./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:51,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:52,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:24:52,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:52,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:52,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:52,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:52,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:52,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:52,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:52,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:52,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:52,169 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:52,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:52,176 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:52,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:52,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:52,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:52,178 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:52,179 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:52,179 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:52,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:52,180 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:52,181 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:52,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:52,182 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:52,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:52,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:52,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:52,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:52,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:52,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:52,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:52,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:52,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:52,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:52,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:52,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:52,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:52,187 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_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-21 22:24:52,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:52,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:52,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:52,581 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:52,582 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:52,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-21 22:24:56,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:56,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:56,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-21 22:24:56,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/d167ff424/17a9fd2ac7f944d0b8ef482462e6ad06/FLAG13d763cc0 [2023-11-21 22:24:56,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/d167ff424/17a9fd2ac7f944d0b8ef482462e6ad06 [2023-11-21 22:24:56,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:56,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:56,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:56,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:56,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:56,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:56" (1/1) ... [2023-11-21 22:24:56,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4130bda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:56, skipping insertion in model container [2023-11-21 22:24:56,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:56" (1/1) ... [2023-11-21 22:24:56,368 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:56,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:56,604 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) [2023-11-21 22:24:56,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ea49ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:56, skipping insertion in model container [2023-11-21 22:24:56,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:56,606 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:24:56,608 INFO L158 Benchmark]: Toolchain (without parser) took 285.61ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 102.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:24:56,609 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 159.4MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:24:56,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.38ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 102.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 22:24:56,611 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 159.4MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.38ms. Allocated memory is still 159.4MB. Free memory was 112.5MB in the beginning and 102.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:59,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:59,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:24:59,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:59,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:59,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:59,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:59,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:59,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:59,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:59,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:59,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:59,979 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:59,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:59,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:59,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:59,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:59,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:59,984 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:59,986 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:59,986 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:59,987 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:59,987 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:59,988 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:24:59,988 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:24:59,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:59,990 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:59,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:59,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:59,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:59,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:59,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:59,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:59,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:59,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:59,995 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:24:59,996 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:24:59,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:59,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:59,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:59,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:59,998 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:24:59,998 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_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-21 22:25:00,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:00,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:00,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:00,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:00,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:00,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-21 22:25:03,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:04,254 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:04,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-21 22:25:04,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/bce6ec0c2/be91c4ca05f440a18cf22b71d5b06bc9/FLAG7467ba481 [2023-11-21 22:25:04,293 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/data/bce6ec0c2/be91c4ca05f440a18cf22b71d5b06bc9 [2023-11-21 22:25:04,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:04,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:04,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:04,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:04,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:04,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:04,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4157dae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04, skipping insertion in model container [2023-11-21 22:25:04,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:04,358 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:04,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:04,722 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:25:04,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:04,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:04,816 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:04,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:04,885 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:04,893 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:04,899 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:04,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04 WrapperNode [2023-11-21 22:25:04,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:04,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:04,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:04,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:04,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:04,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:04,985 INFO L138 Inliner]: procedures = 28, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 284 [2023-11-21 22:25:04,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:04,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:04,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:04,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:05,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:05,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:05,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:05,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:05,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (1/1) ... [2023-11-21 22:25:05,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:05,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:05,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:05,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:25:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:25:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:25:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:25:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:25:05,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:25:05,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:25:05,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:25:05,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:25:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:25:05,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:25:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:25:05,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:05,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:05,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:25:05,173 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:25:05,368 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:05,374 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:06,453 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:07,183 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:07,183 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 22:25:07,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:07 BoogieIcfgContainer [2023-11-21 22:25:07,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:07,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:07,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:07,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:07,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:04" (1/3) ... [2023-11-21 22:25:07,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130b8652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:07, skipping insertion in model container [2023-11-21 22:25:07,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:04" (2/3) ... [2023-11-21 22:25:07,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130b8652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:07, skipping insertion in model container [2023-11-21 22:25:07,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:07" (3/3) ... [2023-11-21 22:25:07,201 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-11-21 22:25:07,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:07,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-21 22:25:07,226 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:07,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:25:07,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 219 flow [2023-11-21 22:25:07,540 INFO L124 PetriNetUnfolderBase]: 11/96 cut-off events. [2023-11-21 22:25:07,540 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:25:07,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 11/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 276 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-21 22:25:07,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 99 transitions, 219 flow [2023-11-21 22:25:07,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 95 transitions, 208 flow [2023-11-21 22:25:07,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:07,589 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;@733db862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:07,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-21 22:25:07,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:07,596 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-21 22:25:07,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:07,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:07,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:25:07,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:07,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash 894978, now seen corresponding path program 1 times [2023-11-21 22:25:07,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:07,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214176530] [2023-11-21 22:25:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:07,624 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 [2023-11-21 22:25:07,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:07,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:07,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:07,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:25:07,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:07,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:25:07,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:07,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:07,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:07,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:07,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:08,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:08,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:25:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:08,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:08,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:08,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:08,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214176530] [2023-11-21 22:25:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214176530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:08,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967491973] [2023-11-21 22:25:08,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:08,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:08,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:08,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:08,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:08,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:10,403 INFO L124 PetriNetUnfolderBase]: 4704/7866 cut-off events. [2023-11-21 22:25:10,404 INFO L125 PetriNetUnfolderBase]: For 364/365 co-relation queries the response was YES. [2023-11-21 22:25:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14583 conditions, 7866 events. 4704/7866 cut-off events. For 364/365 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55153 event pairs, 3616 based on Foata normal form. 544/5753 useless extension candidates. Maximal degree in co-relation 14373. Up to 6434 conditions per place. [2023-11-21 22:25:10,506 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 45 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-21 22:25:10,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 88 transitions, 288 flow [2023-11-21 22:25:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-21 22:25:10,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632996632996633 [2023-11-21 22:25:10,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-21 22:25:10,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-21 22:25:10,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:10,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-21 22:25:10,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:10,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:10,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:10,546 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 208 flow. Second operand 3 states and 188 transitions. [2023-11-21 22:25:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 88 transitions, 288 flow [2023-11-21 22:25:10,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 276 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-21 22:25:10,564 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 186 flow [2023-11-21 22:25:10,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-11-21 22:25:10,569 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -8 predicate places. [2023-11-21 22:25:10,569 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 186 flow [2023-11-21 22:25:10,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:10,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:10,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:25:10,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:10,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:10,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash 894979, now seen corresponding path program 1 times [2023-11-21 22:25:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955617244] [2023-11-21 22:25:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:10,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:10,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:10,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:10,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:10,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:25:10,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:10,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-21 22:25:10,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:10,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:10,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:25:11,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:11,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:11,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:11,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:11,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:11,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:11,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:11,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:11,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:11,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955617244] [2023-11-21 22:25:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955617244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:11,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:11,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:11,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102562657] [2023-11-21 22:25:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:11,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:11,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:11,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:11,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:11,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:13,499 INFO L124 PetriNetUnfolderBase]: 4706/7872 cut-off events. [2023-11-21 22:25:13,499 INFO L125 PetriNetUnfolderBase]: For 91/92 co-relation queries the response was YES. [2023-11-21 22:25:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14416 conditions, 7872 events. 4706/7872 cut-off events. For 91/92 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55150 event pairs, 3616 based on Foata normal form. 0/5213 useless extension candidates. Maximal degree in co-relation 14380. Up to 6443 conditions per place. [2023-11-21 22:25:13,584 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 48 selfloop transitions, 7 changer transitions 0/94 dead transitions. [2023-11-21 22:25:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 94 transitions, 310 flow [2023-11-21 22:25:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2023-11-21 22:25:13,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2023-11-21 22:25:13,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 237 transitions. [2023-11-21 22:25:13,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 237 transitions. [2023-11-21 22:25:13,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:13,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 237 transitions. [2023-11-21 22:25:13,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:13,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:13,596 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:13,596 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 186 flow. Second operand 4 states and 237 transitions. [2023-11-21 22:25:13,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 94 transitions, 310 flow [2023-11-21 22:25:13,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:13,602 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 238 flow [2023-11-21 22:25:13,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2023-11-21 22:25:13,603 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2023-11-21 22:25:13,604 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 238 flow [2023-11-21 22:25:13,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:13,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:13,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:25:13,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:13,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:13,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash 27744896, now seen corresponding path program 1 times [2023-11-21 22:25:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:13,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363020713] [2023-11-21 22:25:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:13,815 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 [2023-11-21 22:25:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:13,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:13,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:13,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:13,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:14,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:14,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363020713] [2023-11-21 22:25:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363020713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:14,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:14,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205967907] [2023-11-21 22:25:14,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:14,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:14,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:14,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:14,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 99 [2023-11-21 22:25:14,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:14,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:14,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 99 [2023-11-21 22:25:14,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:15,536 INFO L124 PetriNetUnfolderBase]: 4706/7877 cut-off events. [2023-11-21 22:25:15,537 INFO L125 PetriNetUnfolderBase]: For 92/93 co-relation queries the response was YES. [2023-11-21 22:25:15,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14451 conditions, 7877 events. 4706/7877 cut-off events. For 92/93 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55184 event pairs, 3616 based on Foata normal form. 1/5222 useless extension candidates. Maximal degree in co-relation 14391. Up to 6443 conditions per place. [2023-11-21 22:25:15,609 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 54 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-11-21 22:25:15,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 372 flow [2023-11-21 22:25:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-11-21 22:25:15,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085858585858586 [2023-11-21 22:25:15,613 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-11-21 22:25:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-11-21 22:25:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:15,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-11-21 22:25:15,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:15,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:15,618 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:15,618 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 238 flow. Second operand 4 states and 241 transitions. [2023-11-21 22:25:15,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 372 flow [2023-11-21 22:25:15,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:15,623 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 249 flow [2023-11-21 22:25:15,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2023-11-21 22:25:15,625 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-21 22:25:15,625 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 249 flow [2023-11-21 22:25:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:15,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:15,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-21 22:25:15,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:15,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:15,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:15,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 860103937, now seen corresponding path program 1 times [2023-11-21 22:25:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:15,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93653597] [2023-11-21 22:25:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:15,831 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 [2023-11-21 22:25:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:15,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:15,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:15,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:15,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:15,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-21 22:25:16,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-21 22:25:16,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:25:16,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:16,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:16,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:16,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:17,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:17,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93653597] [2023-11-21 22:25:17,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93653597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:17,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:25:17,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-21 22:25:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900801799] [2023-11-21 22:25:17,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:17,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:25:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:25:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:25:18,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 249 flow. Second operand has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:18,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:21,729 INFO L124 PetriNetUnfolderBase]: 4712/7901 cut-off events. [2023-11-21 22:25:21,730 INFO L125 PetriNetUnfolderBase]: For 100/101 co-relation queries the response was YES. [2023-11-21 22:25:21,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14539 conditions, 7901 events. 4712/7901 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55331 event pairs, 3616 based on Foata normal form. 0/5243 useless extension candidates. Maximal degree in co-relation 14479. Up to 6450 conditions per place. [2023-11-21 22:25:21,812 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 48 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2023-11-21 22:25:21,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 479 flow [2023-11-21 22:25:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 529 transitions. [2023-11-21 22:25:21,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343434343434343 [2023-11-21 22:25:21,817 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 529 transitions. [2023-11-21 22:25:21,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 529 transitions. [2023-11-21 22:25:21,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:21,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 529 transitions. [2023-11-21 22:25:21,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.9) internal successors, (529), 10 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:21,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:21,828 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:21,828 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 249 flow. Second operand 10 states and 529 transitions. [2023-11-21 22:25:21,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 479 flow [2023-11-21 22:25:21,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 475 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:21,837 INFO L231 Difference]: Finished difference. Result has 105 places, 112 transitions, 413 flow [2023-11-21 22:25:21,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=413, PETRI_PLACES=105, PETRI_TRANSITIONS=112} [2023-11-21 22:25:21,840 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2023-11-21 22:25:21,840 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 112 transitions, 413 flow [2023-11-21 22:25:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:21,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:21,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:25:21,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:22,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:22,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 893418818, now seen corresponding path program 1 times [2023-11-21 22:25:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:22,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492034645] [2023-11-21 22:25:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,045 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 [2023-11-21 22:25:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:22,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:22,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:25:22,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:22,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:22,319 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-21 22:25:22,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-21 22:25:22,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:22,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:22,414 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-21 22:25:22,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-21 22:25:22,786 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-11-21 22:25:22,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 75 [2023-11-21 22:25:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:23,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:23,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492034645] [2023-11-21 22:25:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492034645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:23,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6845324] [2023-11-21 22:25:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:23,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:23,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:23,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 112 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:23,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:23,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:23,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:24,638 INFO L124 PetriNetUnfolderBase]: 4712/7630 cut-off events. [2023-11-21 22:25:24,638 INFO L125 PetriNetUnfolderBase]: For 129/130 co-relation queries the response was YES. [2023-11-21 22:25:24,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14324 conditions, 7630 events. 4712/7630 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 50614 event pairs, 3616 based on Foata normal form. 730/5976 useless extension candidates. Maximal degree in co-relation 14238. Up to 6473 conditions per place. [2023-11-21 22:25:24,710 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-21 22:25:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 551 flow [2023-11-21 22:25:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-21 22:25:24,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-21 22:25:24,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-21 22:25:24,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-21 22:25:24,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:24,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-21 22:25:24,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:24,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:24,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:24,717 INFO L175 Difference]: Start difference. First operand has 105 places, 112 transitions, 413 flow. Second operand 3 states and 184 transitions. [2023-11-21 22:25:24,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 551 flow [2023-11-21 22:25:24,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 479 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-21 22:25:24,723 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 339 flow [2023-11-21 22:25:24,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-21 22:25:24,724 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2023-11-21 22:25:24,725 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 339 flow [2023-11-21 22:25:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:24,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:24,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:25:24,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 22:25:24,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:24,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 893418819, now seen corresponding path program 1 times [2023-11-21 22:25:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799884556] [2023-11-21 22:25:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:24,933 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 [2023-11-21 22:25:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:24,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:24,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:25,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:25:25,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:25,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:25:25,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:25:25,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:25,202 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:25:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:25:25,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:25,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:25,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:25:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:25,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:25,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799884556] [2023-11-21 22:25:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799884556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:25,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:25,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:25,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972565068] [2023-11-21 22:25:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:25,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:25,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:25,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:25,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:25,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:25,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:26,634 INFO L124 PetriNetUnfolderBase]: 4712/7359 cut-off events. [2023-11-21 22:25:26,634 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-21 22:25:26,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14007 conditions, 7359 events. 4712/7359 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 45942 event pairs, 3616 based on Foata normal form. 730/5975 useless extension candidates. Maximal degree in co-relation 13993. Up to 6473 conditions per place. [2023-11-21 22:25:26,687 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-21 22:25:26,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 108 transitions, 477 flow [2023-11-21 22:25:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-21 22:25:26,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-21 22:25:26,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-21 22:25:26,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-21 22:25:26,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:26,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-21 22:25:26,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:26,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:26,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:26,693 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 339 flow. Second operand 3 states and 184 transitions. [2023-11-21 22:25:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 108 transitions, 477 flow [2023-11-21 22:25:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 108 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:26,697 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 336 flow [2023-11-21 22:25:26,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-21 22:25:26,699 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-11-21 22:25:26,699 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 336 flow [2023-11-21 22:25:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:26,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:26,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:26,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:26,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:26,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -71387461, now seen corresponding path program 1 times [2023-11-21 22:25:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153735486] [2023-11-21 22:25:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:26,904 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 [2023-11-21 22:25:26,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:26,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:26,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:27,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:25:27,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,134 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 22:25:27,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-21 22:25:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2023-11-21 22:25:27,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,233 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 22:25:27,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-21 22:25:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-21 22:25:27,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,314 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 22:25:27,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-21 22:25:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-21 22:25:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,392 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 22:25:27,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2023-11-21 22:25:27,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:27,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-21 22:25:27,514 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:25:27,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-21 22:25:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:27,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:27,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:27,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153735486] [2023-11-21 22:25:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153735486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:27,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982082762] [2023-11-21 22:25:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:27,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:27,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:27,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:27,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:27,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:27,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:27,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:27,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:28,517 INFO L124 PetriNetUnfolderBase]: 4712/7328 cut-off events. [2023-11-21 22:25:28,517 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-21 22:25:28,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13977 conditions, 7328 events. 4712/7328 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 45510 event pairs, 3616 based on Foata normal form. 69/5314 useless extension candidates. Maximal degree in co-relation 13962. Up to 6473 conditions per place. [2023-11-21 22:25:28,569 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-21 22:25:28,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 474 flow [2023-11-21 22:25:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-21 22:25:28,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-21 22:25:28,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-21 22:25:28,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-21 22:25:28,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:28,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-21 22:25:28,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:28,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:28,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:28,574 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 336 flow. Second operand 3 states and 184 transitions. [2023-11-21 22:25:28,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 474 flow [2023-11-21 22:25:28,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:28,579 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 333 flow [2023-11-21 22:25:28,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2023-11-21 22:25:28,580 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-11-21 22:25:28,580 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 333 flow [2023-11-21 22:25:28,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:28,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:28,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:28,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:28,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash -71387460, now seen corresponding path program 1 times [2023-11-21 22:25:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875477332] [2023-11-21 22:25:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:28,785 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 [2023-11-21 22:25:28,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:28,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:28,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:28,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:25:28,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:28,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:25:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:29,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,082 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:25:29,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:25:29,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:29,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:25:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:29,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:29,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:25:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:29,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:29,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875477332] [2023-11-21 22:25:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875477332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:29,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991220040] [2023-11-21 22:25:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:29,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 99 [2023-11-21 22:25:29,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:29,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:29,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 99 [2023-11-21 22:25:29,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:30,523 INFO L124 PetriNetUnfolderBase]: 4712/7297 cut-off events. [2023-11-21 22:25:30,523 INFO L125 PetriNetUnfolderBase]: For 110/111 co-relation queries the response was YES. [2023-11-21 22:25:30,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 7297 events. 4712/7297 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44946 event pairs, 3616 based on Foata normal form. 69/5314 useless extension candidates. Maximal degree in co-relation 13931. Up to 6473 conditions per place. [2023-11-21 22:25:30,579 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 70 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-11-21 22:25:30,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 471 flow [2023-11-21 22:25:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-11-21 22:25:30,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195286195286195 [2023-11-21 22:25:30,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-11-21 22:25:30,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-11-21 22:25:30,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:30,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-11-21 22:25:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:30,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:30,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:30,585 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 333 flow. Second operand 3 states and 184 transitions. [2023-11-21 22:25:30,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 471 flow [2023-11-21 22:25:30,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:30,589 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 330 flow [2023-11-21 22:25:30,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2023-11-21 22:25:30,590 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-11-21 22:25:30,591 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 330 flow [2023-11-21 22:25:30,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:30,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:30,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:30,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:30,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:30,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:30,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2081982445, now seen corresponding path program 1 times [2023-11-21 22:25:30,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:30,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728765851] [2023-11-21 22:25:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:30,795 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 [2023-11-21 22:25:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:30,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:30,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:30,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:30,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:30,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:30,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:30,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:30,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:30,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:30,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:30,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:31,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:31,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:25:31,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:31,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 22:25:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:31,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:31,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:31,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:31,248 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:25:31,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-21 22:25:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:31,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:31,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728765851] [2023-11-21 22:25:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728765851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:31,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567445610] [2023-11-21 22:25:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:31,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 99 [2023-11-21 22:25:31,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:31,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:31,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 99 [2023-11-21 22:25:31,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:32,934 INFO L124 PetriNetUnfolderBase]: 6304/9006 cut-off events. [2023-11-21 22:25:32,934 INFO L125 PetriNetUnfolderBase]: For 130/131 co-relation queries the response was YES. [2023-11-21 22:25:32,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17871 conditions, 9006 events. 6304/9006 cut-off events. For 130/131 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 46411 event pairs, 4968 based on Foata normal form. 0/6932 useless extension candidates. Maximal degree in co-relation 17854. Up to 8631 conditions per place. [2023-11-21 22:25:33,001 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 63 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2023-11-21 22:25:33,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 466 flow [2023-11-21 22:25:33,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:25:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:25:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2023-11-21 22:25:33,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767676767676768 [2023-11-21 22:25:33,004 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 236 transitions. [2023-11-21 22:25:33,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 236 transitions. [2023-11-21 22:25:33,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:33,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 236 transitions. [2023-11-21 22:25:33,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:33,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:33,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:33,009 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 330 flow. Second operand 5 states and 236 transitions. [2023-11-21 22:25:33,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 466 flow [2023-11-21 22:25:33,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:33,014 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 339 flow [2023-11-21 22:25:33,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-11-21 22:25:33,016 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-21 22:25:33,016 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 339 flow [2023-11-21 22:25:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:33,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:33,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:33,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:33,220 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-21 22:25:33,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2081982446, now seen corresponding path program 1 times [2023-11-21 22:25:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907333721] [2023-11-21 22:25:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:33,221 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 [2023-11-21 22:25:33,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:33,222 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:33,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d11477b5-1709-41e6-8812-3a99b87c2657/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:33,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:25:33,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:33,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:25:33,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:33,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:33,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:33,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-21 22:25:33,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:33,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-21 22:25:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-21 22:25:33,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:33,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-21 22:25:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:34,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-21 22:25:34,204 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:25:34,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-21 22:25:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:34,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:35,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:35,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907333721] [2023-11-21 22:25:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907333721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:35,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:25:35,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-21 22:25:35,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998604198] [2023-11-21 22:25:35,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:25:35,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:25:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:25:39,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 99 [2023-11-21 22:25:39,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 339 flow. Second operand has 12 states, 12 states have (on average 41.333333333333336) internal successors, (496), 12 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:39,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:39,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 99 [2023-11-21 22:25:39,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand