./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:02,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:02,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 10:42:02,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:02,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:02,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:02,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:02,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:02,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:02,959 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:02,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:02,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:02,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:02,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:02,963 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:02,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:02,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:02,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:02,965 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:02,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:02,966 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:02,966 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:02,967 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:02,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:02,968 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:02,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:02,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:02,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:02,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:02,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:02,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:02,972 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:02,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:02,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:02,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:02,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:02,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:02,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:02,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:02,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:02,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:02,975 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_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-26 10:42:03,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:03,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:03,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:03,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:03,324 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:03,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 10:42:06,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:06,749 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:06,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 10:42:06,760 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/e2c8fddca/74a3901aea1e493892b7f1570e77513a/FLAG8821f7e7d [2023-11-26 10:42:06,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/e2c8fddca/74a3901aea1e493892b7f1570e77513a [2023-11-26 10:42:06,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:06,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:06,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:06,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:06,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:06,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:06" (1/1) ... [2023-11-26 10:42:06,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2352b629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:06, skipping insertion in model container [2023-11-26 10:42:06,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:06" (1/1) ... [2023-11-26 10:42:06,820 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:07,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:07,047 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) [2023-11-26 10:42:07,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b0d734a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:07, skipping insertion in model container [2023-11-26 10:42:07,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:07,048 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 10:42:07,050 INFO L158 Benchmark]: Toolchain (without parser) took 270.06ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 106.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:42:07,051 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:07,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.34ms. Allocated memory is still 159.4MB. Free memory was 116.1MB in the beginning and 106.0MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:42:07,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.34ms. Allocated memory is still 159.4MB. Free memory was 116.1MB in the beginning and 106.0MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 137]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:09,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:09,637 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 10:42:09,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:09,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:09,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:09,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:09,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:09,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:09,697 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:09,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:09,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:09,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:09,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:09,701 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:09,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:09,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:09,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:09,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:09,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:09,705 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:09,706 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:09,706 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:09,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:09,707 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:09,708 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:42:09,709 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:42:09,709 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:09,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:09,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:09,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:09,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:09,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:09,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:09,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:09,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:09,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:09,713 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:42:09,714 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:42:09,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:09,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:09,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:09,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:09,716 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:42:09,716 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_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-26 10:42:10,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:10,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:10,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:10,136 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:10,137 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:10,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 10:42:13,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:13,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:13,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-26 10:42:13,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/0a3a452ca/50c16c9395d8428185cd339b1bcfe946/FLAG1c6b448a8 [2023-11-26 10:42:13,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/data/0a3a452ca/50c16c9395d8428185cd339b1bcfe946 [2023-11-26 10:42:13,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:13,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:13,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:13,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:13,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:13,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:13" (1/1) ... [2023-11-26 10:42:13,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abaa5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:13, skipping insertion in model container [2023-11-26 10:42:13,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:13" (1/1) ... [2023-11-26 10:42:13,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:14,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:14,080 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 10:42:14,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:14,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:14,145 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:14,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:14,225 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:14,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14 WrapperNode [2023-11-26 10:42:14,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:14,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:14,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:14,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:14,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,311 INFO L138 Inliner]: procedures = 27, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2023-11-26 10:42:14,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:14,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:14,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:14,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:14,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,375 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 15, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2023-11-26 10:42:14,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:14,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:14,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:14,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:14,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (1/1) ... [2023-11-26 10:42:14,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:14,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:14,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:14,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 10:42:14,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-26 10:42:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:42:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 10:42:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 10:42:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 10:42:14,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 10:42:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-26 10:42:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:42:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:42:14,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:42:14,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:42:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:42:14,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:42:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:14,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:14,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:42:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 10:42:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 10:42:14,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 10:42:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 10:42:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-26 10:42:14,554 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:42:14,712 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:14,715 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:15,601 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:16,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:16,126 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 10:42:16,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:16 BoogieIcfgContainer [2023-11-26 10:42:16,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:16,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:16,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:16,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:16,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:13" (1/3) ... [2023-11-26 10:42:16,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e277c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:16, skipping insertion in model container [2023-11-26 10:42:16,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:14" (2/3) ... [2023-11-26 10:42:16,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e277c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:16, skipping insertion in model container [2023-11-26 10:42:16,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:16" (3/3) ... [2023-11-26 10:42:16,140 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-26 10:42:16,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:16,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-26 10:42:16,162 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:42:16,322 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 10:42:16,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 116 transitions, 253 flow [2023-11-26 10:42:16,414 INFO L124 PetriNetUnfolderBase]: 12/113 cut-off events. [2023-11-26 10:42:16,414 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 10:42:16,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 12/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 366 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-11-26 10:42:16,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 116 transitions, 253 flow [2023-11-26 10:42:16,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 112 transitions, 242 flow [2023-11-26 10:42:16,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:16,443 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;@ccbcb8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:16,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-11-26 10:42:16,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:42:16,448 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-26 10:42:16,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:42:16,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:16,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:42:16,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:16,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:16,456 INFO L85 PathProgramCache]: Analyzing trace with hash 773175, now seen corresponding path program 1 times [2023-11-26 10:42:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433659670] [2023-11-26 10:42:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:16,470 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 [2023-11-26 10:42:16,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:16,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:16,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:42:16,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:16,672 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 [2023-11-26 10:42:16,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,691 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 [2023-11-26 10:42:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,713 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 [2023-11-26 10:42:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,723 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 [2023-11-26 10:42:16,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,734 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 [2023-11-26 10:42:16,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,741 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 [2023-11-26 10:42:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,787 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 [2023-11-26 10:42:16,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,797 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 [2023-11-26 10:42:16,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,818 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 [2023-11-26 10:42:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,828 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 [2023-11-26 10:42:16,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,850 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 [2023-11-26 10:42:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,876 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 [2023-11-26 10:42:16,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,889 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 [2023-11-26 10:42:16,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,895 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 [2023-11-26 10:42:16,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,905 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 11 treesize of output 1 [2023-11-26 10:42:16,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,911 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 [2023-11-26 10:42:16,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,923 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 [2023-11-26 10:42:16,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,938 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 [2023-11-26 10:42:16,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,951 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 [2023-11-26 10:42:16,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,956 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 [2023-11-26 10:42:16,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,974 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 [2023-11-26 10:42:16,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,983 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 [2023-11-26 10:42:16,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,990 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 [2023-11-26 10:42:16,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:16,998 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 [2023-11-26 10:42:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:17,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:17,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433659670] [2023-11-26 10:42:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433659670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154132450] [2023-11-26 10:42:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:17,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:17,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 116 [2023-11-26 10:42:17,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 112 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:17,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:17,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 116 [2023-11-26 10:42:17,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:18,366 INFO L124 PetriNetUnfolderBase]: 2712/5524 cut-off events. [2023-11-26 10:42:18,366 INFO L125 PetriNetUnfolderBase]: For 232/236 co-relation queries the response was YES. [2023-11-26 10:42:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 5524 events. 2712/5524 cut-off events. For 232/236 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 44007 event pairs, 1692 based on Foata normal form. 1/3606 useless extension candidates. Maximal degree in co-relation 9070. Up to 3567 conditions per place. [2023-11-26 10:42:18,435 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 45 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-11-26 10:42:18,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 326 flow [2023-11-26 10:42:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-11-26 10:42:18,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2023-11-26 10:42:18,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-11-26 10:42:18,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-11-26 10:42:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:18,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-11-26 10:42:18,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:18,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:18,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:18,468 INFO L175 Difference]: Start difference. First operand has 110 places, 112 transitions, 242 flow. Second operand 3 states and 243 transitions. [2023-11-26 10:42:18,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 326 flow [2023-11-26 10:42:18,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 314 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 10:42:18,479 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 224 flow [2023-11-26 10:42:18,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2023-11-26 10:42:18,485 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -9 predicate places. [2023-11-26 10:42:18,486 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 224 flow [2023-11-26 10:42:18,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:18,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:18,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:42:18,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:18,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:18,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash 773176, now seen corresponding path program 1 times [2023-11-26 10:42:18,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:18,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900411217] [2023-11-26 10:42:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:18,692 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 [2023-11-26 10:42:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:18,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:42:18,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:18,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-26 10:42:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,892 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 [2023-11-26 10:42:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,905 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 [2023-11-26 10:42:18,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,926 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 [2023-11-26 10:42:18,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,949 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 [2023-11-26 10:42:18,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,958 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 [2023-11-26 10:42:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,975 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 [2023-11-26 10:42:18,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:18,991 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 [2023-11-26 10:42:19,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,009 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 [2023-11-26 10:42:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,022 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 [2023-11-26 10:42:19,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,049 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 [2023-11-26 10:42:19,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,063 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 [2023-11-26 10:42:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,094 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 [2023-11-26 10:42:19,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,117 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 [2023-11-26 10:42:19,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,132 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 [2023-11-26 10:42:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,142 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 [2023-11-26 10:42:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,157 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 [2023-11-26 10:42:19,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,168 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 [2023-11-26 10:42:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,214 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 [2023-11-26 10:42:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,227 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 [2023-11-26 10:42:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,270 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 [2023-11-26 10:42:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,295 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 [2023-11-26 10:42:19,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,322 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 [2023-11-26 10:42:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:19,340 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 [2023-11-26 10:42:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:19,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:19,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900411217] [2023-11-26 10:42:19,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900411217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:19,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024354102] [2023-11-26 10:42:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:19,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:19,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:19,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:20,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 116 [2023-11-26 10:42:20,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:20,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:20,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 116 [2023-11-26 10:42:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:21,175 INFO L124 PetriNetUnfolderBase]: 2715/5533 cut-off events. [2023-11-26 10:42:21,175 INFO L125 PetriNetUnfolderBase]: For 57/61 co-relation queries the response was YES. [2023-11-26 10:42:21,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9183 conditions, 5533 events. 2715/5533 cut-off events. For 57/61 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 44044 event pairs, 1692 based on Foata normal form. 0/3610 useless extension candidates. Maximal degree in co-relation 9133. Up to 3580 conditions per place. [2023-11-26 10:42:21,236 INFO L140 encePairwiseOnDemand]: 103/116 looper letters, 49 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2023-11-26 10:42:21,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 116 transitions, 362 flow [2023-11-26 10:42:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-11-26 10:42:21,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6853448275862069 [2023-11-26 10:42:21,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-11-26 10:42:21,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-11-26 10:42:21,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:21,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-11-26 10:42:21,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:21,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:21,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:21,246 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 224 flow. Second operand 4 states and 318 transitions. [2023-11-26 10:42:21,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 116 transitions, 362 flow [2023-11-26 10:42:21,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:42:21,250 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 302 flow [2023-11-26 10:42:21,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2023-11-26 10:42:21,251 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -5 predicate places. [2023-11-26 10:42:21,252 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 302 flow [2023-11-26 10:42:21,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:21,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:21,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-26 10:42:21,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:21,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:21,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:21,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash 743046693, now seen corresponding path program 1 times [2023-11-26 10:42:21,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:21,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656572600] [2023-11-26 10:42:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:21,457 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 [2023-11-26 10:42:21,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:21,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:21,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:42:21,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:21,586 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 [2023-11-26 10:42:21,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,600 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 [2023-11-26 10:42:21,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,612 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 [2023-11-26 10:42:21,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,619 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 [2023-11-26 10:42:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,633 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 [2023-11-26 10:42:21,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,683 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 [2023-11-26 10:42:21,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,706 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 [2023-11-26 10:42:21,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,728 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 [2023-11-26 10:42:21,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,739 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 [2023-11-26 10:42:21,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,753 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 [2023-11-26 10:42:21,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,769 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 [2023-11-26 10:42:21,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,782 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 [2023-11-26 10:42:21,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,803 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 [2023-11-26 10:42:21,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,824 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 [2023-11-26 10:42:21,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,841 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 [2023-11-26 10:42:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,856 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 [2023-11-26 10:42:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,866 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 [2023-11-26 10:42:21,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,878 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 [2023-11-26 10:42:21,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,907 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 [2023-11-26 10:42:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,930 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 [2023-11-26 10:42:21,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,947 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 [2023-11-26 10:42:21,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:21,974 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 [2023-11-26 10:42:22,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:22,020 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 [2023-11-26 10:42:22,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:22,051 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 [2023-11-26 10:42:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:22,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:22,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656572600] [2023-11-26 10:42:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656572600] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:22,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:42:22,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-26 10:42:22,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613870699] [2023-11-26 10:42:22,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:42:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:42:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:42:25,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 116 [2023-11-26 10:42:25,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:25,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:25,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 116 [2023-11-26 10:42:25,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:28,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 10:42:30,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 10:42:31,554 INFO L124 PetriNetUnfolderBase]: 2724/5560 cut-off events. [2023-11-26 10:42:31,554 INFO L125 PetriNetUnfolderBase]: For 65/69 co-relation queries the response was YES. [2023-11-26 10:42:31,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 5560 events. 2724/5560 cut-off events. For 65/69 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 44222 event pairs, 1692 based on Foata normal form. 0/3637 useless extension candidates. Maximal degree in co-relation 9147. Up to 3583 conditions per place. [2023-11-26 10:42:31,612 INFO L140 encePairwiseOnDemand]: 103/116 looper letters, 49 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2023-11-26 10:42:31,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 143 transitions, 594 flow [2023-11-26 10:42:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:42:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 735 transitions. [2023-11-26 10:42:31,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336206896551724 [2023-11-26 10:42:31,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 735 transitions. [2023-11-26 10:42:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 735 transitions. [2023-11-26 10:42:31,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:31,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 735 transitions. [2023-11-26 10:42:31,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:31,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 116.0) internal successors, (1276), 11 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:31,626 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 116.0) internal successors, (1276), 11 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:31,627 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 302 flow. Second operand 10 states and 735 transitions. [2023-11-26 10:42:31,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 143 transitions, 594 flow [2023-11-26 10:42:31,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 143 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:42:31,633 INFO L231 Difference]: Finished difference. Result has 117 places, 143 transitions, 546 flow [2023-11-26 10:42:31,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=546, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2023-11-26 10:42:31,634 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 7 predicate places. [2023-11-26 10:42:31,634 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 546 flow [2023-11-26 10:42:31,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.0) internal successors, (650), 10 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:31,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:31,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:42:31,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:31,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:31,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:31,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash 743088018, now seen corresponding path program 1 times [2023-11-26 10:42:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587992057] [2023-11-26 10:42:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:31,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:31,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:31,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:31,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:31,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:42:31,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,094 INFO L349 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-26 10:42:32,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2023-11-26 10:42:32,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,154 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:32,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 10:42:32,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,180 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 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 10:42:32,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,227 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:32,228 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 10:42:32,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,257 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 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 10:42:32,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,307 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:32,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 10:42:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:32,341 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 13 [2023-11-26 10:42:32,389 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 10:42:32,390 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 [2023-11-26 10:42:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:32,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:32,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587992057] [2023-11-26 10:42:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587992057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:32,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:32,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:32,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642719394] [2023-11-26 10:42:32,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:32,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:32,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:32,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:32,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:32,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:32,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:33,616 INFO L124 PetriNetUnfolderBase]: 2724/5461 cut-off events. [2023-11-26 10:42:33,617 INFO L125 PetriNetUnfolderBase]: For 97/101 co-relation queries the response was YES. [2023-11-26 10:42:33,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9265 conditions, 5461 events. 2724/5461 cut-off events. For 97/101 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 42404 event pairs, 1692 based on Foata normal form. 344/3987 useless extension candidates. Maximal degree in co-relation 9176. Up to 3611 conditions per place. [2023-11-26 10:42:33,676 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 82 selfloop transitions, 1 changer transitions 0/141 dead transitions. [2023-11-26 10:42:33,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 141 transitions, 708 flow [2023-11-26 10:42:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:33,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:33,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:33,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:33,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:33,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:33,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:33,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:33,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:33,684 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 546 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 141 transitions, 708 flow [2023-11-26 10:42:33,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 613 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-26 10:42:33,695 INFO L231 Difference]: Finished difference. Result has 113 places, 141 transitions, 449 flow [2023-11-26 10:42:33,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=113, PETRI_TRANSITIONS=141} [2023-11-26 10:42:33,697 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-11-26 10:42:33,698 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 141 transitions, 449 flow [2023-11-26 10:42:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:33,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:33,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:42:33,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:33,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:33,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:33,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash 743088019, now seen corresponding path program 1 times [2023-11-26 10:42:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098661487] [2023-11-26 10:42:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:33,905 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 [2023-11-26 10:42:33,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:33,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:33,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:34,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:42:34,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 10:42:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-26 10:42:34,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,211 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 [2023-11-26 10:42:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,234 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 [2023-11-26 10:42:34,254 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,285 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 [2023-11-26 10:42:34,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,323 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 [2023-11-26 10:42:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,363 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 [2023-11-26 10:42:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:34,399 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 [2023-11-26 10:42:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:34,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:34,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098661487] [2023-11-26 10:42:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098661487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:34,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503795765] [2023-11-26 10:42:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:34,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:34,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 449 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:34,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:34,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:34,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:35,789 INFO L124 PetriNetUnfolderBase]: 2724/5362 cut-off events. [2023-11-26 10:42:35,790 INFO L125 PetriNetUnfolderBase]: For 77/81 co-relation queries the response was YES. [2023-11-26 10:42:35,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 5362 events. 2724/5362 cut-off events. For 77/81 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 40750 event pairs, 1692 based on Foata normal form. 344/3985 useless extension candidates. Maximal degree in co-relation 9108. Up to 3611 conditions per place. [2023-11-26 10:42:35,836 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 82 selfloop transitions, 1 changer transitions 0/139 dead transitions. [2023-11-26 10:42:35,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 139 transitions, 611 flow [2023-11-26 10:42:35,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:35,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:35,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:35,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:35,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:35,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:35,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:35,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:35,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:35,842 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 449 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 139 transitions, 611 flow [2023-11-26 10:42:35,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 139 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:35,848 INFO L231 Difference]: Finished difference. Result has 112 places, 139 transitions, 446 flow [2023-11-26 10:42:35,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=112, PETRI_TRANSITIONS=139} [2023-11-26 10:42:35,849 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2023-11-26 10:42:35,849 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 139 transitions, 446 flow [2023-11-26 10:42:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:35,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:35,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:35,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:36,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:36,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:36,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1074553101, now seen corresponding path program 1 times [2023-11-26 10:42:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493954207] [2023-11-26 10:42:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:36,054 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 [2023-11-26 10:42:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:36,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:36,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:36,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:42:36,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:36,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,252 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 [2023-11-26 10:42:36,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,304 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 [2023-11-26 10:42:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,338 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 16 treesize of output 1 [2023-11-26 10:42:36,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 10:42:36,385 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:36,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,404 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:36,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,458 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 [2023-11-26 10:42:36,484 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:36,493 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:36,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,537 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 [2023-11-26 10:42:36,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:36,571 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 [2023-11-26 10:42:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:36,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:36,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493954207] [2023-11-26 10:42:36,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493954207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:36,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:36,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009328290] [2023-11-26 10:42:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:36,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:37,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:37,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 139 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:37,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:37,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:37,826 INFO L124 PetriNetUnfolderBase]: 2724/5347 cut-off events. [2023-11-26 10:42:37,826 INFO L125 PetriNetUnfolderBase]: For 77/81 co-relation queries the response was YES. [2023-11-26 10:42:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9107 conditions, 5347 events. 