./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:10:12,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:10:12,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:10:12,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:10:12,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:10:12,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:10:12,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:10:12,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:10:12,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:10:12,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:10:12,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:10:12,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:10:12,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:10:12,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:10:12,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:10:12,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:10:12,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:10:12,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:10:12,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:10:12,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:10:12,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:10:12,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:10:12,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:10:12,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:10:12,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:10:12,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:10:12,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:10:12,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:10:12,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:10:12,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:10:12,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:10:12,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:10:12,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:10:12,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:10:12,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:10:12,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:10:12,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:10:12,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:10:12,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:10:12,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:10:12,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:10:12,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:10:12,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:10:12,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:10:12,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:10:12,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:10:12,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:10:12,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:10:12,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:10:12,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:10:12,919 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:10:12,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:10:12,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:10:12,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:10:12,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:10:12,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:10:12,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:10:12,921 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:10:12,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:10:12,922 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:10:12,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:10:12,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:10:12,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:10:12,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:10:12,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:10:12,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:10:12,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:10:12,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:10:12,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:10:12,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:10:12,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:10:12,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:10:12,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:10:12,928 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:10:12,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:10:12,929 INFO L138 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_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-25 18:10:13,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:10:13,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:10:13,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:10:13,357 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:10:13,360 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:10:13,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-25 18:10:17,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:10:17,735 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:10:17,736 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-25 18:10:17,747 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/e58e3025f/866d2eecbe64444dbc7e032564601120/FLAG4f7da90fe [2022-11-25 18:10:17,779 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/e58e3025f/866d2eecbe64444dbc7e032564601120 [2022-11-25 18:10:17,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:10:17,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:10:17,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:10:17,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:10:17,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:10:17,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:17" (1/1) ... [2022-11-25 18:10:17,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b00eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:17, skipping insertion in model container [2022-11-25 18:10:17,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:17" (1/1) ... [2022-11-25 18:10:17,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:10:17,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:10:18,110 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-25 18:10:18,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:10:18,148 ERROR L326 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) [2022-11-25 18:10:18,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48c4afe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:18, skipping insertion in model container [2022-11-25 18:10:18,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:10:18,150 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:10:18,152 INFO L158 Benchmark]: Toolchain (without parser) took 365.59ms. Allocated memory is still 134.2MB. Free memory was 93.8MB in the beginning and 83.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:10:18,153 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 134.2MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:10:18,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.08ms. Allocated memory is still 134.2MB. Free memory was 93.8MB in the beginning and 83.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:10:18,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 134.2MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.08ms. Allocated memory is still 134.2MB. Free memory was 93.8MB in the beginning and 83.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:10:21,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:10:21,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:10:21,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:10:21,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:10:21,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:10:21,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:10:21,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:10:21,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:10:21,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:10:21,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:10:21,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:10:21,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:10:21,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:10:21,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:10:21,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:10:21,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:10:21,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:10:21,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:10:21,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:10:21,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:10:21,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:10:21,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:10:21,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:10:21,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:10:21,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:10:21,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:10:21,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:10:21,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:10:21,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:10:21,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:10:21,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:10:21,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:10:21,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:10:21,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:10:21,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:10:21,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:10:21,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:10:21,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:10:21,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:10:21,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:10:21,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:10:21,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:10:21,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:10:21,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:10:21,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:10:21,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:10:21,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:10:21,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:10:21,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:10:21,507 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:10:21,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:10:21,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:10:21,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:10:21,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:10:21,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:10:21,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:10:21,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:10:21,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:10:21,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:10:21,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:10:21,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:10:21,512 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:10:21,512 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:10:21,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:10:21,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:10:21,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:10:21,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:10:21,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:10:21,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:10:21,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:10:21,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:10:21,515 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:10:21,516 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:10:21,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:10:21,516 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:10:21,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:10:21,517 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:10:21,517 INFO L138 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_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-25 18:10:22,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:10:22,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:10:22,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:10:22,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:10:22,074 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:10:22,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-25 18:10:26,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:10:26,394 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:10:26,395 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-25 18:10:26,405 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/3a717d1a6/18ad164093bd4a4eaec8ded5f544d272/FLAGceaf5b477 [2022-11-25 18:10:26,439 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/data/3a717d1a6/18ad164093bd4a4eaec8ded5f544d272 [2022-11-25 18:10:26,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:10:26,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:10:26,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:10:26,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:10:26,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:10:26,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:26" (1/1) ... [2022-11-25 18:10:26,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1260168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:26, skipping insertion in model container [2022-11-25 18:10:26,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:10:26" (1/1) ... [2022-11-25 18:10:26,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:10:26,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:10:26,779 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-25 18:10:26,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:10:26,841 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:10:26,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:10:26,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-25 18:10:26,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:10:26,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:10:26,988 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-25 18:10:26,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:10:27,017 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:10:27,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27 WrapperNode [2022-11-25 18:10:27,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:10:27,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:10:27,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:10:27,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:10:27,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,088 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2022-11-25 18:10:27,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:10:27,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:10:27,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:10:27,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:10:27,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:10:27,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:10:27,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:10:27,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:10:27,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (1/1) ... [2022-11-25 18:10:27,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:10:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:10:27,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:10:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:10:27,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:10:27,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:10:27,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:10:27,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:10:27,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:10:27,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:10:27,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:10:27,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:10:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:10:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:10:27,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:10:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:10:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:10:27,301 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:10:27,518 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:10:27,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:10:28,415 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:10:28,430 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:10:28,430 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:10:28,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:10:28 BoogieIcfgContainer [2022-11-25 18:10:28,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:10:28,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:10:28,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:10:28,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:10:28,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:10:26" (1/3) ... [2022-11-25 18:10:28,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb6912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:10:28, skipping insertion in model container [2022-11-25 18:10:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:10:27" (2/3) ... [2022-11-25 18:10:28,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb6912f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:10:28, skipping insertion in model container [2022-11-25 18:10:28,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:10:28" (3/3) ... [2022-11-25 18:10:28,462 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-25 18:10:28,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:10:28,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 18:10:28,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:10:28,787 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:10:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 278 transitions, 572 flow [2022-11-25 18:10:29,056 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-11-25 18:10:29,061 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:10:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 19/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-11-25 18:10:29,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 278 transitions, 572 flow [2022-11-25 18:10:29,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 271 transitions, 554 flow [2022-11-25 18:10:29,088 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:10:29,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 271 transitions, 554 flow [2022-11-25 18:10:29,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 271 transitions, 554 flow [2022-11-25 18:10:29,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 271 transitions, 554 flow [2022-11-25 18:10:29,235 INFO L130 PetriNetUnfolder]: 19/271 cut-off events. [2022-11-25 18:10:29,236 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:10:29,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 19/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-11-25 18:10:29,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 13348 [2022-11-25 18:10:59,946 INFO L134 LiptonReduction]: Checked pairs total: 12337 [2022-11-25 18:10:59,946 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-11-25 18:10:59,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:10:59,972 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;@93a6d44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:10:59,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 18:10:59,976 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:10:59,976 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:10:59,976 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:10:59,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:10:59,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:10:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash 35949, now seen corresponding path program 1 times [2022-11-25 18:10:59,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:10:59,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104232213] [2022-11-25 18:10:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:10:59,998 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 [2022-11-25 18:10:59,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:00,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:00,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:00,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:00,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:00,290 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:00,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:00,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:00,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:00,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104232213] [2022-11-25 18:11:00,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104232213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:00,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:00,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:00,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319596360] [2022-11-25 18:11:00,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:00,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:00,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 595 [2022-11-25 18:11:00,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:00,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:00,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 595 [2022-11-25 18:11:00,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:01,131 INFO L130 PetriNetUnfolder]: 433/728 cut-off events. [2022-11-25 18:11:01,132 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-25 18:11:01,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 728 events. 433/728 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3048 event pairs, 336 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 640. Up to 366 conditions per place. [2022-11-25 18:11:01,141 INFO L137 encePairwiseOnDemand]: 591/595 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-11-25 18:11:01,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 60 transitions, 264 flow [2022-11-25 18:11:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2022-11-25 18:11:01,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2022-11-25 18:11:01,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2022-11-25 18:11:01,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2022-11-25 18:11:01,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:01,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2022-11-25 18:11:01,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,212 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 819 transitions. [2022-11-25 18:11:01,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 60 transitions, 264 flow [2022-11-25 18:11:01,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:11:01,225 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2022-11-25 18:11:01,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-11-25 18:11:01,234 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 18:11:01,235 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2022-11-25 18:11:01,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:01,237 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:11:01,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:01,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash 36111, now seen corresponding path program 1 times [2022-11-25 18:11:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:01,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907578988] [2022-11-25 18:11:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:01,453 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 [2022-11-25 18:11:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:01,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:01,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:01,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:11:01,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:01,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:01,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:01,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907578988] [2022-11-25 18:11:01,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907578988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:01,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:01,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144031197] [2022-11-25 18:11:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:01,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 595 [2022-11-25 18:11:01,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:01,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 595 [2022-11-25 18:11:01,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:01,941 INFO L130 PetriNetUnfolder]: 217/367 cut-off events. [2022-11-25 18:11:01,941 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:11:01,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 367 events. 217/367 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1284 event pairs, 168 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 736. Up to 366 conditions per place. [2022-11-25 18:11:01,944 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 31 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-11-25 18:11:01,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 146 flow [2022-11-25 18:11:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2022-11-25 18:11:01,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44873949579831934 [2022-11-25 18:11:01,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2022-11-25 18:11:01,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2022-11-25 18:11:01,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:01,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2022-11-25 18:11:01,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,960 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 801 transitions. [2022-11-25 18:11:01,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 146 flow [2022-11-25 18:11:01,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:01,962 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 88 flow [2022-11-25 18:11:01,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-11-25 18:11:01,965 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-11-25 18:11:01,965 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 88 flow [2022-11-25 18:11:01,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:01,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:01,967 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:11:01,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:02,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:02,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash 35948, now seen corresponding path program 1 times [2022-11-25 18:11:02,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:02,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572188481] [2022-11-25 18:11:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:02,189 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 [2022-11-25 18:11:02,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:02,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:02,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:02,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:11:02,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:02,319 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 18:11:02,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 18:11:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:02,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:02,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:02,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572188481] [2022-11-25 18:11:02,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572188481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:02,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:02,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559871971] [2022-11-25 18:11:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:02,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:02,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:02,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2022-11-25 18:11:02,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:02,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:02,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2022-11-25 18:11:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:02,733 INFO L130 PetriNetUnfolder]: 217/365 cut-off events. [2022-11-25 18:11:02,733 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:11:02,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 365 events. 217/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1251 event pairs, 168 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 737. Up to 365 conditions per place. [2022-11-25 18:11:02,736 INFO L137 encePairwiseOnDemand]: 593/595 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-11-25 18:11:02,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 148 flow [2022-11-25 18:11:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2022-11-25 18:11:02,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4425770308123249 [2022-11-25 18:11:02,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2022-11-25 18:11:02,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2022-11-25 18:11:02,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:02,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2022-11-25 18:11:02,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:02,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:02,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:02,757 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 88 flow. Second operand 3 states and 790 transitions. [2022-11-25 18:11:02,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 148 flow [2022-11-25 18:11:02,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 142 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:02,760 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 82 flow [2022-11-25 18:11:02,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2022-11-25 18:11:02,779 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 18:11:02,779 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 82 flow [2022-11-25 18:11:02,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:02,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:02,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:11:02,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:02,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:02,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1119058, now seen corresponding path program 1 times [2022-11-25 18:11:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:02,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585251585] [2022-11-25 18:11:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:02,984 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 [2022-11-25 18:11:02,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:02,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:03,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:03,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:11:03,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:03,218 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:03,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:03,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:03,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:03,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585251585] [2022-11-25 18:11:03,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585251585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:03,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:03,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:11:03,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283876630] [2022-11-25 18:11:03,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:03,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:03,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:04,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 595 [2022-11-25 18:11:04,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:04,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:04,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 595 [2022-11-25 18:11:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:06,024 INFO L130 PetriNetUnfolder]: 649/1089 cut-off events. [2022-11-25 18:11:06,024 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 18:11:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2217 conditions, 1089 events. 649/1089 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5088 event pairs, 504 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 2208. Up to 365 conditions per place. [2022-11-25 18:11:06,032 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 83 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2022-11-25 18:11:06,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 87 transitions, 392 flow [2022-11-25 18:11:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1339 transitions. [2022-11-25 18:11:06,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4500840336134454 [2022-11-25 18:11:06,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1339 transitions. [2022-11-25 18:11:06,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1339 transitions. [2022-11-25 18:11:06,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:06,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1339 transitions. [2022-11-25 18:11:06,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 267.8) internal successors, (1339), 5 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:06,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:06,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:06,058 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 82 flow. Second operand 5 states and 1339 transitions. [2022-11-25 18:11:06,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 87 transitions, 392 flow [2022-11-25 18:11:06,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 87 transitions, 391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:06,064 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 107 flow [2022-11-25 18:11:06,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-11-25 18:11:06,067 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-11-25 18:11:06,067 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 107 flow [2022-11-25 18:11:06,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:06,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:06,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:11:06,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:06,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1119220, now seen corresponding path program 1 times [2022-11-25 18:11:06,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:06,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851163414] [2022-11-25 18:11:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:06,287 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 [2022-11-25 18:11:06,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:06,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:06,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:06,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:11:06,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:06,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:06,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:06,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851163414] [2022-11-25 18:11:06,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851163414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:06,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:06,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:11:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465956408] [2022-11-25 18:11:06,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:06,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:06,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:06,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:06,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2022-11-25 18:11:06,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:06,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:06,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2022-11-25 18:11:06,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:07,218 INFO L130 PetriNetUnfolder]: 217/367 cut-off events. [2022-11-25 18:11:07,219 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:11:07,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 367 events. 217/367 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1251 event pairs, 168 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 754. Up to 364 conditions per place. [2022-11-25 18:11:07,224 INFO L137 encePairwiseOnDemand]: 589/595 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2022-11-25 18:11:07,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 173 flow [2022-11-25 18:11:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1304 transitions. [2022-11-25 18:11:07,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43831932773109245 [2022-11-25 18:11:07,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1304 transitions. [2022-11-25 18:11:07,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1304 transitions. [2022-11-25 18:11:07,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:07,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1304 transitions. [2022-11-25 18:11:07,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:07,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:07,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:07,248 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 107 flow. Second operand 5 states and 1304 transitions. [2022-11-25 18:11:07,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 173 flow [2022-11-25 18:11:07,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 163 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:07,252 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 124 flow [2022-11-25 18:11:07,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2022-11-25 18:11:07,256 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-11-25 18:11:07,256 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 124 flow [2022-11-25 18:11:07,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:07,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:07,258 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-11-25 18:11:07,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-25 18:11:07,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:07,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1075563186, now seen corresponding path program 2 times [2022-11-25 18:11:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:07,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476981647] [2022-11-25 18:11:07,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:07,483 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 [2022-11-25 18:11:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:07,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:07,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:11:07,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:07,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:07,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:07,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:07,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:07,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:07,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476981647] [2022-11-25 18:11:07,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476981647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:07,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:07,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-25 18:11:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111121168] [2022-11-25 18:11:07,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:11:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:11:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:08,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2022-11-25 18:11:08,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 124 flow. Second operand has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:08,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:08,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2022-11-25 18:11:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:09,129 INFO L130 PetriNetUnfolder]: 216/365 cut-off events. [2022-11-25 18:11:09,130 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-25 18:11:09,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 365 events. 216/365 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1267 event pairs, 168 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 752. Up to 362 conditions per place. [2022-11-25 18:11:09,133 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-11-25 18:11:09,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 31 transitions, 169 flow [2022-11-25 18:11:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1551 transitions. [2022-11-25 18:11:09,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43445378151260505 [2022-11-25 18:11:09,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1551 transitions. [2022-11-25 18:11:09,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1551 transitions. [2022-11-25 18:11:09,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:09,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1551 transitions. [2022-11-25 18:11:09,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:09,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:09,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:09,157 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 124 flow. Second operand 6 states and 1551 transitions. [2022-11-25 18:11:09,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 31 transitions, 169 flow [2022-11-25 18:11:09,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 153 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 18:11:09,160 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 99 flow [2022-11-25 18:11:09,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2022-11-25 18:11:09,161 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-11-25 18:11:09,161 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 99 flow [2022-11-25 18:11:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:09,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:09,164 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-11-25 18:11:09,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:09,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1075563348, now seen corresponding path program 2 times [2022-11-25 18:11:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:09,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425269413] [2022-11-25 18:11:09,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:09,388 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 [2022-11-25 18:11:09,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:09,390 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:09,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:11:09,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:11:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:09,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:11:09,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:11:09,579 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 18:11:09,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-11-25 18:11:09,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 18:11:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:09,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:09,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:09,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425269413] [2022-11-25 18:11:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425269413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:09,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125461897] [2022-11-25 18:11:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:10,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 595 [2022-11-25 18:11:10,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:10,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:10,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 595 [2022-11-25 18:11:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:10,292 INFO L130 PetriNetUnfolder]: 166/289 cut-off events. [2022-11-25 18:11:10,292 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:11:10,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 289 events. 166/289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 933 event pairs, 128 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 593. Up to 289 conditions per place. [2022-11-25 18:11:10,295 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-11-25 18:11:10,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 147 flow [2022-11-25 18:11:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2022-11-25 18:11:10,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43977591036414565 [2022-11-25 18:11:10,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2022-11-25 18:11:10,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2022-11-25 18:11:10,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:10,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2022-11-25 18:11:10,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:10,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:10,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:10,310 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 99 flow. Second operand 3 states and 785 transitions. [2022-11-25 18:11:10,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 147 flow [2022-11-25 18:11:10,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:11:10,312 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 84 flow [2022-11-25 18:11:10,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2022-11-25 18:11:10,313 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-11-25 18:11:10,313 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 84 flow [2022-11-25 18:11:10,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:10,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:10,315 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2022-11-25 18:11:10,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-25 18:11:10,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:10,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1075563350, now seen corresponding path program 1 times [2022-11-25 18:11:10,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:10,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956997036] [2022-11-25 18:11:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:10,531 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 [2022-11-25 18:11:10,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:10,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:10,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:11:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:10,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:11:10,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:10,751 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-25 18:11:10,751 INFO L350 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-25 18:11:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:10,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:10,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:10,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956997036] [2022-11-25 18:11:10,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956997036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:10,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:10,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825200788] [2022-11-25 18:11:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:11,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2022-11-25 18:11:11,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:11,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:11,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2022-11-25 18:11:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:11,339 INFO L130 PetriNetUnfolder]: 116/213 cut-off events. [2022-11-25 18:11:11,340 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:11:11,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 213 events. 116/213 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 624 event pairs, 88 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 436. Up to 213 conditions per place. [2022-11-25 18:11:11,342 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-11-25 18:11:11,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 128 flow [2022-11-25 18:11:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2022-11-25 18:11:11,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4403361344537815 [2022-11-25 18:11:11,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2022-11-25 18:11:11,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2022-11-25 18:11:11,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:11,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2022-11-25 18:11:11,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:11,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:11,357 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 84 flow. Second operand 3 states and 786 transitions. [2022-11-25 18:11:11,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 128 flow [2022-11-25 18:11:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:11,360 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 75 flow [2022-11-25 18:11:11,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2022-11-25 18:11:11,361 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-11-25 18:11:11,361 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 75 flow [2022-11-25 18:11:11,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:11,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:11,362 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2022-11-25 18:11:11,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:11,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:11,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1470714717, now seen corresponding path program 1 times [2022-11-25 18:11:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:11,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209146665] [2022-11-25 18:11:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:11,579 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 [2022-11-25 18:11:11,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:11,581 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:11,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:11:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:11,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:11,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:11,806 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-25 18:11:11,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-25 18:11:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:11,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:11,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:11,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209146665] [2022-11-25 18:11:11,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209146665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:11,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:11,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168320143] [2022-11-25 18:11:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:12,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 595 [2022-11-25 18:11:12,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:12,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:12,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 595 [2022-11-25 18:11:12,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:12,220 INFO L130 PetriNetUnfolder]: 106/193 cut-off events. [2022-11-25 18:11:12,220 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:11:12,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 193 events. 106/193 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 552 event pairs, 80 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 396. Up to 193 conditions per place. [2022-11-25 18:11:12,222 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-11-25 18:11:12,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 121 flow [2022-11-25 18:11:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2022-11-25 18:11:12,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4341736694677871 [2022-11-25 18:11:12,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2022-11-25 18:11:12,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2022-11-25 18:11:12,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:12,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2022-11-25 18:11:12,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:12,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:12,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:12,237 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 75 flow. Second operand 3 states and 775 transitions. [2022-11-25 18:11:12,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 121 flow [2022-11-25 18:11:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:12,239 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 72 flow [2022-11-25 18:11:12,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2022-11-25 18:11:12,240 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 18:11:12,241 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 72 flow [2022-11-25 18:11:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:12,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:12,242 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2022-11-25 18:11:12,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:12,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1470714716, now seen corresponding path program 1 times [2022-11-25 18:11:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:12,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551185936] [2022-11-25 18:11:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:12,460 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 [2022-11-25 18:11:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:12,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:12,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 18:11:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:12,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:11:12,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:11:12,731 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-25 18:11:12,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-25 18:11:12,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-25 18:11:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:12,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:12,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:12,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551185936] [2022-11-25 18:11:12,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551185936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:12,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:12,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:11:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231049247] [2022-11-25 18:11:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:12,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:12,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:13,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2022-11-25 18:11:13,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:13,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:13,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2022-11-25 18:11:13,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:13,231 INFO L130 PetriNetUnfolder]: 96/173 cut-off events. [2022-11-25 18:11:13,232 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:11:13,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 173 events. 96/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 480 event pairs, 72 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 356. Up to 173 conditions per place. [2022-11-25 18:11:13,234 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-11-25 18:11:13,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 114 flow [2022-11-25 18:11:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:11:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2022-11-25 18:11:13,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2022-11-25 18:11:13,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2022-11-25 18:11:13,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2022-11-25 18:11:13,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:13,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2022-11-25 18:11:13,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:13,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:13,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:13,248 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 72 flow. Second operand 3 states and 782 transitions. [2022-11-25 18:11:13,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 114 flow [2022-11-25 18:11:13,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:13,249 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 69 flow [2022-11-25 18:11:13,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-11-25 18:11:13,251 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 18:11:13,251 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 69 flow [2022-11-25 18:11:13,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:13,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:13,252 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-25 18:11:13,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:13,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:13,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1652483749, now seen corresponding path program 1 times [2022-11-25 18:11:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:13,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767472252] [2022-11-25 18:11:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:13,468 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 [2022-11-25 18:11:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:13,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:13,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 18:11:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:13,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:11:13,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:13,724 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:13,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:13,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:13,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:13,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767472252] [2022-11-25 18:11:13,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767472252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:13,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:13,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327745858] [2022-11-25 18:11:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:13,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:14,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 595 [2022-11-25 18:11:14,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:14,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:14,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 595 [2022-11-25 18:11:14,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:14,561 INFO L130 PetriNetUnfolder]: 157/282 cut-off events. [2022-11-25 18:11:14,561 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 18:11:14,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 282 events. 157/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1059 event pairs, 72 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 577. Up to 169 conditions per place. [2022-11-25 18:11:14,563 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 34 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2022-11-25 18:11:14,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 178 flow [2022-11-25 18:11:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1272 transitions. [2022-11-25 18:11:14,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42756302521008405 [2022-11-25 18:11:14,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1272 transitions. [2022-11-25 18:11:14,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1272 transitions. [2022-11-25 18:11:14,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:14,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1272 transitions. [2022-11-25 18:11:14,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 254.4) internal successors, (1272), 5 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:14,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:14,585 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:14,585 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 69 flow. Second operand 5 states and 1272 transitions. [2022-11-25 18:11:14,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 178 flow [2022-11-25 18:11:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:14,587 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 84 flow [2022-11-25 18:11:14,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2022-11-25 18:11:14,589 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-11-25 18:11:14,589 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 84 flow [2022-11-25 18:11:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:14,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:14,590 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-25 18:11:14,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:14,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:14,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1652483748, now seen corresponding path program 1 times [2022-11-25 18:11:14,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137652557] [2022-11-25 18:11:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:14,809 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 [2022-11-25 18:11:14,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:14,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:14,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 18:11:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:14,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:11:14,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:15,033 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 18:11:15,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 18:11:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:15,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:15,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:15,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137652557] [2022-11-25 18:11:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137652557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:15,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:15,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348202062] [2022-11-25 18:11:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:11:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:11:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:11:15,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 595 [2022-11-25 18:11:15,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:15,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:15,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 595 [2022-11-25 18:11:15,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:15,561 INFO L130 PetriNetUnfolder]: 101/186 cut-off events. [2022-11-25 18:11:15,561 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-25 18:11:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 186 events. 101/186 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 531 event pairs, 75 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 434. Up to 182 conditions per place. [2022-11-25 18:11:15,563 INFO L137 encePairwiseOnDemand]: 591/595 looper letters, 20 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2022-11-25 18:11:15,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 22 transitions, 124 flow [2022-11-25 18:11:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:11:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:11:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1009 transitions. [2022-11-25 18:11:15,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42394957983193277 [2022-11-25 18:11:15,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1009 transitions. [2022-11-25 18:11:15,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1009 transitions. [2022-11-25 18:11:15,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:15,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1009 transitions. [2022-11-25 18:11:15,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:15,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 595.0) internal successors, (2975), 5 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:15,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 595.0) internal successors, (2975), 5 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:15,580 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 84 flow. Second operand 4 states and 1009 transitions. [2022-11-25 18:11:15,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 22 transitions, 124 flow [2022-11-25 18:11:15,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:15,582 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 78 flow [2022-11-25 18:11:15,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2022-11-25 18:11:15,583 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2022-11-25 18:11:15,583 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 78 flow [2022-11-25 18:11:15,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:15,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:15,584 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:15,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:15,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:15,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash -312610311, now seen corresponding path program 1 times [2022-11-25 18:11:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:15,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485233659] [2022-11-25 18:11:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:15,800 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 [2022-11-25 18:11:15,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:15,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:15,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-25 18:11:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:15,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:11:15,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:16,080 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:16,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:16,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:16,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:16,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485233659] [2022-11-25 18:11:16,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485233659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:16,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:16,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-25 18:11:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086976658] [2022-11-25 18:11:16,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:11:16,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:11:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:19,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 595 [2022-11-25 18:11:19,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 247.4) internal successors, (2474), 10 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:19,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:19,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 595 [2022-11-25 18:11:19,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:20,247 INFO L130 PetriNetUnfolder]: 173/318 cut-off events. [2022-11-25 18:11:20,247 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-25 18:11:20,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 318 events. 173/318 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1181 event pairs, 45 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 712. Up to 116 conditions per place. [2022-11-25 18:11:20,250 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 54 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2022-11-25 18:11:20,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 287 flow [2022-11-25 18:11:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:11:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:11:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1782 transitions. [2022-11-25 18:11:20,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4278511404561825 [2022-11-25 18:11:20,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1782 transitions. [2022-11-25 18:11:20,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1782 transitions. [2022-11-25 18:11:20,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:20,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1782 transitions. [2022-11-25 18:11:20,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 254.57142857142858) internal successors, (1782), 7 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:20,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 595.0) internal successors, (4760), 8 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:20,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 595.0) internal successors, (4760), 8 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:20,274 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 78 flow. Second operand 7 states and 1782 transitions. [2022-11-25 18:11:20,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 287 flow [2022-11-25 18:11:20,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:20,276 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 105 flow [2022-11-25 18:11:20,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2022-11-25 18:11:20,277 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-11-25 18:11:20,278 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 105 flow [2022-11-25 18:11:20,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.4) internal successors, (2474), 10 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:20,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:20,279 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:20,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:20,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1099998484, now seen corresponding path program 1 times [2022-11-25 18:11:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354408870] [2022-11-25 18:11:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:20,496 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 [2022-11-25 18:11:20,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:20,498 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:20,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 18:11:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:11:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:20,727 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:20,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:20,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:20,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:20,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354408870] [2022-11-25 18:11:20,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354408870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:20,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700602168] [2022-11-25 18:11:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:20,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:20,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:20,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:20,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:21,192 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 595 [2022-11-25 18:11:21,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 248.6) internal successors, (1243), 5 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:21,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:21,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 595 [2022-11-25 18:11:21,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:21,614 INFO L130 PetriNetUnfolder]: 249/458 cut-off events. [2022-11-25 18:11:21,614 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2022-11-25 18:11:21,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 458 events. 249/458 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1916 event pairs, 135 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1143. Up to 314 conditions per place. [2022-11-25 18:11:21,621 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 34 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2022-11-25 18:11:21,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 241 flow [2022-11-25 18:11:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1266 transitions. [2022-11-25 18:11:21,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42554621848739493 [2022-11-25 18:11:21,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1266 transitions. [2022-11-25 18:11:21,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1266 transitions. [2022-11-25 18:11:21,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:21,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1266 transitions. [2022-11-25 18:11:21,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 253.2) internal successors, (1266), 5 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:21,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:21,637 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:21,638 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 105 flow. Second operand 5 states and 1266 transitions. [2022-11-25 18:11:21,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 241 flow [2022-11-25 18:11:21,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 226 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:21,642 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 112 flow [2022-11-25 18:11:21,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2022-11-25 18:11:21,644 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-11-25 18:11:21,645 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 112 flow [2022-11-25 18:11:21,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.6) internal successors, (1243), 5 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:21,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:21,646 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:21,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:21,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:21,868 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash 259787927, now seen corresponding path program 1 times [2022-11-25 18:11:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:21,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220673327] [2022-11-25 18:11:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:21,870 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 [2022-11-25 18:11:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:21,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:21,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 18:11:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:11:22,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:22,151 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:22,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:22,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:22,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220673327] [2022-11-25 18:11:22,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220673327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:22,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:22,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-25 18:11:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749651576] [2022-11-25 18:11:22,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:11:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:11:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:24,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 595 [2022-11-25 18:11:24,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 247.8) internal successors, (2478), 10 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:24,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:24,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 595 [2022-11-25 18:11:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:25,715 INFO L130 PetriNetUnfolder]: 401/738 cut-off events. [2022-11-25 18:11:25,715 INFO L131 PetriNetUnfolder]: For 485/485 co-relation queries the response was YES. [2022-11-25 18:11:25,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 738 events. 401/738 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3456 event pairs, 135 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 1954. Up to 314 conditions per place. [2022-11-25 18:11:25,721 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 60 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2022-11-25 18:11:25,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 408 flow [2022-11-25 18:11:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:11:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:11:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1776 transitions. [2022-11-25 18:11:25,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4264105642256903 [2022-11-25 18:11:25,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1776 transitions. [2022-11-25 18:11:25,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1776 transitions. [2022-11-25 18:11:25,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:25,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1776 transitions. [2022-11-25 18:11:25,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 253.71428571428572) internal successors, (1776), 7 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 595.0) internal successors, (4760), 8 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 595.0) internal successors, (4760), 8 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,744 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 112 flow. Second operand 7 states and 1776 transitions. [2022-11-25 18:11:25,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 408 flow [2022-11-25 18:11:25,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:25,764 INFO L231 Difference]: Finished difference. Result has 49 places, 27 transitions, 136 flow [2022-11-25 18:11:25,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=27} [2022-11-25 18:11:25,766 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-11-25 18:11:25,766 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 27 transitions, 136 flow [2022-11-25 18:11:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.8) internal successors, (2478), 10 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:25,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:25,768 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-25 18:11:25,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:25,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:25,984 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 229234553, now seen corresponding path program 2 times [2022-11-25 18:11:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:25,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249530768] [2022-11-25 18:11:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:25,985 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 [2022-11-25 18:11:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:25,987 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-25 18:11:26,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:26,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:26,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:11:26,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:26,289 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 18:11:26,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-25 18:11:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:26,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:27,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249530768] [2022-11-25 18:11:27,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249530768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:27,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:27,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-25 18:11:27,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281740383] [2022-11-25 18:11:27,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:27,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:11:27,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:11:27,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:11:30,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 595 [2022-11-25 18:11:30,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 27 transitions, 136 flow. Second operand has 12 states, 12 states have (on average 247.5) internal successors, (2970), 12 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:30,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:30,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 595 [2022-11-25 18:11:30,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:32,021 INFO L130 PetriNetUnfolder]: 347/662 cut-off events. [2022-11-25 18:11:32,021 INFO L131 PetriNetUnfolder]: For 744/744 co-relation queries the response was YES. [2022-11-25 18:11:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 662 events. 347/662 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3244 event pairs, 9 based on Foata normal form. 44/706 useless extension candidates. Maximal degree in co-relation 1885. Up to 156 conditions per place. [2022-11-25 18:11:32,029 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 74 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2022-11-25 18:11:32,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 80 transitions, 522 flow [2022-11-25 18:11:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:11:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:11:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2033 transitions. [2022-11-25 18:11:32,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42710084033613444 [2022-11-25 18:11:32,037 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2033 transitions. [2022-11-25 18:11:32,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2033 transitions. [2022-11-25 18:11:32,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:32,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2033 transitions. [2022-11-25 18:11:32,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.125) internal successors, (2033), 8 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 595.0) internal successors, (5355), 9 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,056 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 595.0) internal successors, (5355), 9 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,056 INFO L175 Difference]: Start difference. First operand has 49 places, 27 transitions, 136 flow. Second operand 8 states and 2033 transitions. [2022-11-25 18:11:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 80 transitions, 522 flow [2022-11-25 18:11:32,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 480 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-25 18:11:32,061 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 116 flow [2022-11-25 18:11:32,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2022-11-25 18:11:32,063 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-11-25 18:11:32,063 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 116 flow [2022-11-25 18:11:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 247.5) internal successors, (2970), 12 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:32,066 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:32,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:32,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:32,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:32,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 548176695, now seen corresponding path program 2 times [2022-11-25 18:11:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:32,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857307250] [2022-11-25 18:11:32,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:32,285 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 [2022-11-25 18:11:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:32,287 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:32,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 18:11:32,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:32,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:32,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:32,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:32,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:32,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:32,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857307250] [2022-11-25 18:11:32,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857307250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:11:32,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:11:32,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-25 18:11:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080932359] [2022-11-25 18:11:32,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:11:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:11:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:11:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:11:32,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 595 [2022-11-25 18:11:32,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 116 flow. Second operand has 10 states, 10 states have (on average 256.6) internal successors, (2566), 10 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:32,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:32,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 595 [2022-11-25 18:11:32,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:33,733 INFO L130 PetriNetUnfolder]: 288/577 cut-off events. [2022-11-25 18:11:33,733 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-11-25 18:11:33,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 577 events. 288/577 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2728 event pairs, 24 based on Foata normal form. 52/629 useless extension candidates. Maximal degree in co-relation 1493. Up to 126 conditions per place. [2022-11-25 18:11:33,736 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 60 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2022-11-25 18:11:33,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 375 flow [2022-11-25 18:11:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2022-11-25 18:11:33,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4436974789915966 [2022-11-25 18:11:33,742 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2022-11-25 18:11:33,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2022-11-25 18:11:33,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:33,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2022-11-25 18:11:33,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:33,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:33,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:33,757 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 116 flow. Second operand 6 states and 1584 transitions. [2022-11-25 18:11:33,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 375 flow [2022-11-25 18:11:33,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 327 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 18:11:33,761 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 90 flow [2022-11-25 18:11:33,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-11-25 18:11:33,762 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-11-25 18:11:33,762 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 90 flow [2022-11-25 18:11:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 256.6) internal successors, (2566), 10 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:33,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:33,764 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:33,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:33,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:33,982 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1273942571, now seen corresponding path program 1 times [2022-11-25 18:11:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:33,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012370564] [2022-11-25 18:11:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:33,984 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 [2022-11-25 18:11:33,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:33,985 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:33,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 18:11:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:34,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:11:34,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:34,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:34,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:34,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012370564] [2022-11-25 18:11:34,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012370564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:34,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:34,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450707345] [2022-11-25 18:11:34,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:34,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:34,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 595 [2022-11-25 18:11:34,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:34,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:34,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 595 [2022-11-25 18:11:34,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:35,478 INFO L130 PetriNetUnfolder]: 290/588 cut-off events. [2022-11-25 18:11:35,478 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-25 18:11:35,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 588 events. 290/588 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2839 event pairs, 218 based on Foata normal form. 5/593 useless extension candidates. Maximal degree in co-relation 1453. Up to 442 conditions per place. [2022-11-25 18:11:35,482 INFO L137 encePairwiseOnDemand]: 589/595 looper letters, 38 selfloop transitions, 3 changer transitions 8/49 dead transitions. [2022-11-25 18:11:35,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 274 flow [2022-11-25 18:11:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1207 transitions. [2022-11-25 18:11:35,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4057142857142857 [2022-11-25 18:11:35,488 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1207 transitions. [2022-11-25 18:11:35,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1207 transitions. [2022-11-25 18:11:35,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:35,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1207 transitions. [2022-11-25 18:11:35,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.4) internal successors, (1207), 5 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:35,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:35,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:35,498 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 90 flow. Second operand 5 states and 1207 transitions. [2022-11-25 18:11:35,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 274 flow [2022-11-25 18:11:35,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 253 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:11:35,500 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 103 flow [2022-11-25 18:11:35,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2022-11-25 18:11:35,501 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-11-25 18:11:35,502 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 103 flow [2022-11-25 18:11:35,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:35,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:35,503 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:35,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:35,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1135964163, now seen corresponding path program 2 times [2022-11-25 18:11:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298656723] [2022-11-25 18:11:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:35,722 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 [2022-11-25 18:11:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:35,723 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:35,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 18:11:35,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:11:35,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:35,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:11:35,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:36,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:36,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298656723] [2022-11-25 18:11:36,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298656723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:36,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:36,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368803756] [2022-11-25 18:11:36,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:36,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:36,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 595 [2022-11-25 18:11:36,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:36,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:36,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 595 [2022-11-25 18:11:36,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:37,339 INFO L130 PetriNetUnfolder]: 284/580 cut-off events. [2022-11-25 18:11:37,340 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2022-11-25 18:11:37,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 580 events. 284/580 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2798 event pairs, 218 based on Foata normal form. 3/583 useless extension candidates. Maximal degree in co-relation 1583. Up to 452 conditions per place. [2022-11-25 18:11:37,342 INFO L137 encePairwiseOnDemand]: 589/595 looper letters, 41 selfloop transitions, 3 changer transitions 6/50 dead transitions. [2022-11-25 18:11:37,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 304 flow [2022-11-25 18:11:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1205 transitions. [2022-11-25 18:11:37,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4050420168067227 [2022-11-25 18:11:37,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1205 transitions. [2022-11-25 18:11:37,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1205 transitions. [2022-11-25 18:11:37,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:37,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1205 transitions. [2022-11-25 18:11:37,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,353 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 103 flow. Second operand 5 states and 1205 transitions. [2022-11-25 18:11:37,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 304 flow [2022-11-25 18:11:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 280 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:37,356 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 113 flow [2022-11-25 18:11:37,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2022-11-25 18:11:37,357 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-11-25 18:11:37,357 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 113 flow [2022-11-25 18:11:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:37,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:37,358 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:37,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:37,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:37,576 INFO L85 PathProgramCache]: Analyzing trace with hash 364307431, now seen corresponding path program 3 times [2022-11-25 18:11:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:37,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445093887] [2022-11-25 18:11:37,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:11:37,576 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 [2022-11-25 18:11:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:37,578 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:37,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-25 18:11:37,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 18:11:37,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:37,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:11:37,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:38,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:38,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445093887] [2022-11-25 18:11:38,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445093887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:38,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:38,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:38,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762899211] [2022-11-25 18:11:38,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:38,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:38,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 595 [2022-11-25 18:11:38,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:38,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:38,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 595 [2022-11-25 18:11:38,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:39,347 INFO L130 PetriNetUnfolder]: 294/596 cut-off events. [2022-11-25 18:11:39,348 INFO L131 PetriNetUnfolder]: For 515/515 co-relation queries the response was YES. [2022-11-25 18:11:39,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 596 events. 294/596 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2869 event pairs, 220 based on Foata normal form. 5/601 useless extension candidates. Maximal degree in co-relation 1799. Up to 446 conditions per place. [2022-11-25 18:11:39,354 INFO L137 encePairwiseOnDemand]: 589/595 looper letters, 37 selfloop transitions, 5 changer transitions 6/48 dead transitions. [2022-11-25 18:11:39,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 303 flow [2022-11-25 18:11:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:39,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1201 transitions. [2022-11-25 18:11:39,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40369747899159664 [2022-11-25 18:11:39,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1201 transitions. [2022-11-25 18:11:39,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1201 transitions. [2022-11-25 18:11:39,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:39,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1201 transitions. [2022-11-25 18:11:39,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.2) internal successors, (1201), 5 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,369 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,369 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 113 flow. Second operand 5 states and 1201 transitions. [2022-11-25 18:11:39,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 303 flow [2022-11-25 18:11:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 279 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:39,373 INFO L231 Difference]: Finished difference. Result has 51 places, 28 transitions, 142 flow [2022-11-25 18:11:39,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2022-11-25 18:11:39,374 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-11-25 18:11:39,374 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 28 transitions, 142 flow [2022-11-25 18:11:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:39,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:39,375 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:39,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:39,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1048522509, now seen corresponding path program 4 times [2022-11-25 18:11:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:39,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864505186] [2022-11-25 18:11:39,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:11:39,592 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 [2022-11-25 18:11:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:39,593 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:39,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 18:11:39,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:11:39,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:11:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:41,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:41,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:41,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864505186] [2022-11-25 18:11:41,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864505186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:41,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:41,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:41,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307405136] [2022-11-25 18:11:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:41,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:11:41,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:11:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:11:42,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 595 [2022-11-25 18:11:42,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 28 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:42,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:42,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 595 [2022-11-25 18:11:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:44,256 INFO L130 PetriNetUnfolder]: 286/578 cut-off events. [2022-11-25 18:11:44,256 INFO L131 PetriNetUnfolder]: For 631/631 co-relation queries the response was YES. [2022-11-25 18:11:44,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 578 events. 286/578 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2744 event pairs, 216 based on Foata normal form. 3/581 useless extension candidates. Maximal degree in co-relation 1804. Up to 454 conditions per place. [2022-11-25 18:11:44,262 INFO L137 encePairwiseOnDemand]: 588/595 looper letters, 36 selfloop transitions, 9 changer transitions 7/52 dead transitions. [2022-11-25 18:11:44,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 348 flow [2022-11-25 18:11:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:11:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:11:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1436 transitions. [2022-11-25 18:11:44,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40224089635854343 [2022-11-25 18:11:44,268 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1436 transitions. [2022-11-25 18:11:44,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1436 transitions. [2022-11-25 18:11:44,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:44,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1436 transitions. [2022-11-25 18:11:44,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:44,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:44,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:44,278 INFO L175 Difference]: Start difference. First operand has 51 places, 28 transitions, 142 flow. Second operand 6 states and 1436 transitions. [2022-11-25 18:11:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 348 flow [2022-11-25 18:11:44,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 331 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:44,283 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 208 flow [2022-11-25 18:11:44,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2022-11-25 18:11:44,284 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2022-11-25 18:11:44,284 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 208 flow [2022-11-25 18:11:44,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:44,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:44,285 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:44,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:44,502 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 799544056, now seen corresponding path program 1 times [2022-11-25 18:11:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:44,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574613406] [2022-11-25 18:11:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:44,503 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 [2022-11-25 18:11:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:44,505 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:44,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-25 18:11:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:44,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:44,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:44,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:44,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574613406] [2022-11-25 18:11:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574613406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:44,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:44,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139613004] [2022-11-25 18:11:44,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:44,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:44,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:45,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 595 [2022-11-25 18:11:45,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:45,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:45,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 595 [2022-11-25 18:11:45,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:45,652 INFO L130 PetriNetUnfolder]: 296/593 cut-off events. [2022-11-25 18:11:45,653 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-11-25 18:11:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 593 events. 296/593 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2829 event pairs, 44 based on Foata normal form. 12/605 useless extension candidates. Maximal degree in co-relation 2004. Up to 380 conditions per place. [2022-11-25 18:11:45,656 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 46 selfloop transitions, 8 changer transitions 1/55 dead transitions. [2022-11-25 18:11:45,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 415 flow [2022-11-25 18:11:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1253 transitions. [2022-11-25 18:11:45,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4211764705882353 [2022-11-25 18:11:45,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1253 transitions. [2022-11-25 18:11:45,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1253 transitions. [2022-11-25 18:11:45,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:45,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1253 transitions. [2022-11-25 18:11:45,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.6) internal successors, (1253), 5 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:45,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:45,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:45,669 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 208 flow. Second operand 5 states and 1253 transitions. [2022-11-25 18:11:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 415 flow [2022-11-25 18:11:45,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 389 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:45,675 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 235 flow [2022-11-25 18:11:45,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2022-11-25 18:11:45,676 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-11-25 18:11:45,676 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 235 flow [2022-11-25 18:11:45,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:45,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:45,677 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:45,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:45,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:45,890 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1157572959, now seen corresponding path program 1 times [2022-11-25 18:11:45,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761445295] [2022-11-25 18:11:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:45,892 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 [2022-11-25 18:11:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:45,894 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:45,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-25 18:11:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:46,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:46,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:46,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:46,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:46,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761445295] [2022-11-25 18:11:46,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761445295] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:46,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:46,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-25 18:11:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802060727] [2022-11-25 18:11:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:46,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:11:46,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 595 [2022-11-25 18:11:46,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:46,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:46,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 595 [2022-11-25 18:11:46,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:47,608 INFO L130 PetriNetUnfolder]: 318/633 cut-off events. [2022-11-25 18:11:47,609 INFO L131 PetriNetUnfolder]: For 1304/1304 co-relation queries the response was YES. [2022-11-25 18:11:47,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 633 events. 318/633 cut-off events. For 1304/1304 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3173 event pairs, 28 based on Foata normal form. 18/651 useless extension candidates. Maximal degree in co-relation 2205. Up to 422 conditions per place. [2022-11-25 18:11:47,615 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 52 selfloop transitions, 9 changer transitions 1/62 dead transitions. [2022-11-25 18:11:47,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 476 flow [2022-11-25 18:11:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1252 transitions. [2022-11-25 18:11:47,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42084033613445376 [2022-11-25 18:11:47,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1252 transitions. [2022-11-25 18:11:47,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1252 transitions. [2022-11-25 18:11:47,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:47,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1252 transitions. [2022-11-25 18:11:47,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.4) internal successors, (1252), 5 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,629 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 235 flow. Second operand 5 states and 1252 transitions. [2022-11-25 18:11:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 476 flow [2022-11-25 18:11:47,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 460 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:47,635 INFO L231 Difference]: Finished difference. Result has 64 places, 37 transitions, 272 flow [2022-11-25 18:11:47,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=64, PETRI_TRANSITIONS=37} [2022-11-25 18:11:47,636 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-11-25 18:11:47,637 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 37 transitions, 272 flow [2022-11-25 18:11:47,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:47,638 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:47,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:47,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:47,862 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:47,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1737210488, now seen corresponding path program 2 times [2022-11-25 18:11:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:47,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744732157] [2022-11-25 18:11:47,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:47,863 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 [2022-11-25 18:11:47,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:47,865 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:47,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 18:11:48,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:48,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:48,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:48,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:48,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744732157] [2022-11-25 18:11:48,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744732157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:48,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:48,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380270647] [2022-11-25 18:11:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:48,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:48,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 595 [2022-11-25 18:11:48,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 37 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:48,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:48,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 595 [2022-11-25 18:11:48,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:49,060 INFO L130 PetriNetUnfolder]: 334/661 cut-off events. [2022-11-25 18:11:49,060 INFO L131 PetriNetUnfolder]: For 2054/2054 co-relation queries the response was YES. [2022-11-25 18:11:49,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 661 events. 334/661 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3136 event pairs, 228 based on Foata normal form. 12/673 useless extension candidates. Maximal degree in co-relation 2453. Up to 508 conditions per place. [2022-11-25 18:11:49,064 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 44 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2022-11-25 18:11:49,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 449 flow [2022-11-25 18:11:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1238 transitions. [2022-11-25 18:11:49,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4161344537815126 [2022-11-25 18:11:49,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1238 transitions. [2022-11-25 18:11:49,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1238 transitions. [2022-11-25 18:11:49,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:49,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1238 transitions. [2022-11-25 18:11:49,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.6) internal successors, (1238), 5 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,072 INFO L175 Difference]: Start difference. First operand has 64 places, 37 transitions, 272 flow. Second operand 5 states and 1238 transitions. [2022-11-25 18:11:49,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 449 flow [2022-11-25 18:11:49,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 434 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:11:49,078 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 293 flow [2022-11-25 18:11:49,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2022-11-25 18:11:49,079 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2022-11-25 18:11:49,079 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 293 flow [2022-11-25 18:11:49,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:49,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:49,080 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:49,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:49,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:49,293 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1208530833, now seen corresponding path program 2 times [2022-11-25 18:11:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880112213] [2022-11-25 18:11:49,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:11:49,294 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 [2022-11-25 18:11:49,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:49,296 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:49,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-25 18:11:49,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:11:49,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:49,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:49,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:49,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:11:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:50,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880112213] [2022-11-25 18:11:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880112213] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:11:50,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:11:50,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 18:11:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285241471] [2022-11-25 18:11:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:50,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:11:50,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 595 [2022-11-25 18:11:50,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:50,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:50,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 595 [2022-11-25 18:11:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:51,595 INFO L130 PetriNetUnfolder]: 374/755 cut-off events. [2022-11-25 18:11:51,595 INFO L131 PetriNetUnfolder]: For 2298/2298 co-relation queries the response was YES. [2022-11-25 18:11:51,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 755 events. 374/755 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3862 event pairs, 140 based on Foata normal form. 18/773 useless extension candidates. Maximal degree in co-relation 2859. Up to 608 conditions per place. [2022-11-25 18:11:51,602 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 50 selfloop transitions, 12 changer transitions 1/63 dead transitions. [2022-11-25 18:11:51,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 538 flow [2022-11-25 18:11:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1249 transitions. [2022-11-25 18:11:51,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41983193277310926 [2022-11-25 18:11:51,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1249 transitions. [2022-11-25 18:11:51,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1249 transitions. [2022-11-25 18:11:51,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:51,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1249 transitions. [2022-11-25 18:11:51,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.8) internal successors, (1249), 5 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:51,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:51,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:51,616 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 293 flow. Second operand 5 states and 1249 transitions. [2022-11-25 18:11:51,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 538 flow [2022-11-25 18:11:51,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 514 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:51,624 INFO L231 Difference]: Finished difference. Result has 70 places, 42 transitions, 343 flow [2022-11-25 18:11:51,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=70, PETRI_TRANSITIONS=42} [2022-11-25 18:11:51,625 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 18:11:51,625 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 42 transitions, 343 flow [2022-11-25 18:11:51,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:51,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:51,626 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:51,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:51,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:51,838 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:51,839 INFO L85 PathProgramCache]: Analyzing trace with hash -882833225, now seen corresponding path program 3 times [2022-11-25 18:11:51,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:51,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91053523] [2022-11-25 18:11:51,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:11:51,839 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 [2022-11-25 18:11:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:51,841 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:51,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-25 18:11:52,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:11:52,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:52,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:52,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:52,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:52,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91053523] [2022-11-25 18:11:52,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91053523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:52,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:52,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780349233] [2022-11-25 18:11:52,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:52,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:52,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 595 [2022-11-25 18:11:52,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 42 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:52,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:52,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 595 [2022-11-25 18:11:52,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:53,181 INFO L130 PetriNetUnfolder]: 368/725 cut-off events. [2022-11-25 18:11:53,181 INFO L131 PetriNetUnfolder]: For 2548/2548 co-relation queries the response was YES. [2022-11-25 18:11:53,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2959 conditions, 725 events. 368/725 cut-off events. For 2548/2548 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3556 event pairs, 234 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 2929. Up to 572 conditions per place. [2022-11-25 18:11:53,189 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 43 selfloop transitions, 10 changer transitions 2/55 dead transitions. [2022-11-25 18:11:53,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 55 transitions, 500 flow [2022-11-25 18:11:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1235 transitions. [2022-11-25 18:11:53,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4151260504201681 [2022-11-25 18:11:53,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1235 transitions. [2022-11-25 18:11:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1235 transitions. [2022-11-25 18:11:53,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:53,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1235 transitions. [2022-11-25 18:11:53,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:53,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:53,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:53,202 INFO L175 Difference]: Start difference. First operand has 70 places, 42 transitions, 343 flow. Second operand 5 states and 1235 transitions. [2022-11-25 18:11:53,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 55 transitions, 500 flow [2022-11-25 18:11:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 55 transitions, 495 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:11:53,211 INFO L231 Difference]: Finished difference. Result has 74 places, 42 transitions, 363 flow [2022-11-25 18:11:53,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=74, PETRI_TRANSITIONS=42} [2022-11-25 18:11:53,213 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2022-11-25 18:11:53,213 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 42 transitions, 363 flow [2022-11-25 18:11:53,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:53,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:53,214 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:53,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:53,431 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:53,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1148411218, now seen corresponding path program 3 times [2022-11-25 18:11:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:53,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102907504] [2022-11-25 18:11:53,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:11:53,432 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 [2022-11-25 18:11:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:53,434 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:53,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-25 18:11:53,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:11:53,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:53,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:53,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:53,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:53,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:53,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102907504] [2022-11-25 18:11:53,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102907504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:53,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:53,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:53,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658469380] [2022-11-25 18:11:53,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:54,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 595 [2022-11-25 18:11:54,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 42 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:54,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 595 [2022-11-25 18:11:54,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:54,720 INFO L130 PetriNetUnfolder]: 355/710 cut-off events. [2022-11-25 18:11:54,720 INFO L131 PetriNetUnfolder]: For 2707/2707 co-relation queries the response was YES. [2022-11-25 18:11:54,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 710 events. 355/710 cut-off events. For 2707/2707 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3551 event pairs, 200 based on Foata normal form. 12/722 useless extension candidates. Maximal degree in co-relation 2887. Up to 480 conditions per place. [2022-11-25 18:11:54,728 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 48 selfloop transitions, 13 changer transitions 1/62 dead transitions. [2022-11-25 18:11:54,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 62 transitions, 559 flow [2022-11-25 18:11:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1242 transitions. [2022-11-25 18:11:54,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41747899159663865 [2022-11-25 18:11:54,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1242 transitions. [2022-11-25 18:11:54,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1242 transitions. [2022-11-25 18:11:54,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:54,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1242 transitions. [2022-11-25 18:11:54,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.4) internal successors, (1242), 5 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,755 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,755 INFO L175 Difference]: Start difference. First operand has 74 places, 42 transitions, 363 flow. Second operand 5 states and 1242 transitions. [2022-11-25 18:11:54,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 62 transitions, 559 flow [2022-11-25 18:11:54,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:11:54,765 INFO L231 Difference]: Finished difference. Result has 75 places, 42 transitions, 371 flow [2022-11-25 18:11:54,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=75, PETRI_TRANSITIONS=42} [2022-11-25 18:11:54,767 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2022-11-25 18:11:54,767 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 42 transitions, 371 flow [2022-11-25 18:11:54,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:54,768 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:54,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:54,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:54,974 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash 829930489, now seen corresponding path program 4 times [2022-11-25 18:11:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101122405] [2022-11-25 18:11:54,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:11:54,975 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 [2022-11-25 18:11:54,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:54,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:54,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-25 18:11:55,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:11:55,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:55,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:55,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:55,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:55,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:55,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101122405] [2022-11-25 18:11:55,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101122405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:55,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:55,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602681165] [2022-11-25 18:11:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:55,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:55,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:55,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 595 [2022-11-25 18:11:55,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 42 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:55,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:55,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 595 [2022-11-25 18:11:55,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:56,264 INFO L130 PetriNetUnfolder]: 330/655 cut-off events. [2022-11-25 18:11:56,265 INFO L131 PetriNetUnfolder]: For 2640/2640 co-relation queries the response was YES. [2022-11-25 18:11:56,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 655 events. 330/655 cut-off events. For 2640/2640 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3131 event pairs, 203 based on Foata normal form. 18/673 useless extension candidates. Maximal degree in co-relation 2676. Up to 537 conditions per place. [2022-11-25 18:11:56,273 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 44 selfloop transitions, 13 changer transitions 1/58 dead transitions. [2022-11-25 18:11:56,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 58 transitions, 555 flow [2022-11-25 18:11:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1238 transitions. [2022-11-25 18:11:56,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4161344537815126 [2022-11-25 18:11:56,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1238 transitions. [2022-11-25 18:11:56,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1238 transitions. [2022-11-25 18:11:56,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:56,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1238 transitions. [2022-11-25 18:11:56,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.6) internal successors, (1238), 5 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:56,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:56,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:56,304 INFO L175 Difference]: Start difference. First operand has 75 places, 42 transitions, 371 flow. Second operand 5 states and 1238 transitions. [2022-11-25 18:11:56,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 58 transitions, 555 flow [2022-11-25 18:11:56,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 521 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-25 18:11:56,314 INFO L231 Difference]: Finished difference. Result has 74 places, 42 transitions, 362 flow [2022-11-25 18:11:56,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=74, PETRI_TRANSITIONS=42} [2022-11-25 18:11:56,315 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2022-11-25 18:11:56,315 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 42 transitions, 362 flow [2022-11-25 18:11:56,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:56,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:56,316 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:56,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:56,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:56,524 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1974236112, now seen corresponding path program 4 times [2022-11-25 18:11:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:56,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333891398] [2022-11-25 18:11:56,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:11:56,526 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 [2022-11-25 18:11:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:56,527 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:56,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-25 18:11:56,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:11:56,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:11:56,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:11:56,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:11:56,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:11:56,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:11:56,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333891398] [2022-11-25 18:11:56,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333891398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:56,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:56,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:11:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110032342] [2022-11-25 18:11:56,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:56,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:11:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:11:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:11:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:11:57,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 595 [2022-11-25 18:11:57,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 42 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:57,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:11:57,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 595 [2022-11-25 18:11:57,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:11:57,865 INFO L130 PetriNetUnfolder]: 311/604 cut-off events. [2022-11-25 18:11:57,865 INFO L131 PetriNetUnfolder]: For 1987/1987 co-relation queries the response was YES. [2022-11-25 18:11:57,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 604 events. 311/604 cut-off events. For 1987/1987 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2735 event pairs, 187 based on Foata normal form. 4/608 useless extension candidates. Maximal degree in co-relation 2476. Up to 489 conditions per place. [2022-11-25 18:11:57,870 INFO L137 encePairwiseOnDemand]: 590/595 looper letters, 35 selfloop transitions, 12 changer transitions 4/51 dead transitions. [2022-11-25 18:11:57,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 51 transitions, 485 flow [2022-11-25 18:11:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:11:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:11:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1232 transitions. [2022-11-25 18:11:57,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41411764705882353 [2022-11-25 18:11:57,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1232 transitions. [2022-11-25 18:11:57,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1232 transitions. [2022-11-25 18:11:57,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:11:57,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1232 transitions. [2022-11-25 18:11:57,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.4) internal successors, (1232), 5 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:57,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:57,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 595.0) internal successors, (3570), 6 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:57,878 INFO L175 Difference]: Start difference. First operand has 74 places, 42 transitions, 362 flow. Second operand 5 states and 1232 transitions. [2022-11-25 18:11:57,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 51 transitions, 485 flow [2022-11-25 18:11:57,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 51 transitions, 439 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-25 18:11:57,887 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 321 flow [2022-11-25 18:11:57,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2022-11-25 18:11:57,889 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 18:11:57,889 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 321 flow [2022-11-25 18:11:57,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:57,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:11:57,890 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:57,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-25 18:11:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:11:58,108 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:11:58,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:58,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1492459214, now seen corresponding path program 1 times [2022-11-25 18:11:58,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:11:58,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65209029] [2022-11-25 18:11:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:58,109 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 [2022-11-25 18:11:58,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:11:58,111 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:11:58,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-25 18:11:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:58,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:11:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:11:59,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:11:59,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 144 [2022-11-25 18:12:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:12:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:12:13,302 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-25 18:12:13,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 928 treesize of output 394 [2022-11-25 18:17:43,749 WARN L233 SmtUtils]: Spent 5.32m on a formula simplification. DAG size of input: 410 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:17:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:17:44,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:17:44,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65209029] [2022-11-25 18:17:44,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65209029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:17:44,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:17:44,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-25 18:17:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226328839] [2022-11-25 18:17:44,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:17:44,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:17:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:17:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:17:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-25 18:17:46,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:17:48,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:17:51,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:17:53,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:17:56,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:17:58,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:00,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:03,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:05,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:07,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:10,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:12,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:14,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:17,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:19,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:21,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:24,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:26,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:28,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:31,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:33,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:35,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:35,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 595 [2022-11-25 18:18:35,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 321 flow. Second operand has 14 states, 14 states have (on average 195.07142857142858) internal successors, (2731), 14 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:35,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:18:35,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 595 [2022-11-25 18:18:35,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:18:48,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:18:54,396 INFO L130 PetriNetUnfolder]: 375/733 cut-off events. [2022-11-25 18:18:54,396 INFO L131 PetriNetUnfolder]: For 1923/1923 co-relation queries the response was YES. [2022-11-25 18:18:54,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 733 events. 375/733 cut-off events. For 1923/1923 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3704 event pairs, 50 based on Foata normal form. 5/738 useless extension candidates. Maximal degree in co-relation 2843. Up to 287 conditions per place. [2022-11-25 18:18:54,401 INFO L137 encePairwiseOnDemand]: 588/595 looper letters, 67 selfloop transitions, 15 changer transitions 11/93 dead transitions. [2022-11-25 18:18:54,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 93 transitions, 812 flow [2022-11-25 18:18:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:18:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:18:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1603 transitions. [2022-11-25 18:18:54,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.33676470588235297 [2022-11-25 18:18:54,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1603 transitions. [2022-11-25 18:18:54,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1603 transitions. [2022-11-25 18:18:54,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:18:54,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1603 transitions. [2022-11-25 18:18:54,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.375) internal successors, (1603), 8 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:54,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 595.0) internal successors, (5355), 9 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:54,414 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 595.0) internal successors, (5355), 9 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:54,415 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 321 flow. Second operand 8 states and 1603 transitions. [2022-11-25 18:18:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 93 transitions, 812 flow [2022-11-25 18:18:54,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 751 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:18:54,422 INFO L231 Difference]: Finished difference. Result has 74 places, 45 transitions, 368 flow [2022-11-25 18:18:54,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=74, PETRI_TRANSITIONS=45} [2022-11-25 18:18:54,423 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2022-11-25 18:18:54,423 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 45 transitions, 368 flow [2022-11-25 18:18:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.07142857142858) internal successors, (2731), 14 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:18:54,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:18:54,424 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:54,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-25 18:18:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:18:54,639 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 18:18:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash -725221742, now seen corresponding path program 2 times [2022-11-25 18:18:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:18:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225203682] [2022-11-25 18:18:54,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:18:54,640 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 [2022-11-25 18:18:54,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:18:54,642 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:18:54,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7561e7ff-4531-4e17-8bae-c1971dd21c7a/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-25 18:18:54,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:18:54,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:18:54,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:55,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 18:18:55,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 635 treesize of output 239 [2022-11-25 18:19:03,994 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 42 DAG size of output: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:19:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:19:08,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:19:17,285 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-25 18:19:17,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 881 treesize of output 391 [2022-11-25 18:24:21,210 WARN L233 SmtUtils]: Spent 4.89m on a formula simplification. DAG size of input: 415 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:24:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:24:21,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:21,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225203682] [2022-11-25 18:24:21,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225203682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:21,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:21,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-25 18:24:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360835039] [2022-11-25 18:24:21,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:21,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:24:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:21,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:24:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:24:32,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 595 [2022-11-25 18:24:32,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 45 transitions, 368 flow. Second operand has 14 states, 14 states have (on average 215.92857142857142) internal successors, (3023), 14 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:32,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:32,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 595 [2022-11-25 18:24:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand