./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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_081dc741-819e-4b0f-a6fa-acb85da8119c/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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:10:56,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:10:56,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:10:56,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:10:56,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:10:56,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:10:56,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:10:56,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:10:56,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:10:56,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:10:56,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:10:56,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:10:56,478 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:10:56,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:10:56,480 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:10:56,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:10:56,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:10:56,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:10:56,482 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:10:56,482 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:10:56,483 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:10:56,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:10:56,484 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:10:56,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:10:56,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:10:56,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:10:56,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:10:56,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:10:56,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:10:56,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:56,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:10:56,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:10:56,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:10:56,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:10:56,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:10:56,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:10:56,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:10:56,501 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:10:56,501 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_081dc741-819e-4b0f-a6fa-acb85da8119c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2023-11-06 22:10:56,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:10:56,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:10:56,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:10:56,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:10:56,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:10:56,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:10:59,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:00,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:00,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:11:00,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/b01943b39/2d202f59a0df403991de1c130168dc18/FLAG7bd72f632 [2023-11-06 22:11:00,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/b01943b39/2d202f59a0df403991de1c130168dc18 [2023-11-06 22:11:00,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:00,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:00,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:00,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:00,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:00,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:00" (1/1) ... [2023-11-06 22:11:00,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e47c09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:00, skipping insertion in model container [2023-11-06 22:11:00,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:00" (1/1) ... [2023-11-06 22:11:00,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:00,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:00,466 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 22:11:00,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75c7a445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:00, skipping insertion in model container [2023-11-06 22:11:00,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:00,468 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:11:00,470 INFO L158 Benchmark]: Toolchain (without parser) took 319.70ms. Allocated memory is still 132.1MB. Free memory was 88.0MB in the beginning and 78.0MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:11:00,471 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 132.1MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:11:00,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.45ms. Allocated memory is still 132.1MB. Free memory was 88.0MB in the beginning and 78.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:11:00,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 132.1MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.45ms. Allocated memory is still 132.1MB. Free memory was 88.0MB in the beginning and 78.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: 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_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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_081dc741-819e-4b0f-a6fa-acb85da8119c/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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:03,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:03,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:11:03,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:03,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:03,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:03,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:03,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:03,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:03,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:03,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:03,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:03,284 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:03,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:03,286 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:03,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:03,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:03,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:03,288 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:11:03,289 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:11:03,289 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:11:03,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:03,290 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:11:03,291 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:11:03,291 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:11:03,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:11:03,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:03,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:03,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:03,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:03,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:03,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:03,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:03,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:03,296 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:11:03,297 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:11:03,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:03,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:03,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:03,298 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:11:03,299 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:03,299 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_081dc741-819e-4b0f-a6fa-acb85da8119c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2023-11-06 22:11:03,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:03,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:03,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:03,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:03,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:03,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:11:06,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:07,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:07,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:11:07,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/59094c92e/19db975a0f8b417989a50892f3a96b22/FLAGc7fb96b2f [2023-11-06 22:11:07,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/data/59094c92e/19db975a0f8b417989a50892f3a96b22 [2023-11-06 22:11:07,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:07,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:07,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:07,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:07,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:07,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c823f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07, skipping insertion in model container [2023-11-06 22:11:07,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:07,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:07,555 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:11:07,570 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:07,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:07,613 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:07,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:07,688 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:07,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07 WrapperNode [2023-11-06 22:11:07,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:07,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:07,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:07,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:07,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,769 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 177 [2023-11-06 22:11:07,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:07,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:07,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:07,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:07,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:07,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:07,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:07,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:07,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (1/1) ... [2023-11-06 22:11:07,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:07,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:07,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:07,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:11:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:11:07,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:11:07,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:11:07,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:11:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:11:07,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:11:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:11:07,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:07,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:07,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:11:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:11:07,973 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 22:11:08,099 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:08,101 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:08,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:08,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:08,757 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:11:08,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:08 BoogieIcfgContainer [2023-11-06 22:11:08,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:08,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:08,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:08,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:08,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:07" (1/3) ... [2023-11-06 22:11:08,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff54890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:08, skipping insertion in model container [2023-11-06 22:11:08,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:07" (2/3) ... [2023-11-06 22:11:08,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff54890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:08, skipping insertion in model container [2023-11-06 22:11:08,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:08" (3/3) ... [2023-11-06 22:11:08,769 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-06 22:11:08,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:08,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 22:11:08,790 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:11:08,951 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:11:08,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 245 transitions, 504 flow [2023-11-06 22:11:09,114 INFO L124 PetriNetUnfolderBase]: 19/243 cut-off events. [2023-11-06 22:11:09,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:11:09,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 243 events. 19/243 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 376 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2023-11-06 22:11:09,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 245 transitions, 504 flow [2023-11-06 22:11:09,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 238 transitions, 488 flow [2023-11-06 22:11:09,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:11:09,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 238 transitions, 488 flow [2023-11-06 22:11:09,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 238 transitions, 488 flow [2023-11-06 22:11:09,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 238 transitions, 488 flow [2023-11-06 22:11:09,270 INFO L124 PetriNetUnfolderBase]: 19/238 cut-off events. [2023-11-06 22:11:09,270 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:11:09,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 238 events. 19/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 371 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2023-11-06 22:11:09,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 5676 [2023-11-06 22:11:42,594 INFO L134 LiptonReduction]: Checked pairs total: 8770 [2023-11-06 22:11:42,595 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-11-06 22:11:42,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:42,633 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;@19e8eb77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:42,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-06 22:11:42,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:42,636 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:11:42,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:42,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:42,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:11:42,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:42,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 30617, now seen corresponding path program 1 times [2023-11-06 22:11:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368527573] [2023-11-06 22:11:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:42,658 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 22:11:42,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:42,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:42,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:11:42,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:42,901 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:11:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:42,915 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 22:11:42,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:42,943 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 22:11:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:42,951 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 22:11:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:42,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:42,993 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 22:11:43,000 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 22:11:43,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:43,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:43,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368527573] [2023-11-06 22:11:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368527573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:43,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415336052] [2023-11-06 22:11:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:43,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 519 [2023-11-06 22:11:43,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 22:11:43,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:43,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 519 [2023-11-06 22:11:43,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:43,916 INFO L124 PetriNetUnfolderBase]: 837/1327 cut-off events. [2023-11-06 22:11:43,917 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:11:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 1327 events. 837/1327 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6241 event pairs, 679 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 2541. Up to 1317 conditions per place. [2023-11-06 22:11:43,936 INFO L140 encePairwiseOnDemand]: 508/519 looper letters, 42 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-06 22:11:43,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 198 flow [2023-11-06 22:11:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-11-06 22:11:43,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215157353885677 [2023-11-06 22:11:43,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-11-06 22:11:43,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-11-06 22:11:43,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:43,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-11-06 22:11:43,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 22:11:43,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:43,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:43,990 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 120 flow. Second operand 3 states and 704 transitions. [2023-11-06 22:11:43,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 198 flow [2023-11-06 22:11:43,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:11:43,999 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 106 flow [2023-11-06 22:11:44,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-11-06 22:11:44,006 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2023-11-06 22:11:44,006 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 106 flow [2023-11-06 22:11:44,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 22:11:44,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:44,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:11:44,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:44,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:44,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 30616, now seen corresponding path program 1 times [2023-11-06 22:11:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:44,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264616517] [2023-11-06 22:11:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:44,221 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 22:11:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:44,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:44,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:44,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:11:44,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:44,341 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 22:11:44,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:44,364 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 22:11:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:44,375 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 22:11:44,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:44,382 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 22:11:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:44,395 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 22:11:44,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:44,402 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 22:11:44,413 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 22:11:44,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:44,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:44,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264616517] [2023-11-06 22:11:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264616517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:44,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26613275] [2023-11-06 22:11:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:44,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:44,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 519 [2023-11-06 22:11:44,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 22:11:44,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:44,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 519 [2023-11-06 22:11:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,321 INFO L124 PetriNetUnfolderBase]: 841/1333 cut-off events. [2023-11-06 22:11:45,321 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:11:45,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1333 events. 841/1333 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6299 event pairs, 679 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 2646. Up to 1326 conditions per place. [2023-11-06 22:11:45,332 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 45 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-06 22:11:45,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 228 flow [2023-11-06 22:11:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-11-06 22:11:45,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44508670520231214 [2023-11-06 22:11:45,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-11-06 22:11:45,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-11-06 22:11:45,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-11-06 22:11:45,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 22:11:45,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:45,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:45,368 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 106 flow. Second operand 3 states and 693 transitions. [2023-11-06 22:11:45,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 228 flow [2023-11-06 22:11:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:45,372 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 154 flow [2023-11-06 22:11:45,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2023-11-06 22:11:45,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-11-06 22:11:45,373 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 154 flow [2023-11-06 22:11:45,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 22:11:45,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:45,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:45,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:45,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:45,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:45,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 954232, now seen corresponding path program 1 times [2023-11-06 22:11:45,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:45,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583879431] [2023-11-06 22:11:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,588 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 22:11:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:45,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:11:45,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:45,688 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 22:11:45,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:45,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583879431] [2023-11-06 22:11:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583879431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:45,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328062739] [2023-11-06 22:11:45,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:45,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 519 [2023-11-06 22:11:45,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 22:11:45,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 519 [2023-11-06 22:11:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:46,362 INFO L124 PetriNetUnfolderBase]: 837/1329 cut-off events. [2023-11-06 22:11:46,362 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:11:46,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 1329 events. 837/1329 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6276 event pairs, 679 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2661. Up to 1323 conditions per place. [2023-11-06 22:11:46,380 INFO L140 encePairwiseOnDemand]: 512/519 looper letters, 44 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-11-06 22:11:46,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 228 flow [2023-11-06 22:11:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-06 22:11:46,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4515093127809891 [2023-11-06 22:11:46,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-06 22:11:46,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-06 22:11:46,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:46,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-06 22:11:46,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 22:11:46,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:46,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:11:46,395 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 154 flow. Second operand 3 states and 703 transitions. [2023-11-06 22:11:46,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 228 flow [2023-11-06 22:11:46,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:46,398 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 132 flow [2023-11-06 22:11:46,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-11-06 22:11:46,399 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-11-06 22:11:46,399 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 132 flow [2023-11-06 22:11:46,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 22:11:46,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:46,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:11:46,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:46,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:46,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:46,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 953083, now seen corresponding path program 1 times [2023-11-06 22:11:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664636521] [2023-11-06 22:11:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:46,614 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 22:11:46,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:46,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:46,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:46,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:11:46,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:46,725 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 5 [2023-11-06 22:11:46,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:46,745 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 22:11:46,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:46,760 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 22:11:46,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:46,773 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 22:11:46,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:46,803 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 22:11:46,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:46,825 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 22:11:46,869 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 22:11:46,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:46,996 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 22:11:46,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664636521] [2023-11-06 22:11:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664636521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:46,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:11:46,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536637595] [2023-11-06 22:11:46,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:46,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:48,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 519 [2023-11-06 22:11:48,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 22:11:48,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:48,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 519 [2023-11-06 22:11:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:50,594 INFO L124 PetriNetUnfolderBase]: 849/1347 cut-off events. [2023-11-06 22:11:50,594 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:11:50,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1347 events. 849/1347 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6335 event pairs, 679 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 2697. Up to 1332 conditions per place. [2023-11-06 22:11:50,605 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 44 selfloop transitions, 22 changer transitions 0/67 dead transitions. [2023-11-06 22:11:50,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 342 flow [2023-11-06 22:11:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:11:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:11:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-11-06 22:11:50,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258188824662813 [2023-11-06 22:11:50,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-11-06 22:11:50,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-11-06 22:11:50,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:50,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-11-06 22:11:50,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states 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 22:11:50,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:11:50,628 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:11:50,628 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 132 flow. Second operand 6 states and 1326 transitions. [2023-11-06 22:11:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 342 flow [2023-11-06 22:11:50,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:50,631 INFO L231 Difference]: Finished difference. Result has 54 places, 67 transitions, 286 flow [2023-11-06 22:11:50,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=286, PETRI_PLACES=54, PETRI_TRANSITIONS=67} [2023-11-06 22:11:50,633 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-11-06 22:11:50,633 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 67 transitions, 286 flow [2023-11-06 22:11:50,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 22:11:50,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:50,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:11:50,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:50,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:50,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 916072620, now seen corresponding path program 1 times [2023-11-06 22:11:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317024987] [2023-11-06 22:11:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:50,847 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 22:11:50,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:50,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:50,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:50,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:11:50,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:50,963 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 22:11:50,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:51,003 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 22:11:51,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317024987] [2023-11-06 22:11:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317024987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:51,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:51,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-06 22:11:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593838405] [2023-11-06 22:11:51,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:51,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 519 [2023-11-06 22:11:51,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 67 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 22:11:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 519 [2023-11-06 22:11:51,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:52,263 INFO L124 PetriNetUnfolderBase]: 837/1335 cut-off events. [2023-11-06 22:11:52,263 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:11:52,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 1335 events. 837/1335 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6326 event pairs, 679 based on Foata normal form. 4/473 useless extension candidates. Maximal degree in co-relation 2672. Up to 1321 conditions per place. [2023-11-06 22:11:52,274 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 42 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-06 22:11:52,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 310 flow [2023-11-06 22:11:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:11:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:11:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2023-11-06 22:11:52,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43159922928709055 [2023-11-06 22:11:52,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1344 transitions. [2023-11-06 22:11:52,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1344 transitions. [2023-11-06 22:11:52,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:52,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1344 transitions. [2023-11-06 22:11:52,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 22:11:52,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:11:52,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:11:52,303 INFO L175 Difference]: Start difference. First operand has 54 places, 67 transitions, 286 flow. Second operand 6 states and 1344 transitions. [2023-11-06 22:11:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 310 flow [2023-11-06 22:11:52,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 294 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:52,308 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 210 flow [2023-11-06 22:11:52,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-11-06 22:11:52,309 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-11-06 22:11:52,309 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 210 flow [2023-11-06 22:11:52,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.33333333333334) internal successors, (1286), 6 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 22:11:52,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:52,310 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:11:52,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:52,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:11:52,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1667516328, now seen corresponding path program 2 times [2023-11-06 22:11:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:52,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589595436] [2023-11-06 22:11:52,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:52,524 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 22:11:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:52,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:52,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:11:52,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:52,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:52,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:52,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:52,649 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 5 [2023-11-06 22:11:52,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,668 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 22:11:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,681 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 22:11:52,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,690 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 22:11:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,712 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 22:11:52,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:52,722 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 22:11:52,878 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 22:11:52,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:53,637 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 22:11:53,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:53,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589595436] [2023-11-06 22:11:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589595436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:53,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:53,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:11:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628679223] [2023-11-06 22:11:53,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:11:53,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:53,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:11:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:01,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 519 [2023-11-06 22:12:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 22:12:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 519 [2023-11-06 22:12:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:05,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:07,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:08,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:10,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:12,547 INFO L124 PetriNetUnfolderBase]: 848/1355 cut-off events. [2023-11-06 22:12:12,547 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:12:12,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 1355 events. 848/1355 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6341 event pairs, 679 based on Foata normal form. 10/494 useless extension candidates. Maximal degree in co-relation 2708. Up to 1329 conditions per place. [2023-11-06 22:12:12,558 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 44 selfloop transitions, 30 changer transitions 0/75 dead transitions. [2023-11-06 22:12:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 483 flow [2023-11-06 22:12:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:12:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:12:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2547 transitions. [2023-11-06 22:12:12,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895953757225434 [2023-11-06 22:12:12,571 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2547 transitions. [2023-11-06 22:12:12,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2547 transitions. [2023-11-06 22:12:12,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:12,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2547 transitions. [2023-11-06 22:12:12,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.25) internal successors, (2547), 12 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 22:12:12,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 519.0) internal successors, (6747), 13 states have internal predecessors, (6747), 0 states have call successors, (0), 0 states 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 22:12:12,596 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 519.0) internal successors, (6747), 13 states have internal predecessors, (6747), 0 states have call successors, (0), 0 states 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 22:12:12,596 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 210 flow. Second operand 12 states and 2547 transitions. [2023-11-06 22:12:12,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 483 flow [2023-11-06 22:12:12,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 436 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-06 22:12:12,601 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 405 flow [2023-11-06 22:12:12,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=405, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-11-06 22:12:12,606 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2023-11-06 22:12:12,606 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 405 flow [2023-11-06 22:12:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 22:12:12,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:12,608 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-11-06 22:12:12,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:12,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:12,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1670863496, now seen corresponding path program 3 times [2023-11-06 22:12:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767468059] [2023-11-06 22:12:12,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:12:12,821 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 22:12:12,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:12,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:12,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:13,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:12:13,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:13,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:12:13,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:12:13,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:12:13,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767468059] [2023-11-06 22:12:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767468059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:13,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:13,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-06 22:12:13,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811749541] [2023-11-06 22:12:13,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:13,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:12:13,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:13,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:12:13,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:12:15,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 519 [2023-11-06 22:12:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 405 flow. Second operand has 14 states, 14 states have (on average 214.14285714285714) internal successors, (2998), 14 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states 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 22:12:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 519 [2023-11-06 22:12:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:16,191 INFO L124 PetriNetUnfolderBase]: 835/1333 cut-off events. [2023-11-06 22:12:16,192 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:12:16,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 1333 events. 835/1333 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 6305 event pairs, 679 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 2721. Up to 1317 conditions per place. [2023-11-06 22:12:16,202 INFO L140 encePairwiseOnDemand]: 512/519 looper letters, 37 selfloop transitions, 15 changer transitions 0/53 dead transitions. [2023-11-06 22:12:16,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 53 transitions, 302 flow [2023-11-06 22:12:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1758 transitions. [2023-11-06 22:12:16,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234104046242775 [2023-11-06 22:12:16,210 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1758 transitions. [2023-11-06 22:12:16,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1758 transitions. [2023-11-06 22:12:16,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:16,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1758 transitions. [2023-11-06 22:12:16,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 219.75) internal successors, (1758), 8 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:16,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:16,227 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:16,227 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 405 flow. Second operand 8 states and 1758 transitions. [2023-11-06 22:12:16,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 53 transitions, 302 flow [2023-11-06 22:12:16,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 240 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-06 22:12:16,230 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 166 flow [2023-11-06 22:12:16,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-06 22:12:16,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-11-06 22:12:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 166 flow [2023-11-06 22:12:16,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 214.14285714285714) internal successors, (2998), 14 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states 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 22:12:16,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:16,233 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1] [2023-11-06 22:12:16,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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)] Ended with exit code 0 [2023-11-06 22:12:16,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:16,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:16,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -620137940, now seen corresponding path program 2 times [2023-11-06 22:12:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:16,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913322218] [2023-11-06 22:12:16,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:16,448 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 22:12:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:16,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:16,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:16,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:12:16,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:16,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:12:16,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:16,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:16,590 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 22:12:16,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:16,608 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 22:12:16,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:16,656 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 22:12:16,671 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 22:12:16,831 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 22:12:16,831 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 12 treesize of output 18 [2023-11-06 22:12:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:17,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:17,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913322218] [2023-11-06 22:12:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913322218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:17,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708928282] [2023-11-06 22:12:17,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:12:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:12:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:12:17,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 519 [2023-11-06 22:12:17,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 0 states have call successors, (0), 0 states 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 22:12:17,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:17,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 519 [2023-11-06 22:12:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:18,321 INFO L124 PetriNetUnfolderBase]: 625/1024 cut-off events. [2023-11-06 22:12:18,321 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:12:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1024 events. 625/1024 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 4696 event pairs, 504 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 2084. Up to 1013 conditions per place. [2023-11-06 22:12:18,329 INFO L140 encePairwiseOnDemand]: 515/519 looper letters, 48 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-06 22:12:18,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 259 flow [2023-11-06 22:12:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:12:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:12:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 924 transitions. [2023-11-06 22:12:18,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44508670520231214 [2023-11-06 22:12:18,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 924 transitions. [2023-11-06 22:12:18,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 924 transitions. [2023-11-06 22:12:18,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:18,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 924 transitions. [2023-11-06 22:12:18,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.0) internal successors, (924), 4 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 22:12:18,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:18,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:18,343 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 166 flow. Second operand 4 states and 924 transitions. [2023-11-06 22:12:18,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 259 flow [2023-11-06 22:12:18,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 231 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:12:18,346 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 135 flow [2023-11-06 22:12:18,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-06 22:12:18,349 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-11-06 22:12:18,352 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 135 flow [2023-11-06 22:12:18,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 0 states have call successors, (0), 0 states 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 22:12:18,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:18,353 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1] [2023-11-06 22:12:18,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:18,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:18,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:18,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash -620137939, now seen corresponding path program 1 times [2023-11-06 22:12:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674916522] [2023-11-06 22:12:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:18,565 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 22:12:18,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:18,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:18,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:18,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:12:18,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:18,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:18,892 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:12:18,892 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 26 treesize of output 15 [2023-11-06 22:12:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:18,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:18,922 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 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:12:19,031 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:12:19,032 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 14 treesize of output 20 [2023-11-06 22:12:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:19,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:19,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:19,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674916522] [2023-11-06 22:12:19,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674916522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:19,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:19,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758636441] [2023-11-06 22:12:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:19,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:19,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:19,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:19,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 519 [2023-11-06 22:12:19,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 22:12:19,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:19,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 519 [2023-11-06 22:12:19,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:19,807 INFO L124 PetriNetUnfolderBase]: 415/715 cut-off events. [2023-11-06 22:12:19,808 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:12:19,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 715 events. 415/715 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3139 event pairs, 329 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 1454. Up to 710 conditions per place. [2023-11-06 22:12:19,813 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 47 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-06 22:12:19,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 226 flow [2023-11-06 22:12:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-11-06 22:12:19,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-11-06 22:12:19,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-11-06 22:12:19,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-11-06 22:12:19,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:19,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-11-06 22:12:19,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 22:12:19,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:19,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:19,824 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 135 flow. Second operand 3 states and 705 transitions. [2023-11-06 22:12:19,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 226 flow [2023-11-06 22:12:19,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:19,826 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 129 flow [2023-11-06 22:12:19,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-11-06 22:12:19,827 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2023-11-06 22:12:19,827 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 129 flow [2023-11-06 22:12:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 22:12:19,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:19,828 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-11-06 22:12:19,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:20,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:20,041 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:20,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1047916933, now seen corresponding path program 1 times [2023-11-06 22:12:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:20,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671582217] [2023-11-06 22:12:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:20,042 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 22:12:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:20,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:20,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:20,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:12:20,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:20,364 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 22:12:20,373 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 22:12:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:20,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:20,390 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 22:12:20,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:20,418 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 22:12:20,475 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 22:12:20,475 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 12 treesize of output 18 [2023-11-06 22:12:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:20,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:20,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:20,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671582217] [2023-11-06 22:12:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671582217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:20,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688859046] [2023-11-06 22:12:20,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:20,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:12:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:12:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:12:21,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 519 [2023-11-06 22:12:21,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 221.75) internal successors, (887), 4 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 22:12:21,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:21,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 519 [2023-11-06 22:12:21,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:21,556 INFO L124 PetriNetUnfolderBase]: 392/670 cut-off events. [2023-11-06 22:12:21,556 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:12:21,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 670 events. 392/670 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2860 event pairs, 310 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 1365. Up to 660 conditions per place. [2023-11-06 22:12:21,561 INFO L140 encePairwiseOnDemand]: 515/519 looper letters, 44 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-06 22:12:21,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 217 flow [2023-11-06 22:12:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:12:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:12:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 920 transitions. [2023-11-06 22:12:21,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44315992292870904 [2023-11-06 22:12:21,566 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 920 transitions. [2023-11-06 22:12:21,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 920 transitions. [2023-11-06 22:12:21,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:21,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 920 transitions. [2023-11-06 22:12:21,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 22:12:21,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:21,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:21,574 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 129 flow. Second operand 4 states and 920 transitions. [2023-11-06 22:12:21,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 217 flow [2023-11-06 22:12:21,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:21,576 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 128 flow [2023-11-06 22:12:21,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-06 22:12:21,577 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2023-11-06 22:12:21,577 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 128 flow [2023-11-06 22:12:21,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.75) internal successors, (887), 4 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 22:12:21,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:21,578 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-11-06 22:12:21,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:21,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:21,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1047916932, now seen corresponding path program 1 times [2023-11-06 22:12:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:21,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260711251] [2023-11-06 22:12:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:21,793 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 22:12:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:21,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:21,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:22,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:12:22,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:22,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:22,100 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:12:22,100 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 26 treesize of output 15 [2023-11-06 22:12:22,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:22,113 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:22,114 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 22:12:22,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:22,125 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:22,125 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 22:12:22,159 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:12:22,159 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 14 treesize of output 20 [2023-11-06 22:12:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:22,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:22,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:22,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260711251] [2023-11-06 22:12:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260711251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:22,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:22,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:22,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014110066] [2023-11-06 22:12:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:22,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 519 [2023-11-06 22:12:22,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 22:12:22,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:22,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 519 [2023-11-06 22:12:22,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:22,648 INFO L124 PetriNetUnfolderBase]: 369/625 cut-off events. [2023-11-06 22:12:22,648 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:12:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 625 events. 369/625 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2624 event pairs, 291 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 1278. Up to 622 conditions per place. [2023-11-06 22:12:22,653 INFO L140 encePairwiseOnDemand]: 516/519 looper letters, 43 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-06 22:12:22,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 212 flow [2023-11-06 22:12:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-11-06 22:12:22,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463712267180475 [2023-11-06 22:12:22,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-11-06 22:12:22,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-11-06 22:12:22,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:22,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-11-06 22:12:22,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 22:12:22,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:22,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:22,662 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 128 flow. Second operand 3 states and 695 transitions. [2023-11-06 22:12:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 212 flow [2023-11-06 22:12:22,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:22,664 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 123 flow [2023-11-06 22:12:22,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=123, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-06 22:12:22,665 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-06 22:12:22,665 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 123 flow [2023-11-06 22:12:22,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 22:12:22,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:22,666 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:22,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:22,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:22,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:22,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1874311318, now seen corresponding path program 1 times [2023-11-06 22:12:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:22,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279987991] [2023-11-06 22:12:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:22,880 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 22:12:22,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:22,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:23,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:12:23,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:23,140 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 11 treesize of output 7 [2023-11-06 22:12:23,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:23,149 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 22:12:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:23,157 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 22:12:23,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:23,164 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 11 treesize of output 1 [2023-11-06 22:12:23,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:23,174 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 22:12:23,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:23,193 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 22:12:23,242 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:12:23,242 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:12:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:23,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:23,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279987991] [2023-11-06 22:12:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279987991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478930744] [2023-11-06 22:12:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:12:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:12:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:12:23,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 519 [2023-11-06 22:12:23,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 22:12:23,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:23,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 519 [2023-11-06 22:12:23,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:23,869 INFO L124 PetriNetUnfolderBase]: 301/510 cut-off events. [2023-11-06 22:12:23,869 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:12:23,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 510 events. 301/510 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 1986 event pairs, 231 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1050. Up to 498 conditions per place. [2023-11-06 22:12:23,874 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-06 22:12:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 201 flow [2023-11-06 22:12:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1072 transitions. [2023-11-06 22:12:23,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41310211946050096 [2023-11-06 22:12:23,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1072 transitions. [2023-11-06 22:12:23,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1072 transitions. [2023-11-06 22:12:23,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:23,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1072 transitions. [2023-11-06 22:12:23,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.4) internal successors, (1072), 5 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 22:12:23,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:23,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:23,888 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 123 flow. Second operand 5 states and 1072 transitions. [2023-11-06 22:12:23,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 201 flow [2023-11-06 22:12:23,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:23,890 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 122 flow [2023-11-06 22:12:23,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-06 22:12:23,891 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-06 22:12:23,891 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 122 flow [2023-11-06 22:12:23,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 22:12:23,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:23,892 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:23,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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)] Ended with exit code 0 [2023-11-06 22:12:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:24,105 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:24,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1874311317, now seen corresponding path program 1 times [2023-11-06 22:12:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304588304] [2023-11-06 22:12:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:24,107 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 22:12:24,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:24,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:24,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:24,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:12:24,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:24,413 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 22:12:24,419 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 7 [2023-11-06 22:12:24,434 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 5 [2023-11-06 22:12:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,443 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 22:12:24,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,456 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 22:12:24,462 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 5 [2023-11-06 22:12:24,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,471 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 22:12:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,484 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 22:12:24,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,503 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 22:12:24,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:24,581 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:12:24,595 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:12:24,596 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 13 treesize of output 13 [2023-11-06 22:12:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:24,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:24,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304588304] [2023-11-06 22:12:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304588304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:24,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:24,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692763497] [2023-11-06 22:12:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:24,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:24,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:25,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 519 [2023-11-06 22:12:25,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states 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 22:12:25,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:25,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 519 [2023-11-06 22:12:25,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:25,910 INFO L124 PetriNetUnfolderBase]: 501/864 cut-off events. [2023-11-06 22:12:25,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:25,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 864 events. 501/864 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4120 event pairs, 213 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1741. Up to 464 conditions per place. [2023-11-06 22:12:25,917 INFO L140 encePairwiseOnDemand]: 512/519 looper letters, 60 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-06 22:12:25,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 303 flow [2023-11-06 22:12:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1313 transitions. [2023-11-06 22:12:25,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216441875401413 [2023-11-06 22:12:25,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1313 transitions. [2023-11-06 22:12:25,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1313 transitions. [2023-11-06 22:12:25,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:25,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1313 transitions. [2023-11-06 22:12:25,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.83333333333334) internal successors, (1313), 6 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states 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 22:12:25,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:12:25,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:12:25,934 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 122 flow. Second operand 6 states and 1313 transitions. [2023-11-06 22:12:25,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 303 flow [2023-11-06 22:12:25,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:25,937 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 137 flow [2023-11-06 22:12:25,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-06 22:12:25,938 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2023-11-06 22:12:25,938 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 137 flow [2023-11-06 22:12:25,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 210.6) internal successors, (1053), 5 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states 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 22:12:25,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:25,939 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:25,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:26,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:26,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:26,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1874311147, now seen corresponding path program 1 times [2023-11-06 22:12:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:26,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854021159] [2023-11-06 22:12:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:26,155 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 22:12:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:26,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:26,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:26,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:12:26,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:26,402 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 5 [2023-11-06 22:12:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:26,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:26,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:26,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854021159] [2023-11-06 22:12:26,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854021159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:26,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:26,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:26,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023222418] [2023-11-06 22:12:26,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:26,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:26,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:27,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 519 [2023-11-06 22:12:27,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states 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 22:12:27,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:27,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 519 [2023-11-06 22:12:27,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:27,623 INFO L124 PetriNetUnfolderBase]: 461/796 cut-off events. [2023-11-06 22:12:27,623 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:12:27,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 796 events. 461/796 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3679 event pairs, 213 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 1688. Up to 464 conditions per place. [2023-11-06 22:12:27,629 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-06 22:12:27,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 308 flow [2023-11-06 22:12:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1122 transitions. [2023-11-06 22:12:27,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323699421965318 [2023-11-06 22:12:27,635 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1122 transitions. [2023-11-06 22:12:27,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1122 transitions. [2023-11-06 22:12:27,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:27,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1122 transitions. [2023-11-06 22:12:27,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.4) internal successors, (1122), 5 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states 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 22:12:27,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:27,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:27,644 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 137 flow. Second operand 5 states and 1122 transitions. [2023-11-06 22:12:27,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 308 flow [2023-11-06 22:12:27,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:12:27,647 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 143 flow [2023-11-06 22:12:27,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=5, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-06 22:12:27,648 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-11-06 22:12:27,649 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 143 flow [2023-11-06 22:12:27,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states 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 22:12:27,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:27,649 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:27,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:27,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:27,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1874311148, now seen corresponding path program 1 times [2023-11-06 22:12:27,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:27,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533236203] [2023-11-06 22:12:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:27,864 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 22:12:27,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:27,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:28,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:12:28,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:28,066 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 22:12:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:28,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:28,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533236203] [2023-11-06 22:12:28,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533236203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:28,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528173320] [2023-11-06 22:12:28,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:12:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:12:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:12:28,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 519 [2023-11-06 22:12:28,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 22:12:28,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:28,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 519 [2023-11-06 22:12:28,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:28,754 INFO L124 PetriNetUnfolderBase]: 324/550 cut-off events. [2023-11-06 22:12:28,754 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-06 22:12:28,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 550 events. 324/550 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2072 event pairs, 230 based on Foata normal form. 24/422 useless extension candidates. Maximal degree in co-relation 1246. Up to 529 conditions per place. [2023-11-06 22:12:28,757 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 37 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-06 22:12:28,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 215 flow [2023-11-06 22:12:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:12:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:12:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2023-11-06 22:12:28,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147398843930636 [2023-11-06 22:12:28,761 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2023-11-06 22:12:28,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2023-11-06 22:12:28,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:28,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2023-11-06 22:12:28,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 states 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 22:12:28,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:28,768 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:12:28,768 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 143 flow. Second operand 4 states and 861 transitions. [2023-11-06 22:12:28,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 215 flow [2023-11-06 22:12:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 207 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:12:28,771 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 133 flow [2023-11-06 22:12:28,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-06 22:12:28,771 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-06 22:12:28,771 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 133 flow [2023-11-06 22:12:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 22:12:28,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:28,772 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:28,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:28,982 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:28,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:28,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1623321669, now seen corresponding path program 1 times [2023-11-06 22:12:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374069224] [2023-11-06 22:12:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:28,983 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 22:12:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:28,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:29,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:12:29,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:29,222 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 5 [2023-11-06 22:12:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:29,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:29,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374069224] [2023-11-06 22:12:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374069224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:29,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969007116] [2023-11-06 22:12:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:29,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:30,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 519 [2023-11-06 22:12:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 22:12:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:30,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 519 [2023-11-06 22:12:30,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:30,544 INFO L124 PetriNetUnfolderBase]: 495/827 cut-off events. [2023-11-06 22:12:30,544 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-06 22:12:30,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 827 events. 495/827 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3561 event pairs, 230 based on Foata normal form. 0/584 useless extension candidates. Maximal degree in co-relation 1824. Up to 529 conditions per place. [2023-11-06 22:12:30,548 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 56 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-11-06 22:12:30,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 313 flow [2023-11-06 22:12:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1116 transitions. [2023-11-06 22:12:30,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300578034682081 [2023-11-06 22:12:30,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1116 transitions. [2023-11-06 22:12:30,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1116 transitions. [2023-11-06 22:12:30,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:30,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1116 transitions. [2023-11-06 22:12:30,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 22:12:30,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:30,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:12:30,566 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 133 flow. Second operand 5 states and 1116 transitions. [2023-11-06 22:12:30,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 313 flow [2023-11-06 22:12:30,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:30,568 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 146 flow [2023-11-06 22:12:30,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-06 22:12:30,569 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2023-11-06 22:12:30,569 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 146 flow [2023-11-06 22:12:30,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 22:12:30,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:30,570 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:30,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:30,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:30,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:30,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1623321626, now seen corresponding path program 1 times [2023-11-06 22:12:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:30,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220506421] [2023-11-06 22:12:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:30,784 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 22:12:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:30,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:30,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:31,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:12:31,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:31,141 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 5 [2023-11-06 22:12:31,147 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 22:12:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,158 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 22:12:31,164 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 5 [2023-11-06 22:12:31,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,175 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 22:12:31,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,184 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 22:12:31,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,208 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 22:12:31,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,217 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 22:12:31,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:31,308 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:12:31,327 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:12:31,327 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 13 treesize of output 13 [2023-11-06 22:12:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:31,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:31,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:31,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220506421] [2023-11-06 22:12:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220506421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:31,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:31,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161867313] [2023-11-06 22:12:31,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:31,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:31,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:32,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 519 [2023-11-06 22:12:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 22:12:32,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:32,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 519 [2023-11-06 22:12:32,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:32,659 INFO L124 PetriNetUnfolderBase]: 438/736 cut-off events. [2023-11-06 22:12:32,659 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-11-06 22:12:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 736 events. 438/736 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3053 event pairs, 230 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 1797. Up to 529 conditions per place. [2023-11-06 22:12:32,665 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 54 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-06 22:12:32,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 320 flow [2023-11-06 22:12:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1304 transitions. [2023-11-06 22:12:32,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187540141297367 [2023-11-06 22:12:32,670 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1304 transitions. [2023-11-06 22:12:32,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1304 transitions. [2023-11-06 22:12:32,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:32,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1304 transitions. [2023-11-06 22:12:32,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.33333333333334) internal successors, (1304), 6 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states 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 22:12:32,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:12:32,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 519.0) internal successors, (3633), 7 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states 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 22:12:32,680 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 146 flow. Second operand 6 states and 1304 transitions. [2023-11-06 22:12:32,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 320 flow [2023-11-06 22:12:32,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:32,683 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 154 flow [2023-11-06 22:12:32,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-06 22:12:32,684 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-11-06 22:12:32,684 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 154 flow [2023-11-06 22:12:32,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states 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 22:12:32,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:32,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:32,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:32,905 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:32,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1262194192, now seen corresponding path program 1 times [2023-11-06 22:12:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:32,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000047439] [2023-11-06 22:12:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:32,907 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 22:12:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:32,908 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:32,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:33,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:12:33,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:33,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:33,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000047439] [2023-11-06 22:12:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000047439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:33,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:12:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754213609] [2023-11-06 22:12:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:33,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:33,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 519 [2023-11-06 22:12:33,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 22:12:33,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:33,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 519 [2023-11-06 22:12:33,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:33,649 INFO L124 PetriNetUnfolderBase]: 526/934 cut-off events. [2023-11-06 22:12:33,649 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-06 22:12:33,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 934 events. 526/934 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4336 event pairs, 324 based on Foata normal form. 32/854 useless extension candidates. Maximal degree in co-relation 2386. Up to 696 conditions per place. [2023-11-06 22:12:33,655 INFO L140 encePairwiseOnDemand]: 517/519 looper letters, 53 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-06 22:12:33,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 309 flow [2023-11-06 22:12:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-11-06 22:12:33,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46371226718047526 [2023-11-06 22:12:33,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-11-06 22:12:33,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-11-06 22:12:33,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:33,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-11-06 22:12:33,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 22:12:33,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:33,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 22:12:33,666 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 154 flow. Second operand 3 states and 722 transitions. [2023-11-06 22:12:33,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 309 flow [2023-11-06 22:12:33,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 295 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:12:33,669 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 151 flow [2023-11-06 22:12:33,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-06 22:12:33,670 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-11-06 22:12:33,670 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 151 flow [2023-11-06 22:12:33,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 22:12:33,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:33,671 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:33,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:33,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:33,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:33,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1216641635, now seen corresponding path program 1 times [2023-11-06 22:12:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:33,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738872388] [2023-11-06 22:12:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:33,887 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 22:12:33,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:33,889 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:33,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:34,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:12:34,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:34,163 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 5 [2023-11-06 22:12:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:34,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:34,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738872388] [2023-11-06 22:12:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738872388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:34,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:12:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147541073] [2023-11-06 22:12:34,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:38,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 519 [2023-11-06 22:12:38,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 151 flow. Second operand has 10 states, 10 states have (on average 213.0) internal successors, (2130), 10 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 22:12:38,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:38,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 519 [2023-11-06 22:12:38,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:39,936 INFO L124 PetriNetUnfolderBase]: 1124/1914 cut-off events. [2023-11-06 22:12:39,937 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2023-11-06 22:12:39,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4805 conditions, 1914 events. 1124/1914 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10026 event pairs, 243 based on Foata normal form. 0/1803 useless extension candidates. Maximal degree in co-relation 4793. Up to 550 conditions per place. [2023-11-06 22:12:39,947 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 114 selfloop transitions, 8 changer transitions 0/123 dead transitions. [2023-11-06 22:12:39,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 123 transitions, 671 flow [2023-11-06 22:12:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1800 transitions. [2023-11-06 22:12:39,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43352601156069365 [2023-11-06 22:12:39,953 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1800 transitions. [2023-11-06 22:12:39,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1800 transitions. [2023-11-06 22:12:39,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:39,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1800 transitions. [2023-11-06 22:12:39,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 22:12:39,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:39,963 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:39,964 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 151 flow. Second operand 8 states and 1800 transitions. [2023-11-06 22:12:39,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 123 transitions, 671 flow [2023-11-06 22:12:39,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 123 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:39,968 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 203 flow [2023-11-06 22:12:39,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-06 22:12:39,968 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2023-11-06 22:12:39,969 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 203 flow [2023-11-06 22:12:39,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.0) internal successors, (2130), 10 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states 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 22:12:39,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:39,970 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:39,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:40,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:40,177 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:40,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1216641678, now seen corresponding path program 1 times [2023-11-06 22:12:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:40,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190054628] [2023-11-06 22:12:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:40,178 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 22:12:40,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:40,179 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:40,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:40,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:12:40,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:40,555 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 22:12:40,560 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 5 [2023-11-06 22:12:40,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,571 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 22:12:40,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,582 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 22:12:40,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,608 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 22:12:40,615 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 22:12:40,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,623 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 6 treesize of output 1 [2023-11-06 22:12:40,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,633 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 22:12:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:40,701 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:12:40,718 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:12:40,718 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 13 treesize of output 13 [2023-11-06 22:12:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:40,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:41,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190054628] [2023-11-06 22:12:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190054628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:41,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:12:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134252223] [2023-11-06 22:12:41,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 519 [2023-11-06 22:12:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 203 flow. Second operand has 10 states, 10 states have (on average 209.2) internal successors, (2092), 10 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states 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 22:12:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 519 [2023-11-06 22:12:49,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:51,097 INFO L124 PetriNetUnfolderBase]: 940/1638 cut-off events. [2023-11-06 22:12:51,097 INFO L125 PetriNetUnfolderBase]: For 1517/1517 co-relation queries the response was YES. [2023-11-06 22:12:51,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4763 conditions, 1638 events. 940/1638 cut-off events. For 1517/1517 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8474 event pairs, 306 based on Foata normal form. 138/1719 useless extension candidates. Maximal degree in co-relation 4747. Up to 665 conditions per place. [2023-11-06 22:12:51,108 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 111 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2023-11-06 22:12:51,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 120 transitions, 683 flow [2023-11-06 22:12:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1972 transitions. [2023-11-06 22:12:51,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42217940483836436 [2023-11-06 22:12:51,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1972 transitions. [2023-11-06 22:12:51,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1972 transitions. [2023-11-06 22:12:51,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:51,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1972 transitions. [2023-11-06 22:12:51,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.11111111111111) internal successors, (1972), 9 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states 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 22:12:51,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 519.0) internal successors, (5190), 10 states have internal predecessors, (5190), 0 states have call successors, (0), 0 states 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 22:12:51,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 519.0) internal successors, (5190), 10 states have internal predecessors, (5190), 0 states have call successors, (0), 0 states 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 22:12:51,129 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 203 flow. Second operand 9 states and 1972 transitions. [2023-11-06 22:12:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 120 transitions, 683 flow [2023-11-06 22:12:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 664 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-06 22:12:51,137 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 194 flow [2023-11-06 22:12:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2023-11-06 22:12:51,137 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2023-11-06 22:12:51,138 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 194 flow [2023-11-06 22:12:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.2) internal successors, (2092), 10 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states 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 22:12:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:51,138 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:51,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:51,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:51,349 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:51,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1568987771, now seen corresponding path program 1 times [2023-11-06 22:12:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:51,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32519767] [2023-11-06 22:12:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:51,350 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 22:12:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:51,351 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:51,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:51,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:12:51,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:51,613 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 5 [2023-11-06 22:12:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:51,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:52,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:52,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32519767] [2023-11-06 22:12:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32519767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:52,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:12:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442255315] [2023-11-06 22:12:52,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:52,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:12:56,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 519 [2023-11-06 22:12:56,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states 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 22:12:56,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:56,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 519 [2023-11-06 22:12:56,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:58,091 INFO L124 PetriNetUnfolderBase]: 2043/3612 cut-off events. [2023-11-06 22:12:58,091 INFO L125 PetriNetUnfolderBase]: For 4320/4320 co-relation queries the response was YES. [2023-11-06 22:12:58,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9919 conditions, 3612 events. 2043/3612 cut-off events. For 4320/4320 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 19377 event pairs, 231 based on Foata normal form. 168/3640 useless extension candidates. Maximal degree in co-relation 9905. Up to 857 conditions per place. [2023-11-06 22:12:58,114 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 126 selfloop transitions, 10 changer transitions 0/137 dead transitions. [2023-11-06 22:12:58,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 862 flow [2023-11-06 22:12:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1802 transitions. [2023-11-06 22:12:58,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340077071290944 [2023-11-06 22:12:58,119 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1802 transitions. [2023-11-06 22:12:58,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1802 transitions. [2023-11-06 22:12:58,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:58,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1802 transitions. [2023-11-06 22:12:58,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 225.25) internal successors, (1802), 8 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states 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 22:12:58,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:58,129 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 519.0) internal successors, (4671), 9 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states 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 22:12:58,129 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 194 flow. Second operand 8 states and 1802 transitions. [2023-11-06 22:12:58,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 862 flow [2023-11-06 22:12:58,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 137 transitions, 801 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 22:12:58,136 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 242 flow [2023-11-06 22:12:58,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2023-11-06 22:12:58,137 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2023-11-06 22:12:58,137 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 242 flow [2023-11-06 22:12:58,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states 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 22:12:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:58,138 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:58,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:58,353 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:12:58,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1568987601, now seen corresponding path program 1 times [2023-11-06 22:12:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:58,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604823101] [2023-11-06 22:12:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:58,354 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 22:12:58,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:58,356 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:58,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:12:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:58,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:12:58,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:58,738 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 22:12:58,743 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 7 [2023-11-06 22:12:58,795 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 5 [2023-11-06 22:12:58,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,804 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 22:12:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,814 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 11 treesize of output 1 [2023-11-06 22:12:58,819 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 5 [2023-11-06 22:12:58,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,827 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 22:12:58,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,839 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 22:12:58,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,863 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 22:12:58,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:58,935 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:12:58,948 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:12:58,948 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 13 treesize of output 13 [2023-11-06 22:12:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:59,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:12:59,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604823101] [2023-11-06 22:12:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604823101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:59,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:12:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066045828] [2023-11-06 22:12:59,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:59,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:12:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:12:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:04,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 519 [2023-11-06 22:13:04,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 209.6) internal successors, (2096), 10 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 22:13:04,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:04,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 519 [2023-11-06 22:13:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:06,539 INFO L124 PetriNetUnfolderBase]: 1933/3334 cut-off events. [2023-11-06 22:13:06,540 INFO L125 PetriNetUnfolderBase]: For 4166/4166 co-relation queries the response was YES. [2023-11-06 22:13:06,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9304 conditions, 3334 events. 1933/3334 cut-off events. For 4166/4166 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16841 event pairs, 153 based on Foata normal form. 196/3390 useless extension candidates. Maximal degree in co-relation 9286. Up to 898 conditions per place. [2023-11-06 22:13:06,561 INFO L140 encePairwiseOnDemand]: 510/519 looper letters, 123 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2023-11-06 22:13:06,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 826 flow [2023-11-06 22:13:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:13:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:13:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1972 transitions. [2023-11-06 22:13:06,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42217940483836436 [2023-11-06 22:13:06,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1972 transitions. [2023-11-06 22:13:06,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1972 transitions. [2023-11-06 22:13:06,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:06,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1972 transitions. [2023-11-06 22:13:06,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.11111111111111) internal successors, (1972), 9 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states 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 22:13:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 519.0) internal successors, (5190), 10 states have internal predecessors, (5190), 0 states have call successors, (0), 0 states 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 22:13:06,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 519.0) internal successors, (5190), 10 states have internal predecessors, (5190), 0 states have call successors, (0), 0 states 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 22:13:06,578 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 242 flow. Second operand 9 states and 1972 transitions. [2023-11-06 22:13:06,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 826 flow [2023-11-06 22:13:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 133 transitions, 815 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:06,587 INFO L231 Difference]: Finished difference. Result has 76 places, 47 transitions, 260 flow [2023-11-06 22:13:06,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=76, PETRI_TRANSITIONS=47} [2023-11-06 22:13:06,588 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2023-11-06 22:13:06,588 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 47 transitions, 260 flow [2023-11-06 22:13:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.6) internal successors, (2096), 10 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 22:13:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:06,589 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:06,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:06,805 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:06,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:06,805 INFO L85 PathProgramCache]: Analyzing trace with hash -252281370, now seen corresponding path program 2 times [2023-11-06 22:13:06,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:06,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280245135] [2023-11-06 22:13:06,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:06,806 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 22:13:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:06,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:06,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:07,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:13:07,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:07,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:13:07,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:07,047 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 5 [2023-11-06 22:13:07,056 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 22:13:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:07,068 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 22:13:07,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:07,124 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 22:13:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:07,134 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 22:13:07,141 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 5 [2023-11-06 22:13:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:07,154 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 22:13:07,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:07,165 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 22:13:07,252 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:13:07,253 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 13 treesize of output 13 [2023-11-06 22:13:07,261 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 0 case distinctions, treesize of input 12 treesize of output 14 [2023-11-06 22:13:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:13:07,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:07,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280245135] [2023-11-06 22:13:07,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280245135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:07,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:07,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:13:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973823496] [2023-11-06 22:13:07,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:13:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:13:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:13:08,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 519 [2023-11-06 22:13:08,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 47 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 22:13:08,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:08,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 519 [2023-11-06 22:13:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:09,166 INFO L124 PetriNetUnfolderBase]: 1601/2856 cut-off events. [2023-11-06 22:13:09,166 INFO L125 PetriNetUnfolderBase]: For 3751/3751 co-relation queries the response was YES. [2023-11-06 22:13:09,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 2856 events. 1601/2856 cut-off events. For 3751/3751 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15187 event pairs, 1361 based on Foata normal form. 110/2962 useless extension candidates. Maximal degree in co-relation 8277. Up to 2766 conditions per place. [2023-11-06 22:13:09,186 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 41 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-06 22:13:09,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 45 transitions, 330 flow [2023-11-06 22:13:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:13:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:13:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1073 transitions. [2023-11-06 22:13:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348747591522156 [2023-11-06 22:13:09,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1073 transitions. [2023-11-06 22:13:09,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1073 transitions. [2023-11-06 22:13:09,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:09,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1073 transitions. [2023-11-06 22:13:09,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states 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 22:13:09,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:13:09,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:13:09,198 INFO L175 Difference]: Start difference. First operand has 76 places, 47 transitions, 260 flow. Second operand 5 states and 1073 transitions. [2023-11-06 22:13:09,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 45 transitions, 330 flow [2023-11-06 22:13:09,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 45 transitions, 306 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-06 22:13:09,206 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 224 flow [2023-11-06 22:13:09,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2023-11-06 22:13:09,207 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-11-06 22:13:09,207 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 224 flow [2023-11-06 22:13:09,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 22:13:09,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:09,208 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:09,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:09,421 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:09,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:09,422 INFO L85 PathProgramCache]: Analyzing trace with hash -252281413, now seen corresponding path program 2 times [2023-11-06 22:13:09,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:09,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197838548] [2023-11-06 22:13:09,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:09,423 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 22:13:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:09,424 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:09,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:09,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:09,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:09,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:13:09,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:09,847 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 5 [2023-11-06 22:13:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:10,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:10,910 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:10,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197838548] [2023-11-06 22:13:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197838548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:10,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:13:10,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:13:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996717245] [2023-11-06 22:13:10,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:13:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:13:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:13:20,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 519 [2023-11-06 22:13:20,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 224 flow. Second operand has 16 states, 16 states have (on average 212.625) internal successors, (3402), 16 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states 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 22:13:20,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:20,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 519 [2023-11-06 22:13:20,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:25,504 INFO L124 PetriNetUnfolderBase]: 3125/5443 cut-off events. [2023-11-06 22:13:25,504 INFO L125 PetriNetUnfolderBase]: For 6210/6210 co-relation queries the response was YES. [2023-11-06 22:13:25,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15305 conditions, 5443 events. 3125/5443 cut-off events. For 6210/6210 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 31643 event pairs, 441 based on Foata normal form. 504/5946 useless extension candidates. Maximal degree in co-relation 15287. Up to 1008 conditions per place. [2023-11-06 22:13:25,549 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 247 selfloop transitions, 13 changer transitions 0/261 dead transitions. [2023-11-06 22:13:25,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 261 transitions, 1810 flow [2023-11-06 22:13:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:13:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:13:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3146 transitions. [2023-11-06 22:13:25,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329755023396642 [2023-11-06 22:13:25,557 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3146 transitions. [2023-11-06 22:13:25,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3146 transitions. [2023-11-06 22:13:25,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:25,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3146 transitions. [2023-11-06 22:13:25,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 224.71428571428572) internal successors, (3146), 14 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states 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 22:13:25,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 519.0) internal successors, (7785), 15 states have internal predecessors, (7785), 0 states have call successors, (0), 0 states 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 22:13:25,617 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 519.0) internal successors, (7785), 15 states have internal predecessors, (7785), 0 states have call successors, (0), 0 states 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 22:13:25,618 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 224 flow. Second operand 14 states and 3146 transitions. [2023-11-06 22:13:25,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 261 transitions, 1810 flow [2023-11-06 22:13:25,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 261 transitions, 1805 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:25,635 INFO L231 Difference]: Finished difference. Result has 83 places, 51 transitions, 307 flow [2023-11-06 22:13:25,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=307, PETRI_PLACES=83, PETRI_TRANSITIONS=51} [2023-11-06 22:13:25,636 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2023-11-06 22:13:25,636 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 51 transitions, 307 flow [2023-11-06 22:13:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 212.625) internal successors, (3402), 16 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states 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 22:13:25,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:25,638 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:25,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:25,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:25,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 70112383, now seen corresponding path program 1 times [2023-11-06 22:13:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60520640] [2023-11-06 22:13:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:25,856 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 22:13:25,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:25,858 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:25,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:26,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:13:26,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:26,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:26,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60520640] [2023-11-06 22:13:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60520640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:26,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869885964] [2023-11-06 22:13:26,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:26,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:26,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:13:26,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 51 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:26,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:26,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:13:26,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:28,005 INFO L124 PetriNetUnfolderBase]: 3193/5766 cut-off events. [2023-11-06 22:13:28,005 INFO L125 PetriNetUnfolderBase]: For 12285/12285 co-relation queries the response was YES. [2023-11-06 22:13:28,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18035 conditions, 5766 events. 3193/5766 cut-off events. For 12285/12285 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 35289 event pairs, 2145 based on Foata normal form. 4/5770 useless extension candidates. Maximal degree in co-relation 18011. Up to 4253 conditions per place. [2023-11-06 22:13:28,042 INFO L140 encePairwiseOnDemand]: 513/519 looper letters, 90 selfloop transitions, 5 changer transitions 2/98 dead transitions. [2023-11-06 22:13:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 808 flow [2023-11-06 22:13:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:13:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:13:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1170 transitions. [2023-11-06 22:13:28,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508670520231214 [2023-11-06 22:13:28,045 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1170 transitions. [2023-11-06 22:13:28,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1170 transitions. [2023-11-06 22:13:28,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:28,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1170 transitions. [2023-11-06 22:13:28,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 22:13:28,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:13:28,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 519.0) internal successors, (3114), 6 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 22:13:28,049 INFO L175 Difference]: Start difference. First operand has 83 places, 51 transitions, 307 flow. Second operand 5 states and 1170 transitions. [2023-11-06 22:13:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 808 flow [2023-11-06 22:13:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 698 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-11-06 22:13:28,072 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 287 flow [2023-11-06 22:13:28,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2023-11-06 22:13:28,073 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2023-11-06 22:13:28,073 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 287 flow [2023-11-06 22:13:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:28,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:28,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:28,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:28,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:28,290 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:28,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash -777971011, now seen corresponding path program 2 times [2023-11-06 22:13:28,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:28,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794103858] [2023-11-06 22:13:28,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:28,291 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 22:13:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:28,292 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:28,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (27)] Waiting until timeout for monitored process [2023-11-06 22:13:28,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:13:28,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:28,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:13:28,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:28,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:28,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:28,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794103858] [2023-11-06 22:13:28,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794103858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:28,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:28,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49745801] [2023-11-06 22:13:28,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:28,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:28,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:28,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:13:28,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:28,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:28,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:13:28,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:30,426 INFO L124 PetriNetUnfolderBase]: 3768/6791 cut-off events. [2023-11-06 22:13:30,426 INFO L125 PetriNetUnfolderBase]: For 10704/10704 co-relation queries the response was YES. [2023-11-06 22:13:30,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20039 conditions, 6791 events. 3768/6791 cut-off events. For 10704/10704 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 43100 event pairs, 1888 based on Foata normal form. 46/6837 useless extension candidates. Maximal degree in co-relation 20013. Up to 5573 conditions per place. [2023-11-06 22:13:30,469 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 77 selfloop transitions, 4 changer transitions 3/85 dead transitions. [2023-11-06 22:13:30,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 625 flow [2023-11-06 22:13:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:13:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:13:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 942 transitions. [2023-11-06 22:13:30,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45375722543352603 [2023-11-06 22:13:30,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 942 transitions. [2023-11-06 22:13:30,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 942 transitions. [2023-11-06 22:13:30,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:30,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 942 transitions. [2023-11-06 22:13:30,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.5) internal successors, (942), 4 states have internal predecessors, (942), 0 states have call successors, (0), 0 states 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 22:13:30,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:13:30,474 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:13:30,474 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 287 flow. Second operand 4 states and 942 transitions. [2023-11-06 22:13:30,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 625 flow [2023-11-06 22:13:30,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 613 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:30,493 INFO L231 Difference]: Finished difference. Result has 85 places, 56 transitions, 334 flow [2023-11-06 22:13:30,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2023-11-06 22:13:30,493 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2023-11-06 22:13:30,494 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 334 flow [2023-11-06 22:13:30,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:30,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:30,494 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:30,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:30,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:30,700 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:30,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1008733631, now seen corresponding path program 3 times [2023-11-06 22:13:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:30,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780877393] [2023-11-06 22:13:30,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:13:30,701 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 22:13:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:30,703 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:30,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (28)] Waiting until timeout for monitored process [2023-11-06 22:13:30,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:13:30,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:30,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:13:30,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:30,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:30,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780877393] [2023-11-06 22:13:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780877393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901928404] [2023-11-06 22:13:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:31,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 519 [2023-11-06 22:13:31,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:31,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:31,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 519 [2023-11-06 22:13:31,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:32,904 INFO L124 PetriNetUnfolderBase]: 3653/6578 cut-off events. [2023-11-06 22:13:32,904 INFO L125 PetriNetUnfolderBase]: For 11797/11797 co-relation queries the response was YES. [2023-11-06 22:13:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19811 conditions, 6578 events. 3653/6578 cut-off events. For 11797/11797 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 40713 event pairs, 2359 based on Foata normal form. 46/6624 useless extension candidates. Maximal degree in co-relation 19783. Up to 4311 conditions per place. [2023-11-06 22:13:32,972 INFO L140 encePairwiseOnDemand]: 514/519 looper letters, 91 selfloop transitions, 7 changer transitions 3/102 dead transitions. [2023-11-06 22:13:32,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 102 transitions, 789 flow [2023-11-06 22:13:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:13:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:13:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2023-11-06 22:13:32,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616570327552985 [2023-11-06 22:13:32,975 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2023-11-06 22:13:32,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2023-11-06 22:13:32,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:32,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2023-11-06 22:13:32,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 0 states have call successors, (0), 0 states 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 22:13:32,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:13:32,980 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 519.0) internal successors, (2595), 5 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states 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 22:13:32,980 INFO L175 Difference]: Start difference. First operand has 85 places, 56 transitions, 334 flow. Second operand 4 states and 947 transitions. [2023-11-06 22:13:32,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 102 transitions, 789 flow [2023-11-06 22:13:33,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 785 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:13:33,010 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 364 flow [2023-11-06 22:13:33,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2023-11-06 22:13:33,011 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2023-11-06 22:13:33,012 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 364 flow [2023-11-06 22:13:33,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.25) internal successors, (909), 4 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:13:33,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:33,012 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:33,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (28)] Ended with exit code 0 [2023-11-06 22:13:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:33,226 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:33,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1808922890, now seen corresponding path program 1 times [2023-11-06 22:13:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446289276] [2023-11-06 22:13:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:33,227 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 22:13:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:33,228 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (29)] Waiting until timeout for monitored process [2023-11-06 22:13:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:33,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:13:33,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:34,253 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:13:34,253 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:13:34,264 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 89 treesize of output 81 [2023-11-06 22:13:34,277 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 81 treesize of output 73 [2023-11-06 22:13:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:34,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:34,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446289276] [2023-11-06 22:13:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446289276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:34,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:13:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866336538] [2023-11-06 22:13:34,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:34,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:36,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:13:36,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:13:36,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:36,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:13:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:40,015 INFO L124 PetriNetUnfolderBase]: 3992/7186 cut-off events. [2023-11-06 22:13:40,015 INFO L125 PetriNetUnfolderBase]: For 13841/13841 co-relation queries the response was YES. [2023-11-06 22:13:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21875 conditions, 7186 events. 3992/7186 cut-off events. For 13841/13841 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 45588 event pairs, 2309 based on Foata normal form. 5/7191 useless extension candidates. Maximal degree in co-relation 21845. Up to 4298 conditions per place. [2023-11-06 22:13:40,082 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 124 selfloop transitions, 15 changer transitions 10/150 dead transitions. [2023-11-06 22:13:40,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 150 transitions, 1149 flow [2023-11-06 22:13:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:40,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:13:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2072 transitions. [2023-11-06 22:13:40,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39922928709055877 [2023-11-06 22:13:40,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2072 transitions. [2023-11-06 22:13:40,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2072 transitions. [2023-11-06 22:13:40,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:40,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2072 transitions. [2023-11-06 22:13:40,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 207.2) internal successors, (2072), 10 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 22:13:40,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:40,093 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:40,093 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 364 flow. Second operand 10 states and 2072 transitions. [2023-11-06 22:13:40,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 150 transitions, 1149 flow [2023-11-06 22:13:40,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 150 transitions, 1133 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:40,121 INFO L231 Difference]: Finished difference. Result has 100 places, 65 transitions, 446 flow [2023-11-06 22:13:40,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=100, PETRI_TRANSITIONS=65} [2023-11-06 22:13:40,123 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2023-11-06 22:13:40,123 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 65 transitions, 446 flow [2023-11-06 22:13:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:13:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:40,124 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:40,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:40,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:40,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:40,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1391336138, now seen corresponding path program 2 times [2023-11-06 22:13:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271437443] [2023-11-06 22:13:40,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:40,347 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 22:13:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:40,348 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:40,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (30)] Waiting until timeout for monitored process [2023-11-06 22:13:40,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:13:40,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:40,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:13:40,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:40,900 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:13:40,901 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 153 treesize of output 145 [2023-11-06 22:13:40,913 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:13:40,913 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 145 treesize of output 137 [2023-11-06 22:13:41,360 INFO L322 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-11-06 22:13:41,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-11-06 22:13:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:41,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:41,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271437443] [2023-11-06 22:13:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271437443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:13:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555469445] [2023-11-06 22:13:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:41,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:43,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 519 [2023-11-06 22:13:43,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 65 transitions, 446 flow. Second operand has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:13:43,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:43,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 519 [2023-11-06 22:13:43,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:46,958 INFO L124 PetriNetUnfolderBase]: 4002/7198 cut-off events. [2023-11-06 22:13:46,958 INFO L125 PetriNetUnfolderBase]: For 17905/17907 co-relation queries the response was YES. [2023-11-06 22:13:46,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25352 conditions, 7198 events. 4002/7198 cut-off events. For 17905/17907 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45613 event pairs, 2437 based on Foata normal form. 3/7201 useless extension candidates. Maximal degree in co-relation 25317. Up to 4298 conditions per place. [2023-11-06 22:13:47,018 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 96 selfloop transitions, 18 changer transitions 7/122 dead transitions. [2023-11-06 22:13:47,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 122 transitions, 1012 flow [2023-11-06 22:13:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:13:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2070 transitions. [2023-11-06 22:13:47,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3988439306358382 [2023-11-06 22:13:47,023 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2070 transitions. [2023-11-06 22:13:47,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2070 transitions. [2023-11-06 22:13:47,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:47,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2070 transitions. [2023-11-06 22:13:47,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 207.0) internal successors, (2070), 10 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states 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 22:13:47,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:47,034 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:47,034 INFO L175 Difference]: Start difference. First operand has 100 places, 65 transitions, 446 flow. Second operand 10 states and 2070 transitions. [2023-11-06 22:13:47,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 122 transitions, 1012 flow [2023-11-06 22:13:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 122 transitions, 987 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-06 22:13:47,107 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 533 flow [2023-11-06 22:13:47,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=533, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2023-11-06 22:13:47,108 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2023-11-06 22:13:47,108 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 533 flow [2023-11-06 22:13:47,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:13:47,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:47,109 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:47,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:47,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:47,321 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:47,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 764132824, now seen corresponding path program 3 times [2023-11-06 22:13:47,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:47,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329687438] [2023-11-06 22:13:47,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:13:47,323 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 22:13:47,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:47,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:47,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (31)] Waiting until timeout for monitored process [2023-11-06 22:13:47,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:13:47,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:47,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:13:47,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:48,122 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:13:48,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:13:48,132 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 89 treesize of output 81 [2023-11-06 22:13:48,143 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 81 treesize of output 73 [2023-11-06 22:13:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:48,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:48,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329687438] [2023-11-06 22:13:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329687438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:13:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373080921] [2023-11-06 22:13:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:50,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:13:50,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 533 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:13:50,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:50,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:13:50,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:53,674 INFO L124 PetriNetUnfolderBase]: 4005/7221 cut-off events. [2023-11-06 22:13:53,674 INFO L125 PetriNetUnfolderBase]: For 20228/20230 co-relation queries the response was YES. [2023-11-06 22:13:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26188 conditions, 7221 events. 4005/7221 cut-off events. For 20228/20230 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45945 event pairs, 2409 based on Foata normal form. 9/7230 useless extension candidates. Maximal degree in co-relation 26151. Up to 4298 conditions per place. [2023-11-06 22:13:53,732 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 119 selfloop transitions, 19 changer transitions 5/144 dead transitions. [2023-11-06 22:13:53,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 1225 flow [2023-11-06 22:13:53,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:13:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:13:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2071 transitions. [2023-11-06 22:13:53,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903660886319847 [2023-11-06 22:13:53,737 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2071 transitions. [2023-11-06 22:13:53,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2071 transitions. [2023-11-06 22:13:53,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:53,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2071 transitions. [2023-11-06 22:13:53,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 207.1) internal successors, (2071), 10 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states 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 22:13:53,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:53,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:13:53,747 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 533 flow. Second operand 10 states and 2071 transitions. [2023-11-06 22:13:53,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 144 transitions, 1225 flow [2023-11-06 22:13:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 144 transitions, 1177 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-06 22:13:53,828 INFO L231 Difference]: Finished difference. Result has 111 places, 73 transitions, 568 flow [2023-11-06 22:13:53,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=568, PETRI_PLACES=111, PETRI_TRANSITIONS=73} [2023-11-06 22:13:53,828 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2023-11-06 22:13:53,829 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 73 transitions, 568 flow [2023-11-06 22:13:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:13:53,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:53,829 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:53,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:54,033 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:13:54,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2145552972, now seen corresponding path program 4 times [2023-11-06 22:13:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277221642] [2023-11-06 22:13:54,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:13:54,034 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 22:13:54,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:54,036 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:13:54,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (32)] Waiting until timeout for monitored process [2023-11-06 22:13:54,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:13:54,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:54,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:13:54,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:54,748 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:13:54,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:13:54,757 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 89 treesize of output 81 [2023-11-06 22:13:54,767 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 81 treesize of output 73 [2023-11-06 22:13:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:13:54,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:54,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:54,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277221642] [2023-11-06 22:13:54,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277221642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:54,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:54,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:13:54,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832413499] [2023-11-06 22:13:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:54,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:54,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:56,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:13:56,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 73 transitions, 568 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:13:56,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:56,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:13:56,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:59,990 INFO L124 PetriNetUnfolderBase]: 4002/7212 cut-off events. [2023-11-06 22:13:59,991 INFO L125 PetriNetUnfolderBase]: For 24071/24073 co-relation queries the response was YES. [2023-11-06 22:14:00,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27705 conditions, 7212 events. 4002/7212 cut-off events. For 24071/24073 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45780 event pairs, 2313 based on Foata normal form. 3/7215 useless extension candidates. Maximal degree in co-relation 27666. Up to 4298 conditions per place. [2023-11-06 22:14:00,057 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 111 selfloop transitions, 17 changer transitions 13/142 dead transitions. [2023-11-06 22:14:00,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 142 transitions, 1258 flow [2023-11-06 22:14:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2067 transitions. [2023-11-06 22:14:00,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982658959537572 [2023-11-06 22:14:00,062 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2067 transitions. [2023-11-06 22:14:00,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2067 transitions. [2023-11-06 22:14:00,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:00,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2067 transitions. [2023-11-06 22:14:00,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.7) internal successors, (2067), 10 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states 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 22:14:00,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:00,068 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:00,068 INFO L175 Difference]: Start difference. First operand has 111 places, 73 transitions, 568 flow. Second operand 10 states and 2067 transitions. [2023-11-06 22:14:00,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 142 transitions, 1258 flow [2023-11-06 22:14:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 142 transitions, 1218 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-06 22:14:00,130 INFO L231 Difference]: Finished difference. Result has 115 places, 71 transitions, 549 flow [2023-11-06 22:14:00,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=549, PETRI_PLACES=115, PETRI_TRANSITIONS=71} [2023-11-06 22:14:00,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2023-11-06 22:14:00,131 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 71 transitions, 549 flow [2023-11-06 22:14:00,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:00,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:00,132 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:00,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:00,334 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:00,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1912391294, now seen corresponding path program 5 times [2023-11-06 22:14:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523554297] [2023-11-06 22:14:00,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:14:00,335 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 22:14:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:00,336 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:00,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (33)] Waiting until timeout for monitored process [2023-11-06 22:14:00,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:14:00,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:00,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:14:00,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:01,348 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:14:01,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:14:01,357 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 89 treesize of output 81 [2023-11-06 22:14:01,365 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 81 treesize of output 73 [2023-11-06 22:14:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:01,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:01,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523554297] [2023-11-06 22:14:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523554297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:01,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193249773] [2023-11-06 22:14:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:03,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:14:03,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 71 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:03,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:03,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:14:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:06,373 INFO L124 PetriNetUnfolderBase]: 4003/7219 cut-off events. [2023-11-06 22:14:06,374 INFO L125 PetriNetUnfolderBase]: For 27304/27306 co-relation queries the response was YES. [2023-11-06 22:14:06,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 7219 events. 4003/7219 cut-off events. For 27304/27306 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45786 event pairs, 2487 based on Foata normal form. 9/7228 useless extension candidates. Maximal degree in co-relation 29009. Up to 4298 conditions per place. [2023-11-06 22:14:06,512 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 102 selfloop transitions, 18 changer transitions 5/126 dead transitions. [2023-11-06 22:14:06,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 1116 flow [2023-11-06 22:14:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2065 transitions. [2023-11-06 22:14:06,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978805394990366 [2023-11-06 22:14:06,517 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2065 transitions. [2023-11-06 22:14:06,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2065 transitions. [2023-11-06 22:14:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:06,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2065 transitions. [2023-11-06 22:14:06,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.5) internal successors, (2065), 10 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states 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 22:14:06,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:06,527 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:06,527 INFO L175 Difference]: Start difference. First operand has 115 places, 71 transitions, 549 flow. Second operand 10 states and 2065 transitions. [2023-11-06 22:14:06,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 1116 flow [2023-11-06 22:14:06,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 1039 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-11-06 22:14:06,639 INFO L231 Difference]: Finished difference. Result has 111 places, 72 transitions, 555 flow [2023-11-06 22:14:06,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=555, PETRI_PLACES=111, PETRI_TRANSITIONS=72} [2023-11-06 22:14:06,639 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2023-11-06 22:14:06,640 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 72 transitions, 555 flow [2023-11-06 22:14:06,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:06,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:06,640 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:06,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:06,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:06,841 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:06,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -527109794, now seen corresponding path program 6 times [2023-11-06 22:14:06,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:06,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989159975] [2023-11-06 22:14:06,842 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:14:06,842 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 22:14:06,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:06,843 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:06,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (34)] Waiting until timeout for monitored process [2023-11-06 22:14:07,087 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-06 22:14:07,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:07,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:14:07,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:07,474 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:14:07,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:14:07,484 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 89 treesize of output 81 [2023-11-06 22:14:07,494 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 81 treesize of output 73 [2023-11-06 22:14:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:07,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:07,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989159975] [2023-11-06 22:14:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989159975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:07,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:07,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:07,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477982750] [2023-11-06 22:14:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:09,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:14:09,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 72 transitions, 555 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:09,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:09,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:14:09,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:12,013 INFO L124 PetriNetUnfolderBase]: 4000/7202 cut-off events. [2023-11-06 22:14:12,013 INFO L125 PetriNetUnfolderBase]: For 24050/24052 co-relation queries the response was YES. [2023-11-06 22:14:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27818 conditions, 7202 events. 4000/7202 cut-off events. For 24050/24052 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45678 event pairs, 2487 based on Foata normal form. 3/7205 useless extension candidates. Maximal degree in co-relation 27779. Up to 4298 conditions per place. [2023-11-06 22:14:12,106 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 95 selfloop transitions, 16 changer transitions 12/124 dead transitions. [2023-11-06 22:14:12,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1102 flow [2023-11-06 22:14:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2061 transitions. [2023-11-06 22:14:12,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39710982658959537 [2023-11-06 22:14:12,110 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2061 transitions. [2023-11-06 22:14:12,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2061 transitions. [2023-11-06 22:14:12,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:12,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2061 transitions. [2023-11-06 22:14:12,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.1) internal successors, (2061), 10 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states 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 22:14:12,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:12,118 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:12,118 INFO L175 Difference]: Start difference. First operand has 111 places, 72 transitions, 555 flow. Second operand 10 states and 2061 transitions. [2023-11-06 22:14:12,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1102 flow [2023-11-06 22:14:12,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 1053 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-06 22:14:12,202 INFO L231 Difference]: Finished difference. Result has 113 places, 70 transitions, 527 flow [2023-11-06 22:14:12,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=527, PETRI_PLACES=113, PETRI_TRANSITIONS=70} [2023-11-06 22:14:12,203 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2023-11-06 22:14:12,203 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 70 transitions, 527 flow [2023-11-06 22:14:12,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:12,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:12,204 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:12,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:12,404 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:12,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1929253556, now seen corresponding path program 7 times [2023-11-06 22:14:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666114511] [2023-11-06 22:14:12,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:14:12,405 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 22:14:12,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:12,406 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:12,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (35)] Waiting until timeout for monitored process [2023-11-06 22:14:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:14:12,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:12,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:12,953 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 22:14:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:12,970 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 11 treesize of output 7 [2023-11-06 22:14:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:13,006 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 22:14:13,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:13,023 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 11 treesize of output 7 [2023-11-06 22:14:13,495 INFO L322 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-11-06 22:14:13,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-11-06 22:14:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:13,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:13,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666114511] [2023-11-06 22:14:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666114511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:13,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:13,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:13,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369503440] [2023-11-06 22:14:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:16,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:14:16,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 70 transitions, 527 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:16,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:16,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:14:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:19,740 INFO L124 PetriNetUnfolderBase]: 4000/7210 cut-off events. [2023-11-06 22:14:19,741 INFO L125 PetriNetUnfolderBase]: For 26513/26513 co-relation queries the response was YES. [2023-11-06 22:14:19,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28840 conditions, 7210 events. 4000/7210 cut-off events. For 26513/26513 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45690 event pairs, 2538 based on Foata normal form. 1/7210 useless extension candidates. Maximal degree in co-relation 28801. Up to 4298 conditions per place. [2023-11-06 22:14:19,816 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 107 selfloop transitions, 17 changer transitions 7/132 dead transitions. [2023-11-06 22:14:19,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 1185 flow [2023-11-06 22:14:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2066 transitions. [2023-11-06 22:14:19,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980732177263969 [2023-11-06 22:14:19,819 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2066 transitions. [2023-11-06 22:14:19,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2066 transitions. [2023-11-06 22:14:19,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:19,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2066 transitions. [2023-11-06 22:14:19,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states 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 22:14:19,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:19,829 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:19,830 INFO L175 Difference]: Start difference. First operand has 113 places, 70 transitions, 527 flow. Second operand 10 states and 2066 transitions. [2023-11-06 22:14:19,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 1185 flow [2023-11-06 22:14:19,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 132 transitions, 1109 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-11-06 22:14:19,930 INFO L231 Difference]: Finished difference. Result has 114 places, 77 transitions, 632 flow [2023-11-06 22:14:19,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=632, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2023-11-06 22:14:19,931 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2023-11-06 22:14:19,931 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 632 flow [2023-11-06 22:14:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:19,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:19,931 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:19,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:20,132 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:20,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:20,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2133141088, now seen corresponding path program 8 times [2023-11-06 22:14:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486132100] [2023-11-06 22:14:20,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:14:20,133 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 22:14:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:20,134 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:20,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (36)] Waiting until timeout for monitored process [2023-11-06 22:14:20,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:14:20,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:20,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:14:20,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:20,816 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:14:20,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:14:20,824 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 89 treesize of output 81 [2023-11-06 22:14:20,831 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 81 treesize of output 73 [2023-11-06 22:14:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:20,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:20,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:20,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486132100] [2023-11-06 22:14:20,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486132100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:20,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:20,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:20,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425860183] [2023-11-06 22:14:20,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:20,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:20,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:23,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:14:23,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 632 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:23,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:23,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:14:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:25,420 INFO L124 PetriNetUnfolderBase]: 3991/7191 cut-off events. [2023-11-06 22:14:25,421 INFO L125 PetriNetUnfolderBase]: For 25071/25073 co-relation queries the response was YES. [2023-11-06 22:14:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27839 conditions, 7191 events. 3991/7191 cut-off events. For 25071/25073 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45623 event pairs, 2500 based on Foata normal form. 7/7198 useless extension candidates. Maximal degree in co-relation 27797. Up to 4298 conditions per place. [2023-11-06 22:14:25,496 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 103 selfloop transitions, 20 changer transitions 5/129 dead transitions. [2023-11-06 22:14:25,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 1173 flow [2023-11-06 22:14:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2068 transitions. [2023-11-06 22:14:25,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984585741811175 [2023-11-06 22:14:25,500 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2068 transitions. [2023-11-06 22:14:25,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2068 transitions. [2023-11-06 22:14:25,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:25,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2068 transitions. [2023-11-06 22:14:25,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.8) internal successors, (2068), 10 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states 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 22:14:25,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:25,508 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:25,508 INFO L175 Difference]: Start difference. First operand has 114 places, 77 transitions, 632 flow. Second operand 10 states and 2068 transitions. [2023-11-06 22:14:25,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 1173 flow [2023-11-06 22:14:25,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 129 transitions, 1131 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 22:14:25,582 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 731 flow [2023-11-06 22:14:25,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=731, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2023-11-06 22:14:25,582 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2023-11-06 22:14:25,583 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 731 flow [2023-11-06 22:14:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:25,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:25,583 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:25,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (36)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:25,784 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:25,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1388710362, now seen corresponding path program 9 times [2023-11-06 22:14:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:25,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573266051] [2023-11-06 22:14:25,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:14:25,785 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 22:14:25,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:25,786 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (37)] Waiting until timeout for monitored process [2023-11-06 22:14:26,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:14:26,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:26,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:14:26,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:26,268 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:14:26,269 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 153 treesize of output 145 [2023-11-06 22:14:26,278 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 22:14:26,279 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 145 treesize of output 137 [2023-11-06 22:14:26,635 INFO L322 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-11-06 22:14:26,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-11-06 22:14:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:26,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:26,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573266051] [2023-11-06 22:14:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573266051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:26,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421198459] [2023-11-06 22:14:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:28,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 519 [2023-11-06 22:14:28,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 731 flow. Second operand has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:14:28,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:28,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 519 [2023-11-06 22:14:28,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:31,238 INFO L124 PetriNetUnfolderBase]: 3988/7188 cut-off events. [2023-11-06 22:14:31,238 INFO L125 PetriNetUnfolderBase]: For 24834/24836 co-relation queries the response was YES. [2023-11-06 22:14:31,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 7188 events. 3988/7188 cut-off events. For 24834/24836 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45623 event pairs, 2498 based on Foata normal form. 1/7189 useless extension candidates. Maximal degree in co-relation 26883. Up to 4298 conditions per place. [2023-11-06 22:14:31,299 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 98 selfloop transitions, 21 changer transitions 7/127 dead transitions. [2023-11-06 22:14:31,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 127 transitions, 1225 flow [2023-11-06 22:14:31,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2073 transitions. [2023-11-06 22:14:31,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39942196531791907 [2023-11-06 22:14:31,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2073 transitions. [2023-11-06 22:14:31,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2073 transitions. [2023-11-06 22:14:31,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:31,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2073 transitions. [2023-11-06 22:14:31,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states 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 22:14:31,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:31,313 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:31,313 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 731 flow. Second operand 10 states and 2073 transitions. [2023-11-06 22:14:31,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 127 transitions, 1225 flow [2023-11-06 22:14:31,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 127 transitions, 1183 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-06 22:14:31,407 INFO L231 Difference]: Finished difference. Result has 127 places, 84 transitions, 773 flow [2023-11-06 22:14:31,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=773, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2023-11-06 22:14:31,408 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2023-11-06 22:14:31,408 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 773 flow [2023-11-06 22:14:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:14:31,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:31,408 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:31,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (37)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:31,609 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:31,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash -524484018, now seen corresponding path program 10 times [2023-11-06 22:14:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398654031] [2023-11-06 22:14:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:14:31,610 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 22:14:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:31,611 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:31,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (38)] Waiting until timeout for monitored process [2023-11-06 22:14:31,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:14:31,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:31,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:14:31,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:32,306 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:14:32,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:14:32,315 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 89 treesize of output 81 [2023-11-06 22:14:32,323 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 81 treesize of output 73 [2023-11-06 22:14:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:32,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:32,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:32,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398654031] [2023-11-06 22:14:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398654031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:32,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733257277] [2023-11-06 22:14:32,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:32,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:32,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:34,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 519 [2023-11-06 22:14:34,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 773 flow. Second operand has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:34,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:34,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 519 [2023-11-06 22:14:34,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:36,742 INFO L124 PetriNetUnfolderBase]: 3986/7186 cut-off events. [2023-11-06 22:14:36,742 INFO L125 PetriNetUnfolderBase]: For 23968/23970 co-relation queries the response was YES. [2023-11-06 22:14:36,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26753 conditions, 7186 events. 3986/7186 cut-off events. For 23968/23970 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45532 event pairs, 2500 based on Foata normal form. 1/7187 useless extension candidates. Maximal degree in co-relation 26706. Up to 4298 conditions per place. [2023-11-06 22:14:36,798 INFO L140 encePairwiseOnDemand]: 507/519 looper letters, 96 selfloop transitions, 19 changer transitions 12/128 dead transitions. [2023-11-06 22:14:36,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 128 transitions, 1241 flow [2023-11-06 22:14:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:14:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:14:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2064 transitions. [2023-11-06 22:14:36,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976878612716763 [2023-11-06 22:14:36,801 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2064 transitions. [2023-11-06 22:14:36,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2064 transitions. [2023-11-06 22:14:36,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:36,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2064 transitions. [2023-11-06 22:14:36,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 206.4) internal successors, (2064), 10 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 22:14:36,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:36,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 519.0) internal successors, (5709), 11 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states 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 22:14:36,809 INFO L175 Difference]: Start difference. First operand has 127 places, 84 transitions, 773 flow. Second operand 10 states and 2064 transitions. [2023-11-06 22:14:36,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 128 transitions, 1241 flow [2023-11-06 22:14:36,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 128 transitions, 1183 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-06 22:14:36,882 INFO L231 Difference]: Finished difference. Result has 128 places, 82 transitions, 735 flow [2023-11-06 22:14:36,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=735, PETRI_PLACES=128, PETRI_TRANSITIONS=82} [2023-11-06 22:14:36,882 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2023-11-06 22:14:36,883 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 82 transitions, 735 flow [2023-11-06 22:14:36,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.72727272727272) internal successors, (2208), 11 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states 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 22:14:36,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:36,883 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:36,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:37,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:37,084 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:37,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 913184672, now seen corresponding path program 11 times [2023-11-06 22:14:37,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914205859] [2023-11-06 22:14:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:14:37,085 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 22:14:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:37,086 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:37,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (39)] Waiting until timeout for monitored process [2023-11-06 22:14:37,522 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:14:37,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:37,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:14:37,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:37,708 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 22:14:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:37,725 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 11 treesize of output 7 [2023-11-06 22:14:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:37,750 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 22:14:37,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:37,762 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 11 treesize of output 7 [2023-11-06 22:14:38,354 INFO L322 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-11-06 22:14:38,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-11-06 22:14:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:38,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:38,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:38,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914205859] [2023-11-06 22:14:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914205859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:38,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:14:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921327720] [2023-11-06 22:14:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:38,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:41,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 519 [2023-11-06 22:14:41,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 82 transitions, 735 flow. Second operand has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:14:41,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:41,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 519 [2023-11-06 22:14:41,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:44,453 INFO L124 PetriNetUnfolderBase]: 3989/7131 cut-off events. [2023-11-06 22:14:44,453 INFO L125 PetriNetUnfolderBase]: For 24914/24916 co-relation queries the response was YES. [2023-11-06 22:14:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26726 conditions, 7131 events. 3989/7131 cut-off events. For 24914/24916 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45331 event pairs, 2906 based on Foata normal form. 1/7130 useless extension candidates. Maximal degree in co-relation 26679. Up to 6435 conditions per place. [2023-11-06 22:14:44,534 INFO L140 encePairwiseOnDemand]: 506/519 looper letters, 119 selfloop transitions, 20 changer transitions 7/147 dead transitions. [2023-11-06 22:14:44,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 147 transitions, 1496 flow [2023-11-06 22:14:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:14:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:14:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2274 transitions. [2023-11-06 22:14:44,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983184445612191 [2023-11-06 22:14:44,542 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2274 transitions. [2023-11-06 22:14:44,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2274 transitions. [2023-11-06 22:14:44,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:44,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2274 transitions. [2023-11-06 22:14:44,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.72727272727272) internal successors, (2274), 11 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states 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 22:14:44,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 519.0) internal successors, (6228), 12 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states 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 22:14:44,552 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 519.0) internal successors, (6228), 12 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states 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 22:14:44,552 INFO L175 Difference]: Start difference. First operand has 128 places, 82 transitions, 735 flow. Second operand 11 states and 2274 transitions. [2023-11-06 22:14:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 147 transitions, 1496 flow [2023-11-06 22:14:44,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 147 transitions, 1428 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-06 22:14:44,628 INFO L231 Difference]: Finished difference. Result has 129 places, 87 transitions, 830 flow [2023-11-06 22:14:44,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=519, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=830, PETRI_PLACES=129, PETRI_TRANSITIONS=87} [2023-11-06 22:14:44,629 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2023-11-06 22:14:44,629 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 87 transitions, 830 flow [2023-11-06 22:14:44,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 201.72727272727272) internal successors, (2219), 11 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 22:14:44,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:44,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:44,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (39)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:44,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:44,832 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-06 22:14:44,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1373647338, now seen corresponding path program 12 times [2023-11-06 22:14:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:14:44,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549149389] [2023-11-06 22:14:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:14:44,833 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 22:14:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:14:44,834 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 22:14:44,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_081dc741-819e-4b0f-a6fa-acb85da8119c/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 (40)] Waiting until timeout for monitored process [2023-11-06 22:14:45,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-06 22:14:45,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:45,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:14:45,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:45,183 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 42 treesize of output 38 [2023-11-06 22:14:45,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:14:45,764 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:14:45,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 42 [2023-11-06 22:14:46,375 INFO L322 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-06 22:14:46,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-11-06 22:14:46,391 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 89 treesize of output 81 [2023-11-06 22:14:46,411 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 81 treesize of output 73 [2023-11-06 22:14:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:14:46,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:14:46,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:14:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549149389] [2023-11-06 22:14:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549149389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:46,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:14:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460705707] [2023-11-06 22:14:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:46,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:14:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:14:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:14:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:14:54,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:14:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 519 [2023-11-06 22:14:56,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 87 transitions, 830 flow. Second operand has 12 states, 12 states have (on average 196.58333333333334) internal successors, (2359), 12 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states 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 22:14:56,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:56,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 519 [2023-11-06 22:14:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:59,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]