./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl --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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:48,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:48,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:07:48,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:48,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:48,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:48,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:48,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:48,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:48,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:48,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:48,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:48,843 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:48,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:48,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:48,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:48,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:48,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:48,847 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:07:48,847 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:07:48,848 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:07:48,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:48,849 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:48,849 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:48,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:48,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:48,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:48,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:48,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:48,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:48,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:48,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:48,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:48,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:48,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:48,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:48,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:48,855 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:48,856 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_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2023-11-12 02:07:49,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:49,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:49,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:49,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:49,216 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:49,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-12 02:07:52,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:52,615 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:52,615 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-12 02:07:52,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/219f87584/5e23b57dadf540beaa006054f982948e/FLAG70da7f4b5 [2023-11-12 02:07:52,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/219f87584/5e23b57dadf540beaa006054f982948e [2023-11-12 02:07:52,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:52,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:52,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:52,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:52,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:52,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693d3c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52, skipping insertion in model container [2023-11-12 02:07:52,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:52" (1/1) ... [2023-11-12 02:07:52,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:52,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:52,927 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) [2023-11-12 02:07:52,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c6706f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:52, skipping insertion in model container [2023-11-12 02:07:52,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:52,928 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:07:52,930 INFO L158 Benchmark]: Toolchain (without parser) took 284.30ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 70.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:07:52,931 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:07:52,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.27ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 70.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:07:52,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.27ms. Allocated memory is still 119.5MB. Free memory was 80.3MB in the beginning and 70.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl --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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:55,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:55,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:07:55,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:55,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:55,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:55,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:55,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:55,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:55,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:55,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:55,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:55,862 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:55,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:55,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:55,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:55,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:55,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:55,866 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:07:55,867 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:07:55,868 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:07:55,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:55,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:55,869 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:07:55,870 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:07:55,870 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:55,871 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:55,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:55,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:55,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:55,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:55,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:55,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:55,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:55,875 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:07:55,876 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:07:55,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:55,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:55,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:55,877 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:07:55,878 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:55,878 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_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2023-11-12 02:07:56,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:56,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:56,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:56,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:56,349 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:56,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-12 02:07:59,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:59,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:59,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-12 02:07:59,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/91850b92e/1326de2bd1d048d1b786981c48814cce/FLAGb99856bba [2023-11-12 02:07:59,858 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/data/91850b92e/1326de2bd1d048d1b786981c48814cce [2023-11-12 02:07:59,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:59,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:59,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:59,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:59,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:59,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb5711e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59, skipping insertion in model container [2023-11-12 02:07:59,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:00,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:00,223 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:08:00,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:00,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:00,279 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:00,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:00,322 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:00,323 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:00,332 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:00,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00 WrapperNode [2023-11-12 02:08:00,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:00,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:00,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:00,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:00,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,385 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-11-12 02:08:00,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:00,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:00,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:00,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:00,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:00,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:00,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:00,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:00,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (1/1) ... [2023-11-12 02:08:00,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:00,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:00,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:00,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:00,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:00,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:08:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:08:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:08:00,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:08:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:08:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:08:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:08:00,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:08:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:08:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:08:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:08:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:08:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:00,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:08:00,550 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:08:00,703 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:00,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:08:01,558 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:08:01,711 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:08:01,712 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:08:01,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:01 BoogieIcfgContainer [2023-11-12 02:08:01,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:08:01,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:08:01,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:08:01,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:08:01,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:59" (1/3) ... [2023-11-12 02:08:01,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d77164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:01, skipping insertion in model container [2023-11-12 02:08:01,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:00" (2/3) ... [2023-11-12 02:08:01,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d77164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:08:01, skipping insertion in model container [2023-11-12 02:08:01,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:08:01" (3/3) ... [2023-11-12 02:08:01,727 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2023-11-12 02:08:01,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:08:01,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-12 02:08:01,752 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:08:01,899 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:08:01,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 190 transitions, 401 flow [2023-11-12 02:08:02,132 INFO L124 PetriNetUnfolderBase]: 12/187 cut-off events. [2023-11-12 02:08:02,132 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:08:02,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 187 events. 12/187 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-11-12 02:08:02,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 190 transitions, 401 flow [2023-11-12 02:08:02,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 182 transitions, 382 flow [2023-11-12 02:08:02,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:02,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 182 transitions, 382 flow [2023-11-12 02:08:02,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 182 transitions, 382 flow [2023-11-12 02:08:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 182 transitions, 382 flow [2023-11-12 02:08:02,247 INFO L124 PetriNetUnfolderBase]: 12/182 cut-off events. [2023-11-12 02:08:02,247 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:08:02,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 182 events. 12/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 223 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-11-12 02:08:02,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 3264 [2023-11-12 02:08:35,837 INFO L134 LiptonReduction]: Checked pairs total: 3767 [2023-11-12 02:08:35,838 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-11-12 02:08:35,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:35,865 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;@5d034c6a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:35,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-12 02:08:35,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:35,868 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:08:35,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:35,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:35,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:08:35,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:35,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash 24360, now seen corresponding path program 1 times [2023-11-12 02:08:35,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566637234] [2023-11-12 02:08:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:35,893 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 [2023-11-12 02:08:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:35,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:35,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:36,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:08:36,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:36,216 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:08:36,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,254 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,332 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,393 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-12 02:08:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:36,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,667 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:08:36,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:36,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:36,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:36,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566637234] [2023-11-12 02:08:36,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566637234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:36,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:36,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088713503] [2023-11-12 02:08:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:36,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:36,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:36,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 375 [2023-11-12 02:08:36,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:36,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:36,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 375 [2023-11-12 02:08:36,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:37,663 INFO L124 PetriNetUnfolderBase]: 1817/2564 cut-off events. [2023-11-12 02:08:37,664 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-12 02:08:37,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 2564 events. 1817/2564 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10365 event pairs, 1428 based on Foata normal form. 0/1026 useless extension candidates. Maximal degree in co-relation 4490. Up to 2562 conditions per place. [2023-11-12 02:08:37,695 INFO L140 encePairwiseOnDemand]: 363/375 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-12 02:08:37,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 190 flow [2023-11-12 02:08:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-11-12 02:08:37,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-12 02:08:37,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-11-12 02:08:37,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-11-12 02:08:37,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:37,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-11-12 02:08:37,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:37,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:37,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:37,778 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 120 flow. Second operand 3 states and 525 transitions. [2023-11-12 02:08:37,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 190 flow [2023-11-12 02:08:37,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:08:37,796 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 100 flow [2023-11-12 02:08:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-12 02:08:37,803 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-12 02:08:37,803 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 100 flow [2023-11-12 02:08:37,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:37,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:37,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:08:37,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-12 02:08:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:08:38,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 24446, now seen corresponding path program 1 times [2023-11-12 02:08:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677987723] [2023-11-12 02:08:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:38,018 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 [2023-11-12 02:08:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:38,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:38,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:38,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:38,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:38,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:38,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677987723] [2023-11-12 02:08:38,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677987723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:38,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:38,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544895044] [2023-11-12 02:08:38,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:38,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:38,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:38,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 375 [2023-11-12 02:08:38,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:38,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 375 [2023-11-12 02:08:38,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:38,910 INFO L124 PetriNetUnfolderBase]: 1817/2566 cut-off events. [2023-11-12 02:08:38,910 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:08:38,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2566 events. 1817/2566 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10349 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5147. Up to 2565 conditions per place. [2023-11-12 02:08:38,937 INFO L140 encePairwiseOnDemand]: 370/375 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-12 02:08:38,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 194 flow [2023-11-12 02:08:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:38,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-11-12 02:08:38,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-12 02:08:38,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-11-12 02:08:38,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-11-12 02:08:38,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:38,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-11-12 02:08:38,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,950 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 100 flow. Second operand 3 states and 525 transitions. [2023-11-12 02:08:38,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 194 flow [2023-11-12 02:08:38,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:38,953 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 108 flow [2023-11-12 02:08:38,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-12 02:08:38,954 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-12 02:08:38,954 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 108 flow [2023-11-12 02:08:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:38,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:38,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:08:38,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:39,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:08:39,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:39,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 24361, now seen corresponding path program 1 times [2023-11-12 02:08:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408872118] [2023-11-12 02:08:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:39,170 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 [2023-11-12 02:08:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:39,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:39,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:39,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:08:39,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:39,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-12 02:08:39,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-12 02:08:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:39,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,444 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:39,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,568 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:39,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:39,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:39,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:39,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:39,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408872118] [2023-11-12 02:08:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408872118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:39,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939186947] [2023-11-12 02:08:39,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:39,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:39,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:39,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 375 [2023-11-12 02:08:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:39,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:39,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 375 [2023-11-12 02:08:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:40,577 INFO L124 PetriNetUnfolderBase]: 1817/2565 cut-off events. [2023-11-12 02:08:40,577 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:08:40,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10323 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5161. Up to 2565 conditions per place. [2023-11-12 02:08:40,599 INFO L140 encePairwiseOnDemand]: 372/375 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-12 02:08:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 196 flow [2023-11-12 02:08:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-11-12 02:08:40,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45866666666666667 [2023-11-12 02:08:40,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-11-12 02:08:40,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-11-12 02:08:40,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:40,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-11-12 02:08:40,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,611 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 108 flow. Second operand 3 states and 516 transitions. [2023-11-12 02:08:40,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 196 flow [2023-11-12 02:08:40,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 192 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:40,613 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 112 flow [2023-11-12 02:08:40,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-12 02:08:40,615 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-12 02:08:40,615 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 112 flow [2023-11-12 02:08:40,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:40,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:40,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:08:40,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:08:40,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:40,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 757906, now seen corresponding path program 1 times [2023-11-12 02:08:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049286058] [2023-11-12 02:08:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:40,830 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 [2023-11-12 02:08:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:40,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:40,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:40,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:08:40,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:40,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:40,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,009 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:08:41,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2023-11-12 02:08:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-12 02:08:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,060 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:08:41,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:08:41,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-12 02:08:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:41,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:08:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:41,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:41,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049286058] [2023-11-12 02:08:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049286058] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:08:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:08:41,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-12 02:08:41,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490471937] [2023-11-12 02:08:41,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:42,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 375 [2023-11-12 02:08:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 375 [2023-11-12 02:08:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:42,850 INFO L124 PetriNetUnfolderBase]: 1442/2064 cut-off events. [2023-11-12 02:08:42,850 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:08:42,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 2064 events. 1442/2064 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8032 event pairs, 1128 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 4159. Up to 2064 conditions per place. [2023-11-12 02:08:42,868 INFO L140 encePairwiseOnDemand]: 372/375 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-12 02:08:42,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 190 flow [2023-11-12 02:08:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-11-12 02:08:42,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328888888888889 [2023-11-12 02:08:42,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-11-12 02:08:42,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-11-12 02:08:42,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:42,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-11-12 02:08:42,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,879 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 112 flow. Second operand 3 states and 487 transitions. [2023-11-12 02:08:42,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 190 flow [2023-11-12 02:08:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:42,882 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 104 flow [2023-11-12 02:08:42,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-12 02:08:42,883 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-12 02:08:42,883 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 104 flow [2023-11-12 02:08:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:42,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:42,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:08:42,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:43,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:08:43,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:43,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash 757907, now seen corresponding path program 1 times [2023-11-12 02:08:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292037526] [2023-11-12 02:08:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:43,098 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 [2023-11-12 02:08:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:43,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:43,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:43,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:08:43,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:43,245 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:08:43,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-12 02:08:43,288 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:08:43,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:08:43,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:43,360 INFO L322 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-12 02:08:43,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-12 02:08:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:43,416 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:08:43,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-12 02:08:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:43,468 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:08:43,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-12 02:08:43,501 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:08:43,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-12 02:08:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:08:43,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:08:43,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292037526] [2023-11-12 02:08:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292037526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:43,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:43,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894374429] [2023-11-12 02:08:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:43,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 375 [2023-11-12 02:08:43,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:43,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:43,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 375 [2023-11-12 02:08:43,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:44,274 INFO L124 PetriNetUnfolderBase]: 1067/1563 cut-off events. [2023-11-12 02:08:44,274 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:08:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 1563 events. 1067/1563 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5877 event pairs, 828 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 3159. Up to 1563 conditions per place. [2023-11-12 02:08:44,287 INFO L140 encePairwiseOnDemand]: 372/375 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-12 02:08:44,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 178 flow [2023-11-12 02:08:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-11-12 02:08:44,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497777777777778 [2023-11-12 02:08:44,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-11-12 02:08:44,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-11-12 02:08:44,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:44,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-11-12 02:08:44,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,297 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 104 flow. Second operand 3 states and 506 transitions. [2023-11-12 02:08:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 178 flow [2023-11-12 02:08:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:44,299 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 99 flow [2023-11-12 02:08:44,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-11-12 02:08:44,300 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-12 02:08:44,301 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 99 flow [2023-11-12 02:08:44,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:44,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:44,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:08:44,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:08:44,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-12 02:08:44,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash 757821, now seen corresponding path program 1 times [2023-11-12 02:08:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:08:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573268817] [2023-11-12 02:08:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:44,514 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 [2023-11-12 02:08:44,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:08:44,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:08:44,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4345d48b-817a-41ac-bd29-fb8b792e7755/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:08:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:44,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:08:44,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:08:44,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-12 02:08:44,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:44,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-12 02:08:44,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:44,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:44,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-12 02:08:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:08:44,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:08:44,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-12 02:08:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:45,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:08:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:45,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:08:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573268817] [2023-11-12 02:08:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573268817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:08:45,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:08:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:08:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487063831] [2023-11-12 02:08:45,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:08:45,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:08:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:46,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 375 [2023-11-12 02:08:46,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 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) [2023-11-12 02:08:46,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:46,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 375 [2023-11-12 02:08:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand