./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8 --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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-2329fc7 [2022-12-13 12:32:27,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:32:27,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:32:27,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:32:27,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:32:27,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:32:27,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:32:27,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:32:27,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:32:27,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:32:27,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:32:27,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:32:27,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:32:27,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:32:27,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:32:27,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:32:27,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:32:27,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:32:27,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:32:27,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:32:27,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:32:27,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:32:27,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:32:27,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:32:27,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:32:27,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:32:27,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:32:27,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:32:27,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:32:27,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:32:27,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:32:27,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:32:27,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:32:27,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:32:27,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:32:27,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:32:27,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:32:27,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:32:27,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:32:27,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:32:27,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:32:27,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:32:27,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:32:27,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:32:27,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:32:27,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:32:27,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:32:27,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:32:27,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:32:27,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:32:27,715 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:32:27,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:32:27,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:32:27,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:32:27,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:32:27,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:32:27,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:32:27,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:32:27,718 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:32:27,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:32:27,718 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:32:27,718 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_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-12-13 12:32:27,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:32:27,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:32:27,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:32:27,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:32:27,917 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:32:27,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-12-13 12:32:30,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:32:30,697 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:32:30,698 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-12-13 12:32:30,703 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/a863ab468/e29d3d96d4d54f4ab58c8ea58d07fb34/FLAG47dea2777 [2022-12-13 12:32:30,713 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/a863ab468/e29d3d96d4d54f4ab58c8ea58d07fb34 [2022-12-13 12:32:30,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:32:30,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:32:30,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:32:30,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:32:30,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:32:30,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:32:30" (1/1) ... [2022-12-13 12:32:30,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de00795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:30, skipping insertion in model container [2022-12-13 12:32:30,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:32:30" (1/1) ... [2022-12-13 12:32:30,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:32:30,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:32:30,864 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_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-12-13 12:32:30,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:32:30,880 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) [2022-12-13 12:32:30,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@791904f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:30, skipping insertion in model container [2022-12-13 12:32:30,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:32:30,881 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 12:32:30,883 INFO L158 Benchmark]: Toolchain (without parser) took 165.78ms. Allocated memory is still 140.5MB. Free memory was 103.9MB in the beginning and 94.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:32:30,883 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:32:30,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.15ms. Allocated memory is still 140.5MB. Free memory was 103.9MB in the beginning and 94.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:32:30,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.15ms. Allocated memory is still 140.5MB. Free memory was 103.9MB in the beginning and 94.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8 --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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-2329fc7 [2022-12-13 12:32:32,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:32:32,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:32:32,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:32:32,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:32:32,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:32:32,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:32:32,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:32:32,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:32:32,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:32:32,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:32:32,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:32:32,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:32:32,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:32:32,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:32:32,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:32:32,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:32:32,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:32:32,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:32:32,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:32:32,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:32:32,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:32:32,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:32:32,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:32:32,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:32:32,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:32:32,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:32:32,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:32:32,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:32:32,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:32:32,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:32:32,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:32:32,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:32:32,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:32:32,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:32:32,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:32:32,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:32:32,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:32:32,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:32:32,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:32:32,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:32:32,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 12:32:32,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:32:32,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:32:32,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:32:32,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:32:32,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:32:32,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:32:32,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:32:32,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:32:32,357 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:32:32,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:32:32,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:32:32,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:32:32,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:32:32,358 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:32:32,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 12:32:32,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 12:32:32,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:32:32,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:32:32,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:32:32,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:32:32,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:32:32,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:32:32,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:32:32,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:32:32,360 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 12:32:32,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 12:32:32,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:32:32,361 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:32:32,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:32:32,361 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 12:32:32,361 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:32:32,361 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_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-12-13 12:32:32,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:32:32,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:32:32,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:32:32,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:32:32,609 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:32:32,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-12-13 12:32:35,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:32:35,297 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:32:35,298 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-12-13 12:32:35,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/7d2d3e06d/d224b01f35404182a8a60e01902bec75/FLAGf06582051 [2022-12-13 12:32:35,314 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/data/7d2d3e06d/d224b01f35404182a8a60e01902bec75 [2022-12-13 12:32:35,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:32:35,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:32:35,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:32:35,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:32:35,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:32:35,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f824d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35, skipping insertion in model container [2022-12-13 12:32:35,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:32:35,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:32:35,463 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_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-12-13 12:32:35,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:32:35,481 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 12:32:35,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:32:35,495 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_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-12-13 12:32:35,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:32:35,501 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:32:35,517 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_f9ea5907-bff7-4391-b559-b37f0fb97664/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-12-13 12:32:35,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:32:35,531 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:32:35,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35 WrapperNode [2022-12-13 12:32:35,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:32:35,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:32:35,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:32:35,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:32:35,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,566 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 162 [2022-12-13 12:32:35,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:32:35,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:32:35,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:32:35,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:32:35,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:32:35,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:32:35,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:32:35,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:32:35,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (1/1) ... [2022-12-13 12:32:35,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:32:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:32:35,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:32:35,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:32:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:32:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 12:32:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:32:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 12:32:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:32:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:32:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:32:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:32:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:32:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:32:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:32:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:32:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 12:32:35,674 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:32:35,771 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:32:35,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:32:36,213 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:32:36,221 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:32:36,221 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 12:32:36,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:32:36 BoogieIcfgContainer [2022-12-13 12:32:36,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:32:36,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:32:36,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:32:36,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:32:36,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:32:35" (1/3) ... [2022-12-13 12:32:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40aebcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:32:36, skipping insertion in model container [2022-12-13 12:32:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:32:35" (2/3) ... [2022-12-13 12:32:36,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40aebcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:32:36, skipping insertion in model container [2022-12-13 12:32:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:32:36" (3/3) ... [2022-12-13 12:32:36,238 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-12-13 12:32:36,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:32:36,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-13 12:32:36,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:32:36,346 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:32:36,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 237 transitions, 490 flow [2022-12-13 12:32:36,461 INFO L130 PetriNetUnfolder]: 17/235 cut-off events. [2022-12-13 12:32:36,462 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:32:36,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 235 events. 17/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 284 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-12-13 12:32:36,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 237 transitions, 490 flow [2022-12-13 12:32:36,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 230 transitions, 472 flow [2022-12-13 12:32:36,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:32:36,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 230 transitions, 472 flow [2022-12-13 12:32:36,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 230 transitions, 472 flow [2022-12-13 12:32:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 230 transitions, 472 flow [2022-12-13 12:32:36,527 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2022-12-13 12:32:36,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:32:36,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 17/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 263 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-12-13 12:32:36,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 6076 [2022-12-13 12:33:05,616 INFO L134 LiptonReduction]: Checked pairs total: 5872 [2022-12-13 12:33:05,616 INFO L136 LiptonReduction]: Total number of compositions: 271 [2022-12-13 12:33:05,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:33:05,631 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;@7db56e7c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:33:05,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-12-13 12:33:05,633 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:33:05,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:33:05,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:05,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:33:05,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 29977, now seen corresponding path program 1 times [2022-12-13 12:33:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:05,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516258519] [2022-12-13 12:33:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:05,646 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 [2022-12-13 12:33:05,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:05,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:05,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:05,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:33:05,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:05,828 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 12:33:05,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 12:33:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:05,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:05,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516258519] [2022-12-13 12:33:05,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516258519] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:05,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:05,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567270288] [2022-12-13 12:33:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:05,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:06,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 508 [2022-12-13 12:33:06,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:06,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 508 [2022-12-13 12:33:06,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:06,369 INFO L130 PetriNetUnfolder]: 611/854 cut-off events. [2022-12-13 12:33:06,369 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 12:33:06,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 854 events. 611/854 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 3616 event pairs, 289 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 1495. Up to 849 conditions per place. [2022-12-13 12:33:06,373 INFO L137 encePairwiseOnDemand]: 501/508 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-12-13 12:33:06,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 144 flow [2022-12-13 12:33:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-12-13 12:33:06,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.442257217847769 [2022-12-13 12:33:06,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-12-13 12:33:06,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-12-13 12:33:06,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:06,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-12-13 12:33:06,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,402 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 3 states and 674 transitions. [2022-12-13 12:33:06,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 144 flow [2022-12-13 12:33:06,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:33:06,405 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 74 flow [2022-12-13 12:33:06,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-13 12:33:06,409 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2022-12-13 12:33:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 74 flow [2022-12-13 12:33:06,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:06,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:33:06,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:06,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:06,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:06,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash 30182, now seen corresponding path program 1 times [2022-12-13 12:33:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032025775] [2022-12-13 12:33:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:06,612 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 [2022-12-13 12:33:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:06,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:06,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:06,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:33:06,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:06,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:06,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:06,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032025775] [2022-12-13 12:33:06,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032025775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:06,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:06,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:06,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518974888] [2022-12-13 12:33:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:06,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:06,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:06,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 508 [2022-12-13 12:33:06,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:06,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:06,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 508 [2022-12-13 12:33:06,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:07,088 INFO L130 PetriNetUnfolder]: 611/856 cut-off events. [2022-12-13 12:33:07,088 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:07,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1717 conditions, 856 events. 611/856 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 3614 event pairs, 289 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 1711. Up to 850 conditions per place. [2022-12-13 12:33:07,091 INFO L137 encePairwiseOnDemand]: 503/508 looper letters, 32 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2022-12-13 12:33:07,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 146 flow [2022-12-13 12:33:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2022-12-13 12:33:07,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44553805774278216 [2022-12-13 12:33:07,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2022-12-13 12:33:07,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2022-12-13 12:33:07,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:07,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2022-12-13 12:33:07,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,099 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 74 flow. Second operand 3 states and 679 transitions. [2022-12-13 12:33:07,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 146 flow [2022-12-13 12:33:07,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:07,100 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 89 flow [2022-12-13 12:33:07,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2022-12-13 12:33:07,101 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2022-12-13 12:33:07,101 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 89 flow [2022-12-13 12:33:07,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:07,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:33:07,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 12:33:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:07,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash 29978, now seen corresponding path program 1 times [2022-12-13 12:33:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087232569] [2022-12-13 12:33:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:07,304 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 [2022-12-13 12:33:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:07,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:07,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:33:07,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:07,412 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:07,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:07,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:07,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:07,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087232569] [2022-12-13 12:33:07,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087232569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:07,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:07,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:07,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515202793] [2022-12-13 12:33:07,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:07,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:07,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:07,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:07,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 508 [2022-12-13 12:33:07,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:07,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 508 [2022-12-13 12:33:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:07,971 INFO L130 PetriNetUnfolder]: 611/855 cut-off events. [2022-12-13 12:33:07,972 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:07,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 855 events. 611/855 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 3746 event pairs, 289 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 1715. Up to 850 conditions per place. [2022-12-13 12:33:07,975 INFO L137 encePairwiseOnDemand]: 505/508 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-12-13 12:33:07,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 155 flow [2022-12-13 12:33:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-12-13 12:33:07,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43963254593175854 [2022-12-13 12:33:07,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-12-13 12:33:07,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-12-13 12:33:07,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:07,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-12-13 12:33:07,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,980 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 89 flow. Second operand 3 states and 670 transitions. [2022-12-13 12:33:07,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 155 flow [2022-12-13 12:33:07,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 151 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:07,981 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 93 flow [2022-12-13 12:33:07,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-12-13 12:33:07,982 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2022-12-13 12:33:07,982 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 93 flow [2022-12-13 12:33:07,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:07,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:07,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:33:07,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 12:33:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:08,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 934359, now seen corresponding path program 1 times [2022-12-13 12:33:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715984452] [2022-12-13 12:33:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:08,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:08,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:08,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:33:08,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:08,333 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-12-13 12:33:08,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 12:33:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:08,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:08,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:08,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715984452] [2022-12-13 12:33:08,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715984452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:08,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:08,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:08,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589865204] [2022-12-13 12:33:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:08,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 508 [2022-12-13 12:33:08,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:08,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:08,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 508 [2022-12-13 12:33:08,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:08,774 INFO L130 PetriNetUnfolder]: 463/661 cut-off events. [2022-12-13 12:33:08,774 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:08,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 661 events. 463/661 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 2798 event pairs, 217 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 1327. Up to 656 conditions per place. [2022-12-13 12:33:08,777 INFO L137 encePairwiseOnDemand]: 505/508 looper letters, 30 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 12:33:08,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 149 flow [2022-12-13 12:33:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2022-12-13 12:33:08,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43241469816272965 [2022-12-13 12:33:08,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2022-12-13 12:33:08,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2022-12-13 12:33:08,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:08,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2022-12-13 12:33:08,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:08,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:08,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:08,786 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 93 flow. Second operand 3 states and 659 transitions. [2022-12-13 12:33:08,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 149 flow [2022-12-13 12:33:08,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:33:08,787 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 85 flow [2022-12-13 12:33:08,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2022-12-13 12:33:08,788 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2022-12-13 12:33:08,788 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 85 flow [2022-12-13 12:33:08,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:08,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:08,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:33:08,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 12:33:08,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:08,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash 934360, now seen corresponding path program 1 times [2022-12-13 12:33:08,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:08,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741166120] [2022-12-13 12:33:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:08,994 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 [2022-12-13 12:33:08,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:08,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:08,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:09,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:33:09,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:09,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:33:09,169 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-12-13 12:33:09,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-12-13 12:33:09,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 12:33:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:09,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:09,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741166120] [2022-12-13 12:33:09,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741166120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:09,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:09,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077030745] [2022-12-13 12:33:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:09,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 508 [2022-12-13 12:33:09,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:09,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:09,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 508 [2022-12-13 12:33:09,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:09,695 INFO L130 PetriNetUnfolder]: 315/467 cut-off events. [2022-12-13 12:33:09,695 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 467 events. 315/467 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 1904 event pairs, 145 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 937. Up to 462 conditions per place. [2022-12-13 12:33:09,696 INFO L137 encePairwiseOnDemand]: 505/508 looper letters, 28 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 12:33:09,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 137 flow [2022-12-13 12:33:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2022-12-13 12:33:09,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43700787401574803 [2022-12-13 12:33:09,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2022-12-13 12:33:09,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2022-12-13 12:33:09,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:09,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2022-12-13 12:33:09,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:09,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:09,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:09,702 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 85 flow. Second operand 3 states and 666 transitions. [2022-12-13 12:33:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 137 flow [2022-12-13 12:33:09,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:09,706 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 80 flow [2022-12-13 12:33:09,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2022-12-13 12:33:09,706 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2022-12-13 12:33:09,707 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 80 flow [2022-12-13 12:33:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:09,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:09,707 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:33:09,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 12:33:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:09,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash 934155, now seen corresponding path program 1 times [2022-12-13 12:33:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:09,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30223249] [2022-12-13 12:33:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:09,911 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 [2022-12-13 12:33:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:09,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:09,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:33:09,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:10,027 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:10,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:10,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:10,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:10,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30223249] [2022-12-13 12:33:10,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30223249] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:10,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:33:10,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 12:33:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471376858] [2022-12-13 12:33:10,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:10,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:33:10,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:33:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:33:10,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 508 [2022-12-13 12:33:10,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:10,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:10,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 508 [2022-12-13 12:33:10,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:11,792 INFO L130 PetriNetUnfolder]: 619/923 cut-off events. [2022-12-13 12:33:11,792 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:33:11,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 923 events. 619/923 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 4415 event pairs, 289 based on Foata normal form. 3/289 useless extension candidates. Maximal degree in co-relation 1855. Up to 459 conditions per place. [2022-12-13 12:33:11,795 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 52 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2022-12-13 12:33:11,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 274 flow [2022-12-13 12:33:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:33:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:33:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1304 transitions. [2022-12-13 12:33:11,798 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42782152230971127 [2022-12-13 12:33:11,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1304 transitions. [2022-12-13 12:33:11,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1304 transitions. [2022-12-13 12:33:11,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:11,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1304 transitions. [2022-12-13 12:33:11,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.33333333333334) internal successors, (1304), 6 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:11,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:11,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:11,804 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 80 flow. Second operand 6 states and 1304 transitions. [2022-12-13 12:33:11,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 274 flow [2022-12-13 12:33:11,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:11,805 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 137 flow [2022-12-13 12:33:11,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-12-13 12:33:11,806 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2022-12-13 12:33:11,806 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 137 flow [2022-12-13 12:33:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:11,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:11,806 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:33:11,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:12,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 897939126, now seen corresponding path program 1 times [2022-12-13 12:33:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958263673] [2022-12-13 12:33:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:12,009 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 [2022-12-13 12:33:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:12,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:12,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:12,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:33:12,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:12,172 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-12-13 12:33:12,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 29 [2022-12-13 12:33:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:12,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:12,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:12,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958263673] [2022-12-13 12:33:12,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958263673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:12,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:12,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094374932] [2022-12-13 12:33:12,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:12,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:12,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 508 [2022-12-13 12:33:12,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:12,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:12,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 508 [2022-12-13 12:33:12,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:12,580 INFO L130 PetriNetUnfolder]: 585/861 cut-off events. [2022-12-13 12:33:12,581 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 12:33:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 861 events. 585/861 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 4007 event pairs, 268 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 1751. Up to 851 conditions per place. [2022-12-13 12:33:12,587 INFO L137 encePairwiseOnDemand]: 505/508 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-12-13 12:33:12,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 197 flow [2022-12-13 12:33:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2022-12-13 12:33:12,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42979002624671914 [2022-12-13 12:33:12,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2022-12-13 12:33:12,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2022-12-13 12:33:12,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:12,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2022-12-13 12:33:12,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:12,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:12,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:12,591 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 137 flow. Second operand 3 states and 655 transitions. [2022-12-13 12:33:12,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 197 flow [2022-12-13 12:33:12,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 185 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:12,593 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 123 flow [2022-12-13 12:33:12,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2022-12-13 12:33:12,593 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2022-12-13 12:33:12,593 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 123 flow [2022-12-13 12:33:12,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:12,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:12,594 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:33:12,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:12,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash 897939124, now seen corresponding path program 1 times [2022-12-13 12:33:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:12,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147285130] [2022-12-13 12:33:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:12,796 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 [2022-12-13 12:33:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:12,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:12,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:12,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:33:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:33:12,927 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-12-13 12:33:12,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-12-13 12:33:12,936 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 39 treesize of output 37 [2022-12-13 12:33:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:12,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:12,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:12,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147285130] [2022-12-13 12:33:12,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147285130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:12,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:12,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:33:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91677326] [2022-12-13 12:33:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:33:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:33:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:33:13,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 508 [2022-12-13 12:33:13,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:13,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 508 [2022-12-13 12:33:13,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:13,377 INFO L130 PetriNetUnfolder]: 539/787 cut-off events. [2022-12-13 12:33:13,378 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 12:33:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 787 events. 539/787 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 3576 event pairs, 246 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 1598. Up to 777 conditions per place. [2022-12-13 12:33:13,380 INFO L137 encePairwiseOnDemand]: 505/508 looper letters, 29 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-12-13 12:33:13,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 179 flow [2022-12-13 12:33:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:33:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:33:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-12-13 12:33:13,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343832020997375 [2022-12-13 12:33:13,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-12-13 12:33:13,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-12-13 12:33:13,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:13,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-12-13 12:33:13,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,385 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 123 flow. Second operand 3 states and 662 transitions. [2022-12-13 12:33:13,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 179 flow [2022-12-13 12:33:13,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:13,386 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 120 flow [2022-12-13 12:33:13,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2022-12-13 12:33:13,386 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2022-12-13 12:33:13,386 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 120 flow [2022-12-13 12:33:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:13,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:13,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:33:13,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 12:33:13,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:13,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2066300672, now seen corresponding path program 1 times [2022-12-13 12:33:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:13,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539955245] [2022-12-13 12:33:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:13,591 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 [2022-12-13 12:33:13,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:13,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:13,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 12:33:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:13,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:33:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:13,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:13,873 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 35 treesize of output 31 [2022-12-13 12:33:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:13,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539955245] [2022-12-13 12:33:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539955245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:13,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:33:13,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 12:33:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518431409] [2022-12-13 12:33:13,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:33:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:33:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:33:15,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 508 [2022-12-13 12:33:15,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 205.25) internal successors, (1642), 8 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:15,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:15,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 508 [2022-12-13 12:33:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:16,512 INFO L130 PetriNetUnfolder]: 681/1051 cut-off events. [2022-12-13 12:33:16,512 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-13 12:33:16,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 1051 events. 681/1051 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 5295 event pairs, 213 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 2132. Up to 647 conditions per place. [2022-12-13 12:33:16,515 INFO L137 encePairwiseOnDemand]: 503/508 looper letters, 59 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2022-12-13 12:33:16,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 345 flow [2022-12-13 12:33:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:33:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:33:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1494 transitions. [2022-12-13 12:33:16,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4201349831271091 [2022-12-13 12:33:16,518 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1494 transitions. [2022-12-13 12:33:16,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1494 transitions. [2022-12-13 12:33:16,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:16,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1494 transitions. [2022-12-13 12:33:16,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.42857142857142) internal successors, (1494), 7 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:16,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:16,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 508.0) internal successors, (4064), 8 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:16,523 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 120 flow. Second operand 7 states and 1494 transitions. [2022-12-13 12:33:16,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 345 flow [2022-12-13 12:33:16,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:33:16,524 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 161 flow [2022-12-13 12:33:16,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2022-12-13 12:33:16,525 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2022-12-13 12:33:16,525 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 161 flow [2022-12-13 12:33:16,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.25) internal successors, (1642), 8 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:16,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:16,526 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:33:16,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-13 12:33:16,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:16,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2066300671, now seen corresponding path program 1 times [2022-12-13 12:33:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:16,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603458020] [2022-12-13 12:33:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:16,727 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 [2022-12-13 12:33:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:16,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:16,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 12:33:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:16,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:33:16,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:16,815 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 12:33:16,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 12:33:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:16,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:16,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:16,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603458020] [2022-12-13 12:33:16,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603458020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:16,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:16,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:33:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764955673] [2022-12-13 12:33:16,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:33:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:33:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:33:16,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 508 [2022-12-13 12:33:16,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:16,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:16,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 508 [2022-12-13 12:33:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:17,341 INFO L130 PetriNetUnfolder]: 445/707 cut-off events. [2022-12-13 12:33:17,341 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-12-13 12:33:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 707 events. 445/707 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3518 event pairs, 248 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 1616. Up to 692 conditions per place. [2022-12-13 12:33:17,344 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 26 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2022-12-13 12:33:17,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 33 transitions, 219 flow [2022-12-13 12:33:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:33:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:33:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 816 transitions. [2022-12-13 12:33:17,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4015748031496063 [2022-12-13 12:33:17,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 816 transitions. [2022-12-13 12:33:17,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 816 transitions. [2022-12-13 12:33:17,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:17,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 816 transitions. [2022-12-13 12:33:17,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:17,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:17,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:17,355 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 161 flow. Second operand 4 states and 816 transitions. [2022-12-13 12:33:17,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 33 transitions, 219 flow [2022-12-13 12:33:17,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 205 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 12:33:17,357 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 153 flow [2022-12-13 12:33:17,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2022-12-13 12:33:17,358 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2022-12-13 12:33:17,358 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 153 flow [2022-12-13 12:33:17,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:17,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:17,359 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 12:33:17,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-13 12:33:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:17,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2064410970, now seen corresponding path program 2 times [2022-12-13 12:33:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:17,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097350178] [2022-12-13 12:33:17,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:33:17,563 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 [2022-12-13 12:33:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:17,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:17,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 12:33:17,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:33:17,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:33:17,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:33:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:17,674 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:17,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:17,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:18,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:18,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097350178] [2022-12-13 12:33:18,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097350178] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:18,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:33:18,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 12:33:18,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193639721] [2022-12-13 12:33:18,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:33:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:33:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:33:22,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 508 [2022-12-13 12:33:22,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:22,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:22,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 508 [2022-12-13 12:33:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:27,073 INFO L130 PetriNetUnfolder]: 1935/3099 cut-off events. [2022-12-13 12:33:27,073 INFO L131 PetriNetUnfolder]: For 859/859 co-relation queries the response was YES. [2022-12-13 12:33:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 3099 events. 1935/3099 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 18991 event pairs, 1108 based on Foata normal form. 6/1800 useless extension candidates. Maximal degree in co-relation 7029. Up to 346 conditions per place. [2022-12-13 12:33:27,082 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 182 selfloop transitions, 12 changer transitions 0/196 dead transitions. [2022-12-13 12:33:27,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 196 transitions, 1034 flow [2022-12-13 12:33:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:33:27,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:33:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2687 transitions. [2022-12-13 12:33:27,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4407808398950131 [2022-12-13 12:33:27,087 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2687 transitions. [2022-12-13 12:33:27,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2687 transitions. [2022-12-13 12:33:27,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:27,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2687 transitions. [2022-12-13 12:33:27,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.91666666666666) internal successors, (2687), 12 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 508.0) internal successors, (6604), 13 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,096 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 508.0) internal successors, (6604), 13 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,096 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 153 flow. Second operand 12 states and 2687 transitions. [2022-12-13 12:33:27,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 196 transitions, 1034 flow [2022-12-13 12:33:27,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 196 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:33:27,099 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 237 flow [2022-12-13 12:33:27,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2022-12-13 12:33:27,099 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2022-12-13 12:33:27,099 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 237 flow [2022-12-13 12:33:27,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:27,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:27,100 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:27,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 12:33:27,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:27,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:27,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash -369187332, now seen corresponding path program 1 times [2022-12-13 12:33:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:27,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382180766] [2022-12-13 12:33:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:27,305 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 [2022-12-13 12:33:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:27,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 12:33:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:27,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:33:27,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:27,506 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:27,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:27,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:33:28,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382180766] [2022-12-13 12:33:28,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382180766] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:28,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:33:28,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 12:33:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245196131] [2022-12-13 12:33:28,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:33:28,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:33:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:33:37,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 508 [2022-12-13 12:33:37,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 237 flow. Second operand has 8 states, 8 states have (on average 204.5) internal successors, (1636), 8 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:37,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:37,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 508 [2022-12-13 12:33:37,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:40,901 INFO L130 PetriNetUnfolder]: 1459/2389 cut-off events. [2022-12-13 12:33:40,902 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-12-13 12:33:40,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2389 events. 1459/2389 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14063 event pairs, 829 based on Foata normal form. 21/1482 useless extension candidates. Maximal degree in co-relation 5445. Up to 2023 conditions per place. [2022-12-13 12:33:40,910 INFO L137 encePairwiseOnDemand]: 498/508 looper letters, 52 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2022-12-13 12:33:40,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 428 flow [2022-12-13 12:33:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:33:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:33:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1892 transitions. [2022-12-13 12:33:40,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4138232720909886 [2022-12-13 12:33:40,914 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1892 transitions. [2022-12-13 12:33:40,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1892 transitions. [2022-12-13 12:33:40,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:40,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1892 transitions. [2022-12-13 12:33:40,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.22222222222223) internal successors, (1892), 9 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:40,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 508.0) internal successors, (5080), 10 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:40,920 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 508.0) internal successors, (5080), 10 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:40,920 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 237 flow. Second operand 9 states and 1892 transitions. [2022-12-13 12:33:40,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 428 flow [2022-12-13 12:33:40,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 415 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 12:33:40,923 INFO L231 Difference]: Finished difference. Result has 71 places, 40 transitions, 273 flow [2022-12-13 12:33:40,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=40} [2022-12-13 12:33:40,923 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2022-12-13 12:33:40,923 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 40 transitions, 273 flow [2022-12-13 12:33:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 204.5) internal successors, (1636), 8 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:40,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:40,924 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 12:33:40,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 12:33:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:41,124 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -301855029, now seen corresponding path program 2 times [2022-12-13 12:33:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258682668] [2022-12-13 12:33:41,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:33:41,127 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 [2022-12-13 12:33:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:41,130 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:41,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 12:33:41,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:33:41,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:33:41,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:33:41,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:41,286 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:41,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 12:33:41,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:33:41,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:41,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258682668] [2022-12-13 12:33:41,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258682668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:41,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:41,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:33:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212836729] [2022-12-13 12:33:41,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:41,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:33:41,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:33:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:33:41,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 508 [2022-12-13 12:33:41,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 40 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:41,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:41,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 508 [2022-12-13 12:33:41,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:42,122 INFO L130 PetriNetUnfolder]: 533/995 cut-off events. [2022-12-13 12:33:42,122 INFO L131 PetriNetUnfolder]: For 968/968 co-relation queries the response was YES. [2022-12-13 12:33:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 995 events. 533/995 cut-off events. For 968/968 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5474 event pairs, 279 based on Foata normal form. 162/941 useless extension candidates. Maximal degree in co-relation 2278. Up to 946 conditions per place. [2022-12-13 12:33:42,125 INFO L137 encePairwiseOnDemand]: 500/508 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-12-13 12:33:42,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 34 transitions, 297 flow [2022-12-13 12:33:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:33:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:33:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2022-12-13 12:33:42,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.422244094488189 [2022-12-13 12:33:42,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2022-12-13 12:33:42,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2022-12-13 12:33:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:42,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2022-12-13 12:33:42,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:42,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:42,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:42,133 INFO L175 Difference]: Start difference. First operand has 71 places, 40 transitions, 273 flow. Second operand 4 states and 858 transitions. [2022-12-13 12:33:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 34 transitions, 297 flow [2022-12-13 12:33:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 34 transitions, 240 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-12-13 12:33:42,135 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 188 flow [2022-12-13 12:33:42,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2022-12-13 12:33:42,136 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2022-12-13 12:33:42,136 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 188 flow [2022-12-13 12:33:42,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:42,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:42,136 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 12:33:42,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 12:33:42,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:33:42,337 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:33:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1517132730, now seen corresponding path program 3 times [2022-12-13 12:33:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:33:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285429361] [2022-12-13 12:33:42,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:33:42,340 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 [2022-12-13 12:33:42,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:33:42,343 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:33:42,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 12:33:42,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 12:33:42,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:33:42,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:33:42,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:33:42,600 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:33:42,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 12:33:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:42,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:33:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:33:45,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:33:45,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285429361] [2022-12-13 12:33:45,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285429361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:33:45,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:33:45,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 12:33:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837259318] [2022-12-13 12:33:45,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:33:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:33:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:33:45,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:33:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:34:03,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 508 [2022-12-13 12:34:03,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 188 flow. Second operand has 24 states, 24 states have (on average 209.0) internal successors, (5016), 24 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:03,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:03,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 508 [2022-12-13 12:34:03,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:20,565 INFO L130 PetriNetUnfolder]: 1201/2275 cut-off events. [2022-12-13 12:34:20,565 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2022-12-13 12:34:20,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 2275 events. 1201/2275 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 13462 event pairs, 631 based on Foata normal form. 12/1863 useless extension candidates. Maximal degree in co-relation 5003. Up to 504 conditions per place. [2022-12-13 12:34:20,578 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2022-12-13 12:34:20,