./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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_12adce7f-7c1b-4d51-955a-038ac7d36923/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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --- 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 18:12:16,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:12:16,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:12:16,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:12:16,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:12:16,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:12:16,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:12:16,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:12:16,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:12:16,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:12:16,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:12:16,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:12:16,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:12:16,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:12:16,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:12:16,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:12:16,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:12:16,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:12:16,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:12:16,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:12:16,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:12:16,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:12:16,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:12:16,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:12:16,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:12:16,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:12:16,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:12:16,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:12:16,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:12:16,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:12:16,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:12:16,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:12:16,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:12:16,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:12:16,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:12:16,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:12:16,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:12:16,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:12:16,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:12:16,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:12:16,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:12:16,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:12:16,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:12:16,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:12:16,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:12:16,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:12:16,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:12:16,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:12:16,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:12:16,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:12:16,907 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:12:16,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:12:16,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:12:16,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:12:16,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:12:16,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:12:16,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:12:16,910 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:12:16,910 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:12:16,911 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:12:16,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:12:16,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:12:16,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:12:16,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:12:16,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:12:16,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:12:16,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:12:16,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:16,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:12:16,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:12:16,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:12:16,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:12:16,914 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:12:16,914 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:12:16,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:12:16,915 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_12adce7f-7c1b-4d51-955a-038ac7d36923/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 [2022-11-25 18:12:17,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:12:17,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:12:17,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:12:17,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:12:17,355 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:12:17,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-25 18:12:20,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:12:20,955 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:12:20,956 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-25 18:12:20,964 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/aef03546b/3aefee1979dc4cfb8a2df19014ac9503/FLAGe2ec1c8a7 [2022-11-25 18:12:20,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/aef03546b/3aefee1979dc4cfb8a2df19014ac9503 [2022-11-25 18:12:20,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:12:20,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:12:20,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:20,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:12:20,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:12:20,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:20" (1/1) ... [2022-11-25 18:12:20,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc0eff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:20, skipping insertion in model container [2022-11-25 18:12:20,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:20" (1/1) ... [2022-11-25 18:12:21,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:12:21,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:21,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:21,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:21,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:21,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:21,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:21,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:21,274 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_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-25 18:12:21,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:21,300 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 18:12:21,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@144d6be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:21, skipping insertion in model container [2022-11-25 18:12:21,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:21,301 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:12:21,303 INFO L158 Benchmark]: Toolchain (without parser) took 316.31ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 145.5MB in the end (delta: -715.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:12:21,304 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:12:21,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.25ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 145.5MB in the end (delta: -715.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:12:21,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.25ms. Allocated memory is still 180.4MB. Free memory was 144.8MB in the beginning and 145.5MB in the end (delta: -715.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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_12adce7f-7c1b-4d51-955a-038ac7d36923/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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --- 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 18:12:24,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:12:24,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:12:24,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:12:24,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:12:24,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:12:24,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:12:24,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:12:24,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:12:24,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:12:24,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:12:24,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:12:24,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:12:24,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:12:24,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:12:24,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:12:24,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:12:24,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:12:24,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:12:24,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:12:24,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:12:24,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:12:24,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:12:24,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:12:24,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:12:24,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:12:24,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:12:24,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:12:24,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:12:24,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:12:24,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:12:24,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:12:24,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:12:24,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:12:24,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:12:24,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:12:24,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:12:24,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:12:24,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:12:24,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:12:24,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:12:24,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:12:24,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:12:24,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:12:24,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:12:24,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:12:24,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:12:24,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:12:24,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:12:24,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:12:24,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:12:24,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:12:24,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:12:24,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:12:24,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:12:24,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:12:24,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:12:24,300 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:12:24,300 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:12:24,300 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:12:24,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:12:24,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:12:24,301 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:12:24,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:12:24,302 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:12:24,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:12:24,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:12:24,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:12:24,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:12:24,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:24,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:12:24,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:12:24,304 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:12:24,304 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:12:24,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:12:24,305 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:12:24,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:12:24,305 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:12:24,306 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_12adce7f-7c1b-4d51-955a-038ac7d36923/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 [2022-11-25 18:12:24,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:12:24,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:12:24,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:12:24,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:12:24,802 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:12:24,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-25 18:12:28,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:12:28,847 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:12:28,848 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2022-11-25 18:12:28,857 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/b1e01910f/5bfb1be49a7c4a7381e54b395153dff7/FLAG699d8af2f [2022-11-25 18:12:28,881 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/data/b1e01910f/5bfb1be49a7c4a7381e54b395153dff7 [2022-11-25 18:12:28,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:12:28,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:12:28,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:28,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:12:28,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:12:28,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:28" (1/1) ... [2022-11-25 18:12:28,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5952fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:28, skipping insertion in model container [2022-11-25 18:12:28,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:28" (1/1) ... [2022-11-25 18:12:28,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:12:28,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:29,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,234 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,262 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_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-25 18:12:29,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:29,300 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:12:29,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:12:29,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,357 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_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-25 18:12:29,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:29,374 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:12:29,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:12:29,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:12:29,429 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_12adce7f-7c1b-4d51-955a-038ac7d36923/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2022-11-25 18:12:29,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:12:29,466 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:12:29,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29 WrapperNode [2022-11-25 18:12:29,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:12:29,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:12:29,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:12:29,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:12:29,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,571 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 261 [2022-11-25 18:12:29,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:12:29,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:12:29,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:12:29,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:12:29,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,637 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:12:29,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:12:29,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:12:29,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:12:29,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (1/1) ... [2022-11-25 18:12:29,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:12:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:29,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:12:29,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:12:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:12:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:12:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:12:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:12:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:12:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:12:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:12:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:12:29,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:12:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:12:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:12:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:12:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:12:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:12:29,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:12:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:12:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:12:29,766 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 18:12:29,910 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:12:29,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:12:31,023 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:12:31,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:12:31,431 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 18:12:31,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:31 BoogieIcfgContainer [2022-11-25 18:12:31,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:12:31,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:12:31,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:12:31,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:12:31,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:12:28" (1/3) ... [2022-11-25 18:12:31,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d18a5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:31, skipping insertion in model container [2022-11-25 18:12:31,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:29" (2/3) ... [2022-11-25 18:12:31,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d18a5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:31, skipping insertion in model container [2022-11-25 18:12:31,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:31" (3/3) ... [2022-11-25 18:12:31,447 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2022-11-25 18:12:31,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:12:31,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-25 18:12:31,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:12:31,616 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:12:31,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 221 transitions, 466 flow [2022-11-25 18:12:31,830 INFO L130 PetriNetUnfolder]: 16/218 cut-off events. [2022-11-25 18:12:31,830 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:12:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 218 events. 16/218 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 229 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2022-11-25 18:12:31,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 221 transitions, 466 flow [2022-11-25 18:12:31,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 213 transitions, 444 flow [2022-11-25 18:12:31,858 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:12:31,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 213 transitions, 444 flow [2022-11-25 18:12:31,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 213 transitions, 444 flow [2022-11-25 18:12:31,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 213 transitions, 444 flow [2022-11-25 18:12:31,974 INFO L130 PetriNetUnfolder]: 16/213 cut-off events. [2022-11-25 18:12:31,974 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:12:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 213 events. 16/213 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2022-11-25 18:12:31,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2022-11-25 18:13:24,605 INFO L134 LiptonReduction]: Checked pairs total: 3523 [2022-11-25 18:13:24,605 INFO L136 LiptonReduction]: Total number of compositions: 219 [2022-11-25 18:13:24,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:13:24,629 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;@2eee8936, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:13:24,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2022-11-25 18:13:24,632 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:13:24,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:13:24,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:13:24,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:13:24,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:13:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash 38363, now seen corresponding path program 1 times [2022-11-25 18:13:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560038120] [2022-11-25 18:13:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:24,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:13:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:24,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:24,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:24,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:13:24,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:25,237 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:13:25,239 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:13:25,302 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 18:13:25,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:25,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:25,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560038120] [2022-11-25 18:13:25,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560038120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:25,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:25,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:13:25,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683550699] [2022-11-25 18:13:25,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:25,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:25,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 440 [2022-11-25 18:13:25,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 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 18:13:25,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:13:25,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 440 [2022-11-25 18:13:25,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:13:30,543 INFO L130 PetriNetUnfolder]: 15149/18809 cut-off events. [2022-11-25 18:13:30,544 INFO L131 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2022-11-25 18:13:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37858 conditions, 18809 events. 15149/18809 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 90555 event pairs, 7317 based on Foata normal form. 0/3798 useless extension candidates. Maximal degree in co-relation 17068. Up to 9408 conditions per place. [2022-11-25 18:13:30,785 INFO L137 encePairwiseOnDemand]: 433/440 looper letters, 95 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-25 18:13:30,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 438 flow [2022-11-25 18:13:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:13:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2022-11-25 18:13:30,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2022-11-25 18:13:30,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2022-11-25 18:13:30,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2022-11-25 18:13:30,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:13:30,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2022-11-25 18:13:30,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 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 18:13:30,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:13:30,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:13:30,848 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 128 flow. Second operand 3 states and 652 transitions. [2022-11-25 18:13:30,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 438 flow [2022-11-25 18:13:30,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 102 transitions, 414 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:13:30,870 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 146 flow [2022-11-25 18:13:30,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2022-11-25 18:13:30,876 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2022-11-25 18:13:30,876 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 146 flow [2022-11-25 18:13:30,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 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 18:13:30,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:13:30,877 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:13:30,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:31,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:13:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 38364, now seen corresponding path program 1 times [2022-11-25 18:13:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135741770] [2022-11-25 18:13:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:31,095 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 18:13:31,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:31,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:31,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:13:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:31,333 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 18:13:31,334 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-25 18:13:31,353 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 18:13:31,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:31,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:31,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135741770] [2022-11-25 18:13:31,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135741770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:31,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:31,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:13:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940441604] [2022-11-25 18:13:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:31,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 440 [2022-11-25 18:13:31,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 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 18:13:31,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:13:31,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 440 [2022-11-25 18:13:31,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:13:34,965 INFO L130 PetriNetUnfolder]: 15259/18915 cut-off events. [2022-11-25 18:13:34,965 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-25 18:13:34,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37861 conditions, 18915 events. 15259/18915 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 1890. Compared 91356 event pairs, 7344 based on Foata normal form. 2/3799 useless extension candidates. Maximal degree in co-relation 18919. Up to 18815 conditions per place. [2022-11-25 18:13:35,085 INFO L137 encePairwiseOnDemand]: 437/440 looper letters, 51 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-11-25 18:13:35,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 246 flow [2022-11-25 18:13:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:13:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2022-11-25 18:13:35,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2022-11-25 18:13:35,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2022-11-25 18:13:35,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2022-11-25 18:13:35,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:13:35,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2022-11-25 18:13:35,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 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 18:13:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:13:35,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:13:35,098 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 146 flow. Second operand 3 states and 600 transitions. [2022-11-25 18:13:35,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 246 flow [2022-11-25 18:13:35,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:13:35,100 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 136 flow [2022-11-25 18:13:35,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2022-11-25 18:13:35,101 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2022-11-25 18:13:35,102 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 136 flow [2022-11-25 18:13:35,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 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 18:13:35,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:13:35,103 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:13:35,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:35,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:35,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:13:35,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1195446, now seen corresponding path program 1 times [2022-11-25 18:13:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:35,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878512081] [2022-11-25 18:13:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:35,327 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 18:13:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:35,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:35,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:35,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:13:35,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:35,510 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 18:13:35,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:35,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:35,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878512081] [2022-11-25 18:13:35,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878512081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:35,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:35,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:13:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102525084] [2022-11-25 18:13:35,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:13:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:13:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:13:35,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 440 [2022-11-25 18:13:35,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 18:13:35,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:13:35,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 440 [2022-11-25 18:13:35,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:13:37,722 INFO L130 PetriNetUnfolder]: 7630/9462 cut-off events. [2022-11-25 18:13:37,722 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 18:13:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18945 conditions, 9462 events. 7630/9462 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 42071 event pairs, 3672 based on Foata normal form. 3/1903 useless extension candidates. Maximal degree in co-relation 18937. Up to 9410 conditions per place. [2022-11-25 18:13:37,893 INFO L137 encePairwiseOnDemand]: 433/440 looper letters, 47 selfloop transitions, 4 changer transitions 1/55 dead transitions. [2022-11-25 18:13:37,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 240 flow [2022-11-25 18:13:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:13:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:13:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 795 transitions. [2022-11-25 18:13:37,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2022-11-25 18:13:37,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 795 transitions. [2022-11-25 18:13:37,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 795 transitions. [2022-11-25 18:13:37,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:13:37,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 795 transitions. [2022-11-25 18:13:37,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 198.75) internal successors, (795), 4 states have internal predecessors, (795), 0 states have call successors, (0), 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 18:13:37,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 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 18:13:37,913 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 0 states have call successors, (0), 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 18:13:37,913 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 136 flow. Second operand 4 states and 795 transitions. [2022-11-25 18:13:37,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 240 flow [2022-11-25 18:13:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:13:37,918 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 155 flow [2022-11-25 18:13:37,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-11-25 18:13:37,920 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2022-11-25 18:13:37,920 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 155 flow [2022-11-25 18:13:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 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 18:13:37,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:13:37,921 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:13:37,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:38,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:38,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:13:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1193981, now seen corresponding path program 1 times [2022-11-25 18:13:38,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:38,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077001603] [2022-11-25 18:13:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:38,137 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 18:13:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:38,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:38,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:38,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:13:38,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:38,427 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:13:38,427 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:13:38,527 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 18:13:38,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:38,817 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 18:13:38,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:38,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077001603] [2022-11-25 18:13:38,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077001603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:13:38,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:13:38,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:13:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905719120] [2022-11-25 18:13:38,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:13:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:13:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:13:38,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:13:40,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 440 [2022-11-25 18:13:40,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 18:13:40,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:13:40,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 440 [2022-11-25 18:13:40,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:13:42,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:13:45,243 INFO L130 PetriNetUnfolder]: 15157/18819 cut-off events. [2022-11-25 18:13:45,243 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 18:13:45,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37702 conditions, 18819 events. 15157/18819 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 1884. Compared 91217 event pairs, 7317 based on Foata normal form. 0/3812 useless extension candidates. Maximal degree in co-relation 37691. Up to 9405 conditions per place. [2022-11-25 18:13:45,370 INFO L137 encePairwiseOnDemand]: 431/440 looper letters, 90 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2022-11-25 18:13:45,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 112 transitions, 558 flow [2022-11-25 18:13:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:13:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:13:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1153 transitions. [2022-11-25 18:13:45,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43674242424242427 [2022-11-25 18:13:45,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1153 transitions. [2022-11-25 18:13:45,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1153 transitions. [2022-11-25 18:13:45,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:13:45,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1153 transitions. [2022-11-25 18:13:45,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 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 18:13:45,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 0 states have call successors, (0), 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 18:13:45,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 0 states have call successors, (0), 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 18:13:45,394 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 155 flow. Second operand 6 states and 1153 transitions. [2022-11-25 18:13:45,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 112 transitions, 558 flow [2022-11-25 18:13:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 112 transitions, 520 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-25 18:13:45,401 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 301 flow [2022-11-25 18:13:45,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2022-11-25 18:13:45,403 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2022-11-25 18:13:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 301 flow [2022-11-25 18:13:45,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 18:13:45,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:13:45,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:13:45,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:45,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:13:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1147607221, now seen corresponding path program 1 times [2022-11-25 18:13:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:13:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112183181] [2022-11-25 18:13:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:45,685 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 18:13:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:13:45,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:45,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:13:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 18:13:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:45,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:45,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:45,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:46,046 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-25 18:13:46,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 31 [2022-11-25 18:13:46,085 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:13:46,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-25 18:13:46,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:13:46,429 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-11-25 18:13:46,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2022-11-25 18:13:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:13:46,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:13:47,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:13:47,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112183181] [2022-11-25 18:13:47,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112183181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:13:47,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:13:47,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:13:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802044807] [2022-11-25 18:13:47,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:13:47,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:13:47,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:13:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:13:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:13:50,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 440 [2022-11-25 18:13:50,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 170.25) internal successors, (1362), 8 states have internal predecessors, (1362), 0 states have call successors, (0), 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 18:13:50,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:13:50,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 440 [2022-11-25 18:13:50,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:01,896 INFO L130 PetriNetUnfolder]: 34939/43852 cut-off events. [2022-11-25 18:14:01,896 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-25 18:14:01,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87891 conditions, 43852 events. 34939/43852 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 2916. Compared 236039 event pairs, 16892 based on Foata normal form. 0/9666 useless extension candidates. Maximal degree in co-relation 87877. Up to 14460 conditions per place. [2022-11-25 18:14:02,137 INFO L137 encePairwiseOnDemand]: 430/440 looper letters, 210 selfloop transitions, 39 changer transitions 0/252 dead transitions. [2022-11-25 18:14:02,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 252 transitions, 1357 flow [2022-11-25 18:14:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:14:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 18:14:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2948 transitions. [2022-11-25 18:14:02,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41875 [2022-11-25 18:14:02,147 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2948 transitions. [2022-11-25 18:14:02,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2948 transitions. [2022-11-25 18:14:02,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:02,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2948 transitions. [2022-11-25 18:14:02,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 184.25) internal successors, (2948), 16 states have internal predecessors, (2948), 0 states have call successors, (0), 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 18:14:02,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 440.0) internal successors, (7480), 17 states have internal predecessors, (7480), 0 states have call successors, (0), 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 18:14:02,174 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 440.0) internal successors, (7480), 17 states have internal predecessors, (7480), 0 states have call successors, (0), 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 18:14:02,174 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 301 flow. Second operand 16 states and 2948 transitions. [2022-11-25 18:14:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 252 transitions, 1357 flow [2022-11-25 18:14:02,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 252 transitions, 1296 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-11-25 18:14:02,181 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 541 flow [2022-11-25 18:14:02,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=541, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2022-11-25 18:14:02,182 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2022-11-25 18:14:02,182 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 541 flow [2022-11-25 18:14:02,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 170.25) internal successors, (1362), 8 states have internal predecessors, (1362), 0 states have call successors, (0), 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 18:14:02,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:02,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:14:02,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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)] Forceful destruction successful, exit code 0 [2022-11-25 18:14:02,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:02,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:14:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1147607222, now seen corresponding path program 1 times [2022-11-25 18:14:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127333416] [2022-11-25 18:14:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:02,401 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 18:14:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:02,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:02,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:14:02,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:02,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:02,675 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 18:14:02,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-25 18:14:02,796 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:14:02,796 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:14:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:14:02,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:14:02,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:02,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127333416] [2022-11-25 18:14:02,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127333416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:02,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:02,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:14:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356279139] [2022-11-25 18:14:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:14:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:14:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:03,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 440 [2022-11-25 18:14:03,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 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 18:14:03,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:03,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 440 [2022-11-25 18:14:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:07,486 INFO L130 PetriNetUnfolder]: 25117/31965 cut-off events. [2022-11-25 18:14:07,486 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-25 18:14:07,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64137 conditions, 31965 events. 25117/31965 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 2103. Compared 173583 event pairs, 11952 based on Foata normal form. 0/7877 useless extension candidates. Maximal degree in co-relation 64120. Up to 31665 conditions per place. [2022-11-25 18:14:07,637 INFO L137 encePairwiseOnDemand]: 437/440 looper letters, 76 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-11-25 18:14:07,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 593 flow [2022-11-25 18:14:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:14:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:14:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2022-11-25 18:14:07,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2022-11-25 18:14:07,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2022-11-25 18:14:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2022-11-25 18:14:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:07,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2022-11-25 18:14:07,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 18:14:07,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:14:07,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 0 states have call successors, (0), 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 18:14:07,648 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 541 flow. Second operand 3 states and 606 transitions. [2022-11-25 18:14:07,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 593 flow [2022-11-25 18:14:07,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 80 transitions, 561 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-11-25 18:14:07,653 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 409 flow [2022-11-25 18:14:07,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2022-11-25 18:14:07,654 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2022-11-25 18:14:07,654 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 409 flow [2022-11-25 18:14:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 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 18:14:07,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:07,655 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:14:07,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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)] Ended with exit code 0 [2022-11-25 18:14:07,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:07,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:14:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:07,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1214844507, now seen corresponding path program 2 times [2022-11-25 18:14:07,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:07,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591381603] [2022-11-25 18:14:07,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:14:07,871 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 18:14:07,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:07,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:07,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:07,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:14:07,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:14:07,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:14:07,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:08,188 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:14:08,189 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:14:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:08,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:14:09,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:09,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591381603] [2022-11-25 18:14:09,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591381603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:14:09,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:14:09,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:14:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705492313] [2022-11-25 18:14:09,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:14:09,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:14:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:14:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:14:16,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 440 [2022-11-25 18:14:16,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 0 states have call successors, (0), 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 18:14:16,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:16,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 440 [2022-11-25 18:14:16,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:14:20,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:14:22,819 WARN L539 Checker$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 18:14:24,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:14:26,824 WARN L539 Checker$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 18:14:40,596 INFO L130 PetriNetUnfolder]: 53448/68271 cut-off events. [2022-11-25 18:14:40,596 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-11-25 18:14:40,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136780 conditions, 68271 events. 53448/68271 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 4131. Compared 403650 event pairs, 25766 based on Foata normal form. 12/17105 useless extension candidates. Maximal degree in co-relation 136761. Up to 15818 conditions per place. [2022-11-25 18:14:40,937 INFO L137 encePairwiseOnDemand]: 432/440 looper letters, 254 selfloop transitions, 37 changer transitions 0/294 dead transitions. [2022-11-25 18:14:40,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 294 transitions, 1587 flow [2022-11-25 18:14:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:14:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:14:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2379 transitions. [2022-11-25 18:14:40,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4505681818181818 [2022-11-25 18:14:40,946 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2379 transitions. [2022-11-25 18:14:40,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2379 transitions. [2022-11-25 18:14:40,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:14:40,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2379 transitions. [2022-11-25 18:14:40,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 198.25) internal successors, (2379), 12 states have internal predecessors, (2379), 0 states have call successors, (0), 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 18:14:40,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 440.0) internal successors, (5720), 13 states have internal predecessors, (5720), 0 states have call successors, (0), 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 18:14:40,966 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 440.0) internal successors, (5720), 13 states have internal predecessors, (5720), 0 states have call successors, (0), 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 18:14:40,967 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 409 flow. Second operand 12 states and 2379 transitions. [2022-11-25 18:14:40,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 294 transitions, 1587 flow [2022-11-25 18:14:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 294 transitions, 1586 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:14:40,975 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 687 flow [2022-11-25 18:14:40,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2022-11-25 18:14:40,976 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 36 predicate places. [2022-11-25 18:14:40,977 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 687 flow [2022-11-25 18:14:40,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 0 states have call successors, (0), 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 18:14:40,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:14:40,978 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:14:40,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:41,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:41,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:14:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash -956023238, now seen corresponding path program 1 times [2022-11-25 18:14:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:14:41,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437056563] [2022-11-25 18:14:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:41,194 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 18:14:41,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:14:41,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:41,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:14:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:41,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 18:14:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:14:41,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:41,573 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:14:41,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2022-11-25 18:14:41,600 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 14 treesize of output 12 [2022-11-25 18:14:41,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:14:41,878 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-11-25 18:14:41,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2022-11-25 18:14:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:14:42,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:14:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:14:42,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:14:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437056563] [2022-11-25 18:14:42,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437056563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:14:42,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:14:42,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:14:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973652205] [2022-11-25 18:14:42,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:14:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:14:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:14:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:14:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:14:46,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 440 [2022-11-25 18:14:46,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 687 flow. Second operand has 8 states, 8 states have (on average 170.75) internal successors, (1366), 8 states have internal predecessors, (1366), 0 states have call successors, (0), 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 18:14:46,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:14:46,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 440 [2022-11-25 18:14:46,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:15:02,304 INFO L130 PetriNetUnfolder]: 51080/65292 cut-off events. [2022-11-25 18:15:02,304 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-25 18:15:02,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130905 conditions, 65292 events. 51080/65292 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 3822. Compared 383874 event pairs, 24633 based on Foata normal form. 0/16780 useless extension candidates. Maximal degree in co-relation 130878. Up to 29602 conditions per place. [2022-11-25 18:15:02,724 INFO L137 encePairwiseOnDemand]: 429/440 looper letters, 214 selfloop transitions, 41 changer transitions 0/258 dead transitions. [2022-11-25 18:15:02,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 258 transitions, 1603 flow [2022-11-25 18:15:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:15:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 18:15:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2935 transitions. [2022-11-25 18:15:02,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4169034090909091 [2022-11-25 18:15:02,734 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2935 transitions. [2022-11-25 18:15:02,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2935 transitions. [2022-11-25 18:15:02,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:15:02,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2935 transitions. [2022-11-25 18:15:02,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 183.4375) internal successors, (2935), 16 states have internal predecessors, (2935), 0 states have call successors, (0), 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 18:15:02,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 440.0) internal successors, (7480), 17 states have internal predecessors, (7480), 0 states have call successors, (0), 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 18:15:02,758 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 440.0) internal successors, (7480), 17 states have internal predecessors, (7480), 0 states have call successors, (0), 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 18:15:02,758 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 687 flow. Second operand 16 states and 2935 transitions. [2022-11-25 18:15:02,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 258 transitions, 1603 flow [2022-11-25 18:15:02,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 258 transitions, 1505 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-11-25 18:15:02,768 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 724 flow [2022-11-25 18:15:02,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=724, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2022-11-25 18:15:02,769 INFO L288 CegarLoopForPetriNet]: 60 programPoint places, 52 predicate places. [2022-11-25 18:15:02,770 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 724 flow [2022-11-25 18:15:02,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 170.75) internal successors, (1366), 8 states have internal predecessors, (1366), 0 states have call successors, (0), 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 18:15:02,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:15:02,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:15:02,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:15:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:15:02,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-25 18:15:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:15:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -956023239, now seen corresponding path program 1 times [2022-11-25 18:15:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:15:02,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095838356] [2022-11-25 18:15:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:15:02,987 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 18:15:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:15:02,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:15:02,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12adce7f-7c1b-4d51-955a-038ac7d36923/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 18:15:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:15:03,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:15:03,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:15:03,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:15:03,301 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-25 18:15:03,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-25 18:15:03,882 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-25 18:15:03,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-25 18:15:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:15:04,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:15:04,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:15:04,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095838356] [2022-11-25 18:15:04,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095838356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:15:04,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:15:04,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:15:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512104335] [2022-11-25 18:15:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:15:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:15:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:15:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:15:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:15:04,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 440 [2022-11-25 18:15:04,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 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 18:15:04,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:15:04,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 440 [2022-11-25 18:15:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand