-off events. [2023-11-06 22:09:25,031 INFO L125 PetriNetUnfolderBase]: For 857/967 co-relation queries the response was YES. [2023-11-06 22:09:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 1182 events. 834/1182 cut-off events. For 857/967 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5052 event pairs, 416 based on Foata normal form. 106/929 useless extension candidates. Maximal degree in co-relation 3232. Up to 1146 conditions per place. [2023-11-06 22:09:25,040 INFO L140 encePairwiseOnDemand]: 366/369 looper letters, 47 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-11-06 22:09:25,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 364 flow [2023-11-06 22:09:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:09:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:09:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-11-06 22:09:25,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-11-06 22:09:25,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-11-06 22:09:25,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-11-06 22:09:25,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:25,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-11-06 22:09:25,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:25,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:25,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:25,049 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 272 flow. Second operand 3 states and 522 transitions. [2023-11-06 22:09:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 364 flow [2023-11-06 22:09:25,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 328 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-06 22:09:25,052 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 234 flow [2023-11-06 22:09:25,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-06 22:09:25,053 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-11-06 22:09:25,053 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 234 flow [2023-11-06 22:09:25,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:25,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:25,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:25,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:09:25,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:25,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:25,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:25,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1971192700, now seen corresponding path program 1 times [2023-11-06 22:09:25,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:25,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220881368] [2023-11-06 22:09:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:25,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:25,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:09:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:25,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:09:25,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:25,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-06 22:09:25,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,450 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,467 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:25,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:25,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:25,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:25,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:25,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220881368] [2023-11-06 22:09:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220881368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:25,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650204126] [2023-11-06 22:09:25,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:25,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:26,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 369 [2023-11-06 22:09:26,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:26,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:26,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 369 [2023-11-06 22:09:26,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:27,368 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([629] L64-5-->L64-5: Formula: (let ((.cse1 (bvmul (_ bv4 32) v_thread3Thread1of1ForFork2_~i~2_44))) (let ((.cse2 (bvadd v_~A~0.offset_35 .cse1)) (.cse3 (bvadd v_~A~0.offset_35 (_ bv4 32) .cse1))) (and (bvslt v_thread3Thread1of1ForFork2_~i~2_44 v_~N~0_47) (= (_ bv0 1) (bvadd (select |v_#valid_178| v_~A~0.base_44) (_ bv1 1))) (= v_~sum3~0_21 (bvadd v_~sum3~0_22 (let ((.cse0 (select |v_#memory_int_75| v_~A~0.base_44))) (concat (concat (concat (select .cse0 (bvadd v_~A~0.offset_35 .cse1 (_ bv3 32))) (select .cse0 (bvadd v_~A~0.offset_35 (_ bv2 32) .cse1))) (select .cse0 (bvadd v_~A~0.offset_35 .cse1 (_ bv1 32)))) (select .cse0 .cse2))))) (= v_thread3Thread1of1ForFork2_~i~2_43 (bvadd v_thread3Thread1of1ForFork2_~i~2_44 (_ bv1 32))) (bvule .cse2 .cse3) (bvule .cse3 (select |v_#length_135| v_~A~0.base_44))))) InVars {~A~0.base=v_~A~0.base_44, ~A~0.offset=v_~A~0.offset_35, #valid=|v_#valid_178|, #memory_int=|v_#memory_int_75|, ~sum3~0=v_~sum3~0_22, #length=|v_#length_135|, ~N~0=v_~N~0_47, thread3Thread1of1ForFork2_~i~2=v_thread3Thread1of1ForFork2_~i~2_44} OutVars{~A~0.base=v_~A~0.base_44, ~A~0.offset=v_~A~0.offset_35, #valid=|v_#valid_178|, thread3Thread1of1ForFork2_#t~post5=|v_thread3Thread1of1ForFork2_#t~post5_17|, #memory_int=|v_#memory_int_75|, ~sum3~0=v_~sum3~0_21, #length=|v_#length_135|, ~N~0=v_~N~0_47, thread3Thread1of1ForFork2_~i~2=v_thread3Thread1of1ForFork2_~i~2_43, thread3Thread1of1ForFork2_#t~mem6=|v_thread3Thread1of1ForFork2_#t~mem6_19|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post5, ~sum3~0, thread3Thread1of1ForFork2_~i~2, thread3Thread1of1ForFork2_#t~mem6][52], [370#(= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))), 2#L64-5true, 14#L48-5true, 63#thread2EXITtrue, 320#(and (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (bvule ~N~0 (_ bv1073741823 32))), 328#(and (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t1~0#1.offset| (_ bv0 32))), Black: 351#(and (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), 266#(or (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t1~0#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))))), Black: 358#(and (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), 208#(or (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t2~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))))) (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|)))))), Black: 433#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 427#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd (_ bv3 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (not (bvslt (bvadd (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (_ bv20 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (_ bv20 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 405#(and (= (_ bv0 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (= (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (= (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (bvule |ULTIMATE.start_create_fresh_uint_array_~size#1| (_ bv1073741823 32))), Black: 431#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 429#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd (_ bv3 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 409#(or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))), 384#true, 64#L85-1true, 296#(= (bvadd (select |#valid| ~A~0.base) (_ bv1 1)) (_ bv0 1)), 469#(and (exists ((~N~0 (_ BitVec 32))) (and (bvsle ~M~0 ~N~0) (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (bvule ~N~0 (_ bv1073741823 32)))) (= ~A~0.offset (_ bv0 32)) (bvsge ~M~0 (_ bv0 32))), 279#(and (= |ULTIMATE.start_main_~#t2~0#1.offset| (_ bv0 32)) (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), 446#(and (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|)) (= |ULTIMATE.start_main_~#t3~0#1.offset| (_ bv0 32)))]) [2023-11-06 22:09:27,372 INFO L294 olderBase$Statistics]: this new event has 15 ancestors and is cut-off event [2023-11-06 22:09:27,372 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:27,372 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:09:27,372 INFO L297 olderBase$Statistics]: existing Event has 14 ancestors and is cut-off event [2023-11-06 22:09:27,433 INFO L124 PetriNetUnfolderBase]: 974/1368 cut-off events. [2023-11-06 22:09:27,433 INFO L125 PetriNetUnfolderBase]: For 1034/1157 co-relation queries the response was YES. [2023-11-06 22:09:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1368 events. 974/1368 cut-off events. For 1034/1157 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5820 event pairs, 298 based on Foata normal form. 121/1157 useless extension candidates. Maximal degree in co-relation 3753. Up to 1067 conditions per place. [2023-11-06 22:09:27,441 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 50 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2023-11-06 22:09:27,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 68 transitions, 424 flow [2023-11-06 22:09:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 825 transitions. [2023-11-06 22:09:27,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2023-11-06 22:09:27,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 825 transitions. [2023-11-06 22:09:27,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 825 transitions. [2023-11-06 22:09:27,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:27,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 825 transitions. [2023-11-06 22:09:27,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:27,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:27,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:27,454 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 234 flow. Second operand 5 states and 825 transitions. [2023-11-06 22:09:27,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 68 transitions, 424 flow [2023-11-06 22:09:27,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:09:27,458 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 280 flow [2023-11-06 22:09:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-11-06 22:09:27,458 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-11-06 22:09:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 280 flow [2023-11-06 22:09:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:27,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:27,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:27,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1137483405, now seen corresponding path program 1 times [2023-11-06 22:09:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445481005] [2023-11-06 22:09:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:27,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:27,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:27,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:27,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:09:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:27,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:09:27,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:27,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:09:27,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:27,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:27,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:27,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:27,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:27,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:27,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:27,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:27,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,002 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:28,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,026 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,044 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:28,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:28,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:28,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:28,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:28,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445481005] [2023-11-06 22:09:28,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445481005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:28,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:28,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:09:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266855555] [2023-11-06 22:09:28,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:31,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 369 [2023-11-06 22:09:31,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 280 flow. Second operand has 10 states, 10 states have (on average 156.4) internal successors, (1564), 10 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:31,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:31,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 369 [2023-11-06 22:09:31,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:33,837 INFO L124 PetriNetUnfolderBase]: 1484/2038 cut-off events. [2023-11-06 22:09:33,837 INFO L125 PetriNetUnfolderBase]: For 2302/2550 co-relation queries the response was YES. [2023-11-06 22:09:33,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6423 conditions, 2038 events. 1484/2038 cut-off events. For 2302/2550 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8918 event pairs, 317 based on Foata normal form. 233/1748 useless extension candidates. Maximal degree in co-relation 6398. Up to 871 conditions per place. [2023-11-06 22:09:33,853 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 106 selfloop transitions, 23 changer transitions 0/131 dead transitions. [2023-11-06 22:09:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 131 transitions, 837 flow [2023-11-06 22:09:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:09:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:09:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1493 transitions. [2023-11-06 22:09:33,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495633845227341 [2023-11-06 22:09:33,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1493 transitions. [2023-11-06 22:09:33,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1493 transitions. [2023-11-06 22:09:33,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:33,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1493 transitions. [2023-11-06 22:09:33,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.88888888888889) internal successors, (1493), 9 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:33,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:33,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:33,873 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 280 flow. Second operand 9 states and 1493 transitions. [2023-11-06 22:09:33,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 131 transitions, 837 flow [2023-11-06 22:09:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 131 transitions, 788 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:33,879 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 340 flow [2023-11-06 22:09:33,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=340, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-11-06 22:09:33,881 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2023-11-06 22:09:33,881 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 340 flow [2023-11-06 22:09:33,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.4) internal successors, (1564), 10 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:33,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:33,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:33,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:34,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:34,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:34,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:34,095 INFO L85 PathProgramCache]: Analyzing trace with hash 241018694, now seen corresponding path program 1 times [2023-11-06 22:09:34,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:34,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995202872] [2023-11-06 22:09:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:34,097 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:34,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:09:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:34,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:09:34,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:34,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:09:34,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995202872] [2023-11-06 22:09:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995202872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:09:34,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:09:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:09:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777557075] [2023-11-06 22:09:34,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:09:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:09:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:09:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:09:34,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 369 [2023-11-06 22:09:34,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:34,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:34,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 369 [2023-11-06 22:09:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:35,050 INFO L124 PetriNetUnfolderBase]: 1366/1897 cut-off events. [2023-11-06 22:09:35,050 INFO L125 PetriNetUnfolderBase]: For 4757/5151 co-relation queries the response was YES. [2023-11-06 22:09:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1897 events. 1366/1897 cut-off events. For 4757/5151 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7540 event pairs, 817 based on Foata normal form. 385/1974 useless extension candidates. Maximal degree in co-relation 6547. Up to 1775 conditions per place. [2023-11-06 22:09:35,060 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 74 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-11-06 22:09:35,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 562 flow [2023-11-06 22:09:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:09:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:09:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2023-11-06 22:09:35,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45907859078590785 [2023-11-06 22:09:35,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2023-11-06 22:09:35,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2023-11-06 22:09:35,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:35,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2023-11-06 22:09:35,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:35,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:35,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 369.0) internal successors, (2214), 6 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:35,071 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 340 flow. Second operand 5 states and 847 transitions. [2023-11-06 22:09:35,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 562 flow [2023-11-06 22:09:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 525 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:35,077 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 329 flow [2023-11-06 22:09:35,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-06 22:09:35,078 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2023-11-06 22:09:35,078 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 329 flow [2023-11-06 22:09:35,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:35,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:35,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:35,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:35,290 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:35,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1921100683, now seen corresponding path program 1 times [2023-11-06 22:09:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145128836] [2023-11-06 22:09:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:35,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:35,292 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:35,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:09:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:35,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:09:35,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:35,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:09:35,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,613 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:35,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:35,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:35,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:35,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:09:36,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:36,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145128836] [2023-11-06 22:09:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145128836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:36,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:36,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:09:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462624275] [2023-11-06 22:09:36,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:36,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:40,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 369 [2023-11-06 22:09:40,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 329 flow. Second operand has 10 states, 10 states have (on average 154.8) internal successors, (1548), 10 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:40,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:40,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 369 [2023-11-06 22:09:40,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:42,147 INFO L124 PetriNetUnfolderBase]: 3019/3973 cut-off events. [2023-11-06 22:09:42,147 INFO L125 PetriNetUnfolderBase]: For 4208/4356 co-relation queries the response was YES. [2023-11-06 22:09:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13763 conditions, 3973 events. 3019/3973 cut-off events. For 4208/4356 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16990 event pairs, 780 based on Foata normal form. 146/3547 useless extension candidates. Maximal degree in co-relation 13733. Up to 2205 conditions per place. [2023-11-06 22:09:42,176 INFO L140 encePairwiseOnDemand]: 363/369 looper letters, 121 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-06 22:09:42,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 146 transitions, 1012 flow [2023-11-06 22:09:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:09:42,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:09:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1305 transitions. [2023-11-06 22:09:42,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2023-11-06 22:09:42,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1305 transitions. [2023-11-06 22:09:42,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1305 transitions. [2023-11-06 22:09:42,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:42,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1305 transitions. [2023-11-06 22:09:42,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 163.125) internal successors, (1305), 8 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 369.0) internal successors, (3321), 9 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 369.0) internal successors, (3321), 9 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,192 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 329 flow. Second operand 8 states and 1305 transitions. [2023-11-06 22:09:42,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 146 transitions, 1012 flow [2023-11-06 22:09:42,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 146 transitions, 1007 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:09:42,209 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 421 flow [2023-11-06 22:09:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2023-11-06 22:09:42,210 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 32 predicate places. [2023-11-06 22:09:42,210 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 421 flow [2023-11-06 22:09:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 154.8) internal successors, (1548), 10 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:42,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:42,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:42,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-06 22:09:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:42,423 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:42,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash 580708408, now seen corresponding path program 1 times [2023-11-06 22:09:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:42,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007480415] [2023-11-06 22:09:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:09:42,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:42,425 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:42,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:09:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:09:42,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:09:42,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:42,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:09:42,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:42,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:42,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,743 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:42,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:42,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:42,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:42,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:42,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:43,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:43,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:43,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007480415] [2023-11-06 22:09:43,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007480415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:43,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:43,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:09:43,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624898657] [2023-11-06 22:09:43,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:43,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:09:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:09:43,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:09:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 369 [2023-11-06 22:09:48,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 421 flow. Second operand has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:48,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:09:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 369 [2023-11-06 22:09:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:09:53,994 INFO L124 PetriNetUnfolderBase]: 7436/9839 cut-off events. [2023-11-06 22:09:53,994 INFO L125 PetriNetUnfolderBase]: For 29325/30509 co-relation queries the response was YES. [2023-11-06 22:09:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40515 conditions, 9839 events. 7436/9839 cut-off events. For 29325/30509 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 43843 event pairs, 3593 based on Foata normal form. 1158/10398 useless extension candidates. Maximal degree in co-relation 40482. Up to 3531 conditions per place. [2023-11-06 22:09:54,148 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 199 selfloop transitions, 17 changer transitions 0/219 dead transitions. [2023-11-06 22:09:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 219 transitions, 1674 flow [2023-11-06 22:09:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:09:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:09:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1902 transitions. [2023-11-06 22:09:54,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42953929539295393 [2023-11-06 22:09:54,156 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1902 transitions. [2023-11-06 22:09:54,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1902 transitions. [2023-11-06 22:09:54,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:09:54,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1902 transitions. [2023-11-06 22:09:54,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 158.5) internal successors, (1902), 12 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 369.0) internal successors, (4797), 13 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,170 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 369.0) internal successors, (4797), 13 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,171 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 421 flow. Second operand 12 states and 1902 transitions. [2023-11-06 22:09:54,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 219 transitions, 1674 flow [2023-11-06 22:09:54,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 219 transitions, 1558 flow, removed 45 selfloop flow, removed 3 redundant places. [2023-11-06 22:09:54,233 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 460 flow [2023-11-06 22:09:54,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=460, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2023-11-06 22:09:54,234 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2023-11-06 22:09:54,234 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 460 flow [2023-11-06 22:09:54,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.0) internal successors, (1500), 10 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:09:54,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:09:54,235 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:09:54,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:09:54,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:54,444 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:09:54,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:09:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -518770869, now seen corresponding path program 2 times [2023-11-06 22:09:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:09:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50014715] [2023-11-06 22:09:54,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:09:54,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:09:54,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:09:54,446 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:09:54,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:09:54,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:09:54,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:09:54,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:09:54,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:09:54,575 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:09:54,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:54,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:09:54,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:09:54,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:09:54,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:09:54,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:09:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:55,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:09:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:09:56,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:09:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50014715] [2023-11-06 22:09:56,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50014715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:09:56,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:09:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-06 22:09:56,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188484914] [2023-11-06 22:09:56,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:09:56,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:09:56,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:09:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:09:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:10:09,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 369 [2023-11-06 22:10:09,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 460 flow. Second operand has 18 states, 18 states have (on average 149.11111111111111) internal successors, (2684), 18 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:09,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:09,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 369 [2023-11-06 22:10:09,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:17,122 INFO L124 PetriNetUnfolderBase]: 6371/8385 cut-off events. [2023-11-06 22:10:17,122 INFO L125 PetriNetUnfolderBase]: For 22335/23524 co-relation queries the response was YES. [2023-11-06 22:10:17,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35476 conditions, 8385 events. 6371/8385 cut-off events. For 22335/23524 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 38567 event pairs, 2373 based on Foata normal form. 1229/8814 useless extension candidates. Maximal degree in co-relation 35441. Up to 3384 conditions per place. [2023-11-06 22:10:17,183 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 251 selfloop transitions, 27 changer transitions 0/283 dead transitions. [2023-11-06 22:10:17,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 283 transitions, 2228 flow [2023-11-06 22:10:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:10:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:10:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2384 transitions. [2023-11-06 22:10:17,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43071364046973803 [2023-11-06 22:10:17,244 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2384 transitions. [2023-11-06 22:10:17,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2384 transitions. [2023-11-06 22:10:17,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:17,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2384 transitions. [2023-11-06 22:10:17,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 158.93333333333334) internal successors, (2384), 15 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:17,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 369.0) internal successors, (5904), 16 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:17,258 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 369.0) internal successors, (5904), 16 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:17,258 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 460 flow. Second operand 15 states and 2384 transitions. [2023-11-06 22:10:17,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 283 transitions, 2228 flow [2023-11-06 22:10:17,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 283 transitions, 2168 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-06 22:10:17,349 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 604 flow [2023-11-06 22:10:17,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=604, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2023-11-06 22:10:17,350 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2023-11-06 22:10:17,351 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 604 flow [2023-11-06 22:10:17,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 149.11111111111111) internal successors, (2684), 18 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:17,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:17,352 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:17,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:17,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:17,565 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:10:17,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1067253074, now seen corresponding path program 2 times [2023-11-06 22:10:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408979507] [2023-11-06 22:10:17,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:17,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:17,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:17,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:10:17,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:10:17,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:10:17,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:17,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:10:17,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:17,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:10:17,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:17,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:17,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:17,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:10:17,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:17,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:17,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:17,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:17,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:17,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:17,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:17,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:18,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:18,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:18,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:18,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:19,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408979507] [2023-11-06 22:10:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408979507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:19,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-11-06 22:10:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599957834] [2023-11-06 22:10:19,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:10:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:10:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:10:34,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 369 [2023-11-06 22:10:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 604 flow. Second operand has 15 states, 15 states have (on average 150.53333333333333) internal successors, (2258), 15 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:34,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 369 [2023-11-06 22:10:34,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:37,670 INFO L124 PetriNetUnfolderBase]: 6669/8773 cut-off events. [2023-11-06 22:10:37,670 INFO L125 PetriNetUnfolderBase]: For 25015/25719 co-relation queries the response was YES. [2023-11-06 22:10:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39167 conditions, 8773 events. 6669/8773 cut-off events. For 25015/25719 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 39509 event pairs, 3458 based on Foata normal form. 624/8459 useless extension candidates. Maximal degree in co-relation 39127. Up to 7927 conditions per place. [2023-11-06 22:10:37,757 INFO L140 encePairwiseOnDemand]: 360/369 looper letters, 117 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2023-11-06 22:10:37,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 139 transitions, 1109 flow [2023-11-06 22:10:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:10:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:10:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1421 transitions. [2023-11-06 22:10:37,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278831677205661 [2023-11-06 22:10:37,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1421 transitions. [2023-11-06 22:10:37,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1421 transitions. [2023-11-06 22:10:37,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:37,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1421 transitions. [2023-11-06 22:10:37,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.88888888888889) internal successors, (1421), 9 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:37,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:37,768 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 369.0) internal successors, (3690), 10 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:37,768 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 604 flow. Second operand 9 states and 1421 transitions. [2023-11-06 22:10:37,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 139 transitions, 1109 flow [2023-11-06 22:10:37,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 139 transitions, 1086 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:37,878 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 690 flow [2023-11-06 22:10:37,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2023-11-06 22:10:37,879 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 61 predicate places. [2023-11-06 22:10:37,880 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 690 flow [2023-11-06 22:10:37,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 150.53333333333333) internal successors, (2258), 15 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:37,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:37,881 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-11-06 22:10:37,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:38,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:38,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:10:38,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash -547551679, now seen corresponding path program 3 times [2023-11-06 22:10:38,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650623572] [2023-11-06 22:10:38,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:10:38,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:38,097 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:10:38,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:10:38,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:10:38,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:38,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:10:38,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:38,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:10:38,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:10:38,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,649 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:39,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:41,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:41,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650623572] [2023-11-06 22:10:41,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650623572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:41,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:41,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-06 22:10:41,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609189331] [2023-11-06 22:10:41,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:10:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:10:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:11:02,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 369 [2023-11-06 22:11:02,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 690 flow. Second operand has 24 states, 24 states have (on average 160.0) internal successors, (3840), 24 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:02,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:02,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 369 [2023-11-06 22:11:02,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:16,017 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([629] L64-5-->L64-5: Formula: (let ((.cse1 (bvmul (_ bv4 32) v_thread3Thread1of1ForFork2_~i~2_44))) (let ((.cse2 (bvadd v_~A~0.offset_35 .cse1)) (.cse3 (bvadd v_~A~0.offset_35 (_ bv4 32) .cse1))) (and (bvslt v_thread3Thread1of1ForFork2_~i~2_44 v_~N~0_47) (= (_ bv0 1) (bvadd (select |v_#valid_178| v_~A~0.base_44) (_ bv1 1))) (= v_~sum3~0_21 (bvadd v_~sum3~0_22 (let ((.cse0 (select |v_#memory_int_75| v_~A~0.base_44))) (concat (concat (concat (select .cse0 (bvadd v_~A~0.offset_35 .cse1 (_ bv3 32))) (select .cse0 (bvadd v_~A~0.offset_35 (_ bv2 32) .cse1))) (select .cse0 (bvadd v_~A~0.offset_35 .cse1 (_ bv1 32)))) (select .cse0 .cse2))))) (= v_thread3Thread1of1ForFork2_~i~2_43 (bvadd v_thread3Thread1of1ForFork2_~i~2_44 (_ bv1 32))) (bvule .cse2 .cse3) (bvule .cse3 (select |v_#length_135| v_~A~0.base_44))))) InVars {~A~0.base=v_~A~0.base_44, ~A~0.offset=v_~A~0.offset_35, #valid=|v_#valid_178|, #memory_int=|v_#memory_int_75|, ~sum3~0=v_~sum3~0_22, #length=|v_#length_135|, ~N~0=v_~N~0_47, thread3Thread1of1ForFork2_~i~2=v_thread3Thread1of1ForFork2_~i~2_44} OutVars{~A~0.base=v_~A~0.base_44, ~A~0.offset=v_~A~0.offset_35, #valid=|v_#valid_178|, thread3Thread1of1ForFork2_#t~post5=|v_thread3Thread1of1ForFork2_#t~post5_17|, #memory_int=|v_#memory_int_75|, ~sum3~0=v_~sum3~0_21, #length=|v_#length_135|, ~N~0=v_~N~0_47, thread3Thread1of1ForFork2_~i~2=v_thread3Thread1of1ForFork2_~i~2_43, thread3Thread1of1ForFork2_#t~mem6=|v_thread3Thread1of1ForFork2_#t~mem6_19|} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post5, ~sum3~0, thread3Thread1of1ForFork2_~i~2, thread3Thread1of1ForFork2_#t~mem6][53], [Black: 636#(and (exists ((~N~0 (_ BitVec 32))) (and (bvsle ~M~0 ~N~0) (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (bvule ~N~0 (_ bv1073741823 32)))) (or (not (bvslt thread2Thread1of1ForFork0_~i~1 ~M~0)) (and (bvule (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv4 32))) (bvule (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv4 32)) (select |#length| ~A~0.base)))) (= ~A~0.offset (_ bv0 32)) (bvsge ~M~0 (_ bv0 32))), 370#(= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))), 2#L64-5true, 63#thread2EXITtrue, Black: 714#(and (or (and (bvule (bvadd (_ bv4 32) ~A~0.offset (bvmul (_ bv4 32) ~M~0)) (select |#length| ~A~0.base)) (bvule (bvadd ~A~0.offset (bvmul (_ bv4 32) ~M~0)) (bvadd (_ bv4 32) ~A~0.offset (bvmul (_ bv4 32) ~M~0)))) (not (bvslt ~M~0 ~N~0))) (or (not (bvslt thread3Thread1of1ForFork2_~i~2 ~N~0)) (and (bvule (bvadd ~A~0.offset (bvmul thread3Thread1of1ForFork2_~i~2 (_ bv4 32))) (bvadd (_ bv4 32) ~A~0.offset (bvmul thread3Thread1of1ForFork2_~i~2 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) ~A~0.offset (bvmul thread3Thread1of1ForFork2_~i~2 (_ bv4 32))) (select |#length| ~A~0.base))))), 208#(or (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t2~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))))) (and (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t1~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|)))))), 895#true, Black: 536#(and (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (= ~A~0.offset (_ bv0 32)) (or (and (bvule (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32))) (select |#length| ~A~0.base))) (not (bvslt thread1Thread1of1ForFork1_~i~0 ~N~0))) (bvule ~N~0 (_ bv1073741823 32))), Black: 534#(and (or (not (bvslt (bvadd thread1Thread1of1ForFork1_~i~0 (_ bv1 32)) ~N~0)) (and (bvule (bvadd (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) (_ bv8 32)) (select |#length| ~A~0.base)) (bvule (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32))) (bvadd (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) (_ bv8 32)))) (not (bvslt thread1Thread1of1ForFork1_~i~0 ~N~0))) (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (= ~A~0.offset (_ bv0 32)) (bvule ~N~0 (_ bv1073741823 32)) (or (bvule (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)))) (not (bvslt thread1Thread1of1ForFork1_~i~0 ~N~0)))), 296#(= (bvadd (select |#valid| ~A~0.base) (_ bv1 1)) (_ bv0 1)), Black: 508#(and (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (bvslt (_ bv0 32) ~N~0) (= ~A~0.offset (_ bv0 32)) (= thread1Thread1of1ForFork1_~i~0 (_ bv1 32)) (bvule ~N~0 (_ bv1073741823 32))), 446#(and (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|)) (= |ULTIMATE.start_main_~#t3~0#1.offset| (_ bv0 32))), Black: 795#(and (or (and (bvule (bvadd (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset (_ bv12 32)) (bvadd (_ bv16 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset)) (bvule (bvadd (_ bv16 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset) (select |#length| ~A~0.base))) (not (bvslt (bvadd thread1Thread1of1ForFork1_~i~0 (_ bv3 32)) ~N~0))) (or (not (bvslt (_ bv4 32) ~N~0)) (and (bvule (bvadd (_ bv16 32) ~A~0.offset) (bvadd ~A~0.offset (_ bv20 32))) (bvule (bvadd ~A~0.offset (_ bv20 32)) (select |#length| ~A~0.base))))), Black: 801#(and (or (and (bvule (bvadd (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset) (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset)) (bvule (bvadd (_ bv4 32) (bvmul thread1Thread1of1ForFork1_~i~0 (_ bv4 32)) ~A~0.offset) (select |#length| ~A~0.base))) (not (bvslt thread1Thread1of1ForFork1_~i~0 ~N~0))) (or (not (bvslt (_ bv4 32) ~N~0)) (and (bvule (bvadd (_ bv16 32) ~A~0.offset) (bvadd ~A~0.offset (_ bv20 32))) (bvule 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|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1)))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t3~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) (_ bv1 1))) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t3~0#1.base|))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_main_~#t1~0#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) (_ bv1 1))))) (and (= (_ bv0 1) (bvadd (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) (_ bv1 1))) (exists ((|ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base| (_ BitVec 32))) (and (= (bvadd (select |#valid| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (_ bv1 1)) (_ bv0 1)) (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))))), Black: 351#(and (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), Black: 358#(and (= thread1Thread1of1ForFork1_~i~0 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ BitVec 32))) (and (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|) (select |#length| ~A~0.base)) (not (bvslt (_ bv0 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_91|))))), Black: 433#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 427#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd (_ bv3 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (not (bvslt (bvadd (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (_ bv20 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (_ bv20 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 405#(and (= (_ bv0 32) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (= (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (= (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) (bvule |ULTIMATE.start_create_fresh_uint_array_~size#1| (_ bv1073741823 32))), Black: 431#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 429#(and (or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)))) (not (bvslt (bvadd (_ bv2 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset| (_ bv12 32)) (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv16 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd (_ bv3 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~size#1|))) (or (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)) (bvule (bvadd (_ bv8 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|))) (not (bvslt (bvadd |ULTIMATE.start_create_fresh_uint_array_~i~3#1| (_ bv1 32)) |ULTIMATE.start_create_fresh_uint_array_~size#1|)))), Black: 409#(or (not (bvslt |ULTIMATE.start_create_fresh_uint_array_~i~3#1| |ULTIMATE.start_create_fresh_uint_array_~size#1|)) (and (bvule (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (select |#length| |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.base|)) (bvule (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|) (bvadd (_ bv4 32) (bvmul (_ bv4 32) |ULTIMATE.start_create_fresh_uint_array_~i~3#1|) |ULTIMATE.start_create_fresh_uint_array_~arr~0#1.offset|)))), 64#L85-1true, 384#true, Black: 838#(and (= thread2Thread1of1ForFork0_~i~1 (_ bv1 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ BitVec 32))) (and (not (bvslt (_ bv1 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|)) (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|) (select |#length| ~A~0.base))))), Black: 571#(and (bvsle ~M~0 ~N~0) (bvsge thread3Thread1of1ForFork2_~i~2 (_ bv0 32)) (bvsge ~M~0 (_ bv0 32)) (bvsle thread3Thread1of1ForFork2_~i~2 ~N~0) (not (bvslt (_ bv0 32) ~N~0))), 279#(and (= |ULTIMATE.start_main_~#t2~0#1.offset| (_ bv0 32)) (exists ((|#StackHeapBarrier| (_ BitVec 32))) (and (not (= |#StackHeapBarrier| (_ bv0 32))) (bvult |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|))) (= (_ bv4 32) (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|))), Black: 834#(and (= thread2Thread1of1ForFork0_~i~1 (_ bv0 32)) (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ BitVec 32))) (and (not (bvslt (_ bv1 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|)) (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|) (select |#length| ~A~0.base))))), Black: 634#(and (exists ((~N~0 (_ BitVec 32))) (and (bvsle ~M~0 ~N~0) (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (bvule ~N~0 (_ bv1073741823 32)))) (or (not (bvslt thread2Thread1of1ForFork0_~i~1 ~M~0)) (and (bvule (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv4 32))) (bvule (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv4 32)) (select |#length| ~A~0.base)))) (= ~A~0.offset (_ bv0 32)) (or (not (bvslt (bvadd thread2Thread1of1ForFork0_~i~1 (_ bv1 32)) ~M~0)) (and (bvule (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv8 32)) (select |#length| ~A~0.base)) (bvule (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv4 32)) (bvadd (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)) (_ bv8 32)))) (not (bvslt thread2Thread1of1ForFork0_~i~1 ~M~0))) (bvsge ~M~0 (_ bv0 32))), 821#(and (= ~A~0.offset (_ bv0 32)) (exists ((|v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ BitVec 32))) (and (not (bvslt (_ bv1 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|)) (bvule |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95| (_ bv1073741823 32)) (= (bvmul (_ bv4 32) |v_ULTIMATE.start_create_fresh_uint_array_~size#1_95|) (select |#length| ~A~0.base))))), Black: 604#(and (= thread2Thread1of1ForFork0_~i~1 (_ bv1 32)) (exists ((~N~0 (_ BitVec 32))) (and (bvsle ~M~0 ~N~0) (= (bvmul (_ bv4 32) ~N~0) (select |#length| ~A~0.base)) (bvule ~N~0 (_ bv1073741823 32)))) (bvslt (_ bv0 32) ~M~0) (= ~A~0.offset (_ bv0 32)))]) [2023-11-06 22:11:16,017 INFO L294 olderBase$Statistics]: this new event has 15 ancestors and is cut-off event [2023-11-06 22:11:16,017 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:11:16,017 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2023-11-06 22:11:16,017 INFO L297 olderBase$Statistics]: existing Event has 14 ancestors and is cut-off event [2023-11-06 22:11:23,397 INFO L124 PetriNetUnfolderBase]: 5977/7848 cut-off events. [2023-11-06 22:11:23,397 INFO L125 PetriNetUnfolderBase]: For 31938/33207 co-relation queries the response was YES. [2023-11-06 22:11:23,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36954 conditions, 7848 events. 5977/7848 cut-off events. For 31938/33207 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 35617 event pairs, 3154 based on Foata normal form. 1208/8252 useless extension candidates. Maximal degree in co-relation 36910. Up to 7709 conditions per place. [2023-11-06 22:11:23,466 INFO L140 encePairwiseOnDemand]: 365/369 looper letters, 65 selfloop transitions, 45 changer transitions 0/120 dead transitions. [2023-11-06 22:11:23,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 120 transitions, 1078 flow [2023-11-06 22:11:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:11:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:11:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3897 transitions. [2023-11-06 22:11:23,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400406504065041 [2023-11-06 22:11:23,471 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3897 transitions. [2023-11-06 22:11:23,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3897 transitions. [2023-11-06 22:11:23,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:23,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3897 transitions. [2023-11-06 22:11:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 162.375) internal successors, (3897), 24 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 369.0) internal successors, (9225), 25 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,486 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 369.0) internal successors, (9225), 25 states have internal predecessors, (9225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,486 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 690 flow. Second operand 24 states and 3897 transitions. [2023-11-06 22:11:23,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 120 transitions, 1078 flow [2023-11-06 22:11:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 120 transitions, 1070 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:23,636 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1004 flow [2023-11-06 22:11:23,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1004, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2023-11-06 22:11:23,636 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 94 predicate places. [2023-11-06 22:11:23,637 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1004 flow [2023-11-06 22:11:23,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 160.0) internal successors, (3840), 24 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:23,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:23,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:23,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:23,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:23,839 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:11:23,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash 846397221, now seen corresponding path program 1 times [2023-11-06 22:11:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120053066] [2023-11-06 22:11:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:23,841 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:11:23,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:11:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:23,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:11:23,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:24,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:11:24,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,035 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:24,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:24,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:24,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:11:24,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:24,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:24,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,331 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:24,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:24,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:26,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:26,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120053066] [2023-11-06 22:11:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120053066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:26,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-06 22:11:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162867818] [2023-11-06 22:11:26,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:26,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:11:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:11:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:11:39,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 369 [2023-11-06 22:11:39,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1004 flow. Second operand has 14 states, 14 states have (on average 148.71428571428572) internal successors, (2082), 14 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:39,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:39,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 369 [2023-11-06 22:11:39,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:51,826 INFO L124 PetriNetUnfolderBase]: 14355/18757 cut-off events. [2023-11-06 22:11:51,826 INFO L125 PetriNetUnfolderBase]: For 67310/69495 co-relation queries the response was YES. [2023-11-06 22:11:51,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86852 conditions, 18757 events. 14355/18757 cut-off events. For 67310/69495 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 89557 event pairs, 5488 based on Foata normal form. 2014/19626 useless extension candidates. Maximal degree in co-relation 86795. Up to 7283 conditions per place. [2023-11-06 22:11:52,067 INFO L140 encePairwiseOnDemand]: 361/369 looper letters, 343 selfloop transitions, 35 changer transitions 0/384 dead transitions. [2023-11-06 22:11:52,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 384 transitions, 3492 flow [2023-11-06 22:11:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:11:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:11:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2674 transitions. [2023-11-06 22:11:52,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262713215367448 [2023-11-06 22:11:52,071 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2674 transitions. [2023-11-06 22:11:52,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2674 transitions. [2023-11-06 22:11:52,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:52,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2674 transitions. [2023-11-06 22:11:52,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 157.2941176470588) internal successors, (2674), 17 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,079 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,079 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1004 flow. Second operand 17 states and 2674 transitions. [2023-11-06 22:11:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 384 transitions, 3492 flow [2023-11-06 22:11:52,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 384 transitions, 3350 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-06 22:11:52,324 INFO L231 Difference]: Finished difference. Result has 156 places, 136 transitions, 1107 flow [2023-11-06 22:11:52,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1107, PETRI_PLACES=156, PETRI_TRANSITIONS=136} [2023-11-06 22:11:52,325 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2023-11-06 22:11:52,325 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 136 transitions, 1107 flow [2023-11-06 22:11:52,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 148.71428571428572) internal successors, (2082), 14 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:52,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:52,326 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1] [2023-11-06 22:11:52,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:52,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:52,528 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:11:52,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1122278015, now seen corresponding path program 3 times [2023-11-06 22:11:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:52,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381907473] [2023-11-06 22:11:52,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:52,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:52,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:52,530 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:11:52,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:11:52,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:11:52,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:52,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:11:52,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:52,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:11:52,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:52,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,926 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:11:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:52,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:53,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:53,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:53,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:53,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,116 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:53,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:53,249 INFO L351 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 13 treesize of output 9 [2023-11-06 22:11:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:11:53,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:11:53,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381907473] [2023-11-06 22:11:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381907473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:53,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:11:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278058356] [2023-11-06 22:11:53,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:11:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:11:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:11:57,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 369 [2023-11-06 22:11:57,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 136 transitions, 1107 flow. Second operand has 16 states, 16 states have (on average 152.25) internal successors, (2436), 16 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:57,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:57,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 369 [2023-11-06 22:11:57,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:02,726 INFO L124 PetriNetUnfolderBase]: 11652/15258 cut-off events. [2023-11-06 22:12:02,726 INFO L125 PetriNetUnfolderBase]: For 97183/99795 co-relation queries the response was YES. [2023-11-06 22:12:02,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80568 conditions, 15258 events. 11652/15258 cut-off events. For 97183/99795 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 73502 event pairs, 5885 based on Foata normal form. 2641/17418 useless extension candidates. Maximal degree in co-relation 80505. Up to 12926 conditions per place. [2023-11-06 22:12:02,935 INFO L140 encePairwiseOnDemand]: 362/369 looper letters, 249 selfloop transitions, 19 changer transitions 0/276 dead transitions. [2023-11-06 22:12:02,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 276 transitions, 2625 flow [2023-11-06 22:12:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:12:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:12:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2087 transitions. [2023-11-06 22:12:02,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350635814050448 [2023-11-06 22:12:02,939 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2087 transitions. [2023-11-06 22:12:02,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2087 transitions. [2023-11-06 22:12:02,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:02,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2087 transitions. [2023-11-06 22:12:02,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.53846153846155) internal successors, (2087), 13 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 369.0) internal successors, (5166), 14 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,948 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 369.0) internal successors, (5166), 14 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,949 INFO L175 Difference]: Start difference. First operand has 156 places, 136 transitions, 1107 flow. Second operand 13 states and 2087 transitions. [2023-11-06 22:12:02,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 276 transitions, 2625 flow [2023-11-06 22:12:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 276 transitions, 2530 flow, removed 35 selfloop flow, removed 8 redundant places. [2023-11-06 22:12:03,509 INFO L231 Difference]: Finished difference. Result has 164 places, 140 transitions, 1143 flow [2023-11-06 22:12:03,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1143, PETRI_PLACES=164, PETRI_TRANSITIONS=140} [2023-11-06 22:12:03,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2023-11-06 22:12:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 140 transitions, 1143 flow [2023-11-06 22:12:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 152.25) internal successors, (2436), 16 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:03,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:03,511 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1] [2023-11-06 22:12:03,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,711 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 22:12:03,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1875598413, now seen corresponding path program 4 times [2023-11-06 22:12:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273980932] [2023-11-06 22:12:03,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:12:03,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:03,713 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:03,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ca43a2-1fef-4fa2-b2df-938b00b3bcf8/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:12:03,847 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:12:03,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:03,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:12:03,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:12:03,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:03,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:03,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:03,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:03,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:03,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,949 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:03,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,965 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:03,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:03,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:03,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:04,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:04,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:12:04,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,131 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:04,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:04,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,164 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,183 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:12:04,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:04,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,202 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:12:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:04,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:06,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273980932] [2023-11-06 22:12:06,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273980932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:06,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2023-11-06 22:12:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99029244] [2023-11-06 22:12:06,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:12:06,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:12:06,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462