2724/5347 cut-off events. For 77/81 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40474 event pairs, 1692 based on Foata normal form. 42/3683 useless extension candidates. Maximal degree in co-relation 9093. Up to 3611 conditions per place. [2023-11-26 10:42:37,867 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 82 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2023-11-26 10:42:37,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 608 flow [2023-11-26 10:42:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:37,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:37,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:37,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:37,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:37,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:37,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:37,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:37,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:37,873 INFO L175 Difference]: Start difference. First operand has 112 places, 139 transitions, 446 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:37,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 608 flow [2023-11-26 10:42:37,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 137 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:37,878 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 443 flow [2023-11-26 10:42:37,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2023-11-26 10:42:37,883 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 1 predicate places. [2023-11-26 10:42:37,883 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 443 flow [2023-11-26 10:42:37,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:37,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:37,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:37,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:38,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:38,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:38,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1074553100, now seen corresponding path program 1 times [2023-11-26 10:42:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:38,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427811572] [2023-11-26 10:42:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:38,088 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 [2023-11-26 10:42:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:38,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:38,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:38,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:42:38,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,309 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 10:42:38,309 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 [2023-11-26 10:42:38,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-26 10:42:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,385 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 15 treesize of output 1 [2023-11-26 10:42:38,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,423 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:38,423 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 10:42:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,455 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 15 treesize of output 1 [2023-11-26 10:42:38,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,495 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:38,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-26 10:42:38,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,523 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 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 10:42:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,560 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:38,561 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 10:42:38,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:38,588 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 13 [2023-11-26 10:42:38,641 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 10:42:38,641 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 [2023-11-26 10:42:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:38,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:38,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427811572] [2023-11-26 10:42:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427811572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:38,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403915652] [2023-11-26 10:42:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:38,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:39,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:39,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:39,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:39,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:39,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:39,668 INFO L124 PetriNetUnfolderBase]: 2724/5332 cut-off events. [2023-11-26 10:42:39,668 INFO L125 PetriNetUnfolderBase]: For 77/81 co-relation queries the response was YES. [2023-11-26 10:42:39,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9093 conditions, 5332 events. 2724/5332 cut-off events. For 77/81 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 40168 event pairs, 1692 based on Foata normal form. 42/3683 useless extension candidates. Maximal degree in co-relation 9078. Up to 3611 conditions per place. [2023-11-26 10:42:39,713 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 82 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2023-11-26 10:42:39,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 605 flow [2023-11-26 10:42:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:39,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:39,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:39,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:39,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:39,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:39,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:39,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:39,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:39,719 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 443 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:39,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 605 flow [2023-11-26 10:42:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 135 transitions, 604 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:39,723 INFO L231 Difference]: Finished difference. Result has 110 places, 135 transitions, 440 flow [2023-11-26 10:42:39,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=110, PETRI_TRANSITIONS=135} [2023-11-26 10:42:39,725 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 0 predicate places. [2023-11-26 10:42:39,725 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 135 transitions, 440 flow [2023-11-26 10:42:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:39,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:39,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:39,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:39,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:39,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1855712977, now seen corresponding path program 1 times [2023-11-26 10:42:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018129] [2023-11-26 10:42:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:39,930 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 [2023-11-26 10:42:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:39,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:39,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:40,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:42:40,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:40,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:40,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018129] [2023-11-26 10:42:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:40,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:40,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:42:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535783489] [2023-11-26 10:42:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:40,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 116 [2023-11-26 10:42:40,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 135 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:40,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:40,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 116 [2023-11-26 10:42:40,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:41,421 INFO L124 PetriNetUnfolderBase]: 5214/9938 cut-off events. [2023-11-26 10:42:41,421 INFO L125 PetriNetUnfolderBase]: For 147/155 co-relation queries the response was YES. [2023-11-26 10:42:41,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17176 conditions, 9938 events. 5214/9938 cut-off events. For 147/155 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 80297 event pairs, 2894 based on Foata normal form. 0/6842 useless extension candidates. Maximal degree in co-relation 17160. Up to 4058 conditions per place. [2023-11-26 10:42:41,498 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 166 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2023-11-26 10:42:41,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 222 transitions, 1051 flow [2023-11-26 10:42:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:42:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2023-11-26 10:42:41,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7672413793103449 [2023-11-26 10:42:41,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2023-11-26 10:42:41,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2023-11-26 10:42:41,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:41,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2023-11-26 10:42:41,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:41,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:41,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:41,505 INFO L175 Difference]: Start difference. First operand has 110 places, 135 transitions, 440 flow. Second operand 5 states and 445 transitions. [2023-11-26 10:42:41,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 222 transitions, 1051 flow [2023-11-26 10:42:41,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 222 transitions, 1050 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:41,512 INFO L231 Difference]: Finished difference. Result has 115 places, 137 transitions, 464 flow [2023-11-26 10:42:41,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2023-11-26 10:42:41,513 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2023-11-26 10:42:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 464 flow [2023-11-26 10:42:41,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:41,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:41,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Ended with exit code 0 [2023-11-26 10:42:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:41,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:41,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1620996515, now seen corresponding path program 1 times [2023-11-26 10:42:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061456384] [2023-11-26 10:42:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,730 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 [2023-11-26 10:42:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:41,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:41,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:42:41,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:41,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:41,938 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 10:42:41,938 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 [2023-11-26 10:42:41,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:41,957 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:41,958 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 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-26 10:42:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:41,976 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:41,976 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 10:42:41,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,019 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,019 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 10:42:42,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,032 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,032 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 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-26 10:42:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,046 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,047 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 10:42:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,082 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-26 10:42:42,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,096 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,096 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 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-26 10:42:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,114 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,114 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 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-26 10:42:42,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,170 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 10:42:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,206 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-26 10:42:42,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,241 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 10:42:42,241 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 10:42:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:42,343 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 13 [2023-11-26 10:42:42,398 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 10:42:42,399 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 [2023-11-26 10:42:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:42,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:42,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061456384] [2023-11-26 10:42:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061456384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208712817] [2023-11-26 10:42:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:42,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:42,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:42,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:42,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:42,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:44,293 INFO L124 PetriNetUnfolderBase]: 4879/9750 cut-off events. [2023-11-26 10:42:44,294 INFO L125 PetriNetUnfolderBase]: For 1037/1045 co-relation queries the response was YES. [2023-11-26 10:42:44,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17228 conditions, 9750 events. 4879/9750 cut-off events. For 1037/1045 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 82173 event pairs, 3139 based on Foata normal form. 101/6977 useless extension candidates. Maximal degree in co-relation 17209. Up to 6529 conditions per place. [2023-11-26 10:42:44,359 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 84 selfloop transitions, 1 changer transitions 0/135 dead transitions. [2023-11-26 10:42:44,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 135 transitions, 630 flow [2023-11-26 10:42:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:44,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:44,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:44,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:44,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:44,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:44,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:44,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:44,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:44,365 INFO L175 Difference]: Start difference. First operand has 115 places, 137 transitions, 464 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:44,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 135 transitions, 630 flow [2023-11-26 10:42:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 135 transitions, 626 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:44,372 INFO L231 Difference]: Finished difference. Result has 114 places, 135 transitions, 458 flow [2023-11-26 10:42:44,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=114, PETRI_TRANSITIONS=135} [2023-11-26 10:42:44,373 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 4 predicate places. [2023-11-26 10:42:44,373 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 135 transitions, 458 flow [2023-11-26 10:42:44,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:44,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:44,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:44,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:44,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:44,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:44,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1620996516, now seen corresponding path program 1 times [2023-11-26 10:42:44,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:44,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699998358] [2023-11-26 10:42:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:44,578 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 [2023-11-26 10:42:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:44,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:44,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 10:42:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:44,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:42:44,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:44,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-26 10:42:44,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-26 10:42:44,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,855 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,885 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 [2023-11-26 10:42:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:44,900 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:44,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 10:42:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,929 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 [2023-11-26 10:42:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 10:42:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,962 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 [2023-11-26 10:42:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 10:42:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:44,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:45,001 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 [2023-11-26 10:42:45,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:45,015 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 [2023-11-26 10:42:45,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:45,055 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 [2023-11-26 10:42:45,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:45,101 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 [2023-11-26 10:42:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:45,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:45,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699998358] [2023-11-26 10:42:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699998358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967456990] [2023-11-26 10:42:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:45,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:42:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:45,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:42:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:42:45,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-11-26 10:42:45,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 135 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:45,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:45,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-11-26 10:42:45,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:47,076 INFO L124 PetriNetUnfolderBase]: 4879/9679 cut-off events. [2023-11-26 10:42:47,076 INFO L125 PetriNetUnfolderBase]: For 1042/1050 co-relation queries the response was YES. [2023-11-26 10:42:47,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17151 conditions, 9679 events. 4879/9679 cut-off events. For 1042/1050 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 81577 event pairs, 3139 based on Foata normal form. 101/6987 useless extension candidates. Maximal degree in co-relation 17131. Up to 6529 conditions per place. [2023-11-26 10:42:47,140 INFO L140 encePairwiseOnDemand]: 113/116 looper letters, 84 selfloop transitions, 1 changer transitions 0/133 dead transitions. [2023-11-26 10:42:47,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 133 transitions, 624 flow [2023-11-26 10:42:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-26 10:42:47,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2023-11-26 10:42:47,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-26 10:42:47,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-26 10:42:47,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:47,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-26 10:42:47,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:47,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:47,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:47,146 INFO L175 Difference]: Start difference. First operand has 114 places, 135 transitions, 458 flow. Second operand 3 states and 244 transitions. [2023-11-26 10:42:47,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 133 transitions, 624 flow [2023-11-26 10:42:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:47,153 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 455 flow [2023-11-26 10:42:47,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-11-26 10:42:47,154 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-11-26 10:42:47,154 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 455 flow [2023-11-26 10:42:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-26 10:42:47,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 10:42:47,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-26 10:42:47,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1858545772, now seen corresponding path program 2 times [2023-11-26 10:42:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854608203] [2023-11-26 10:42:47,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:42:47,360 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 [2023-11-26 10:42:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:47,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 10:42:47,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0569306c-2888-4085-a27b-1c4f31bedb3f/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-26 10:42:47,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:42:47,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:42:47,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:42:47,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:47,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-26 10:42:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,536 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 [2023-11-26 10:42:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,549 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 [2023-11-26 10:42:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,570 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 [2023-11-26 10:42:47,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,606 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 [2023-11-26 10:42:47,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,627 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 [2023-11-26 10:42:47,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,651 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 [2023-11-26 10:42:47,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,663 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 [2023-11-26 10:42:47,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,674 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 [2023-11-26 10:42:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,681 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 [2023-11-26 10:42:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,693 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 [2023-11-26 10:42:47,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,701 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 [2023-11-26 10:42:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,714 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 [2023-11-26 10:42:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,721 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 [2023-11-26 10:42:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,733 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 [2023-11-26 10:42:47,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,740 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 [2023-11-26 10:42:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,753 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 [2023-11-26 10:42:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,774 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 [2023-11-26 10:42:47,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,798 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 [2023-11-26 10:42:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,810 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 [2023-11-26 10:42:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,821 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 [2023-11-26 10:42:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,829 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 [2023-11-26 10:42:47,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,841 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 [2023-11-26 10:42:47,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:42:47,849 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 [2023-11-26 10:42:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:48,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:42:49,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854608203] [2023-11-26 10:42:49,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854608203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:49,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:42:49,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 10:42:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354747963] [2023-11-26 10:42:49,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:42:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:42:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:42:57,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 116 [2023-11-26 10:42:57,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 455 flow. Second operand has 14 states, 14 states have (on average 65.57142857142857) internal successors, (918), 14 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:57,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:57,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 116 [2023-11-26 10:42:57,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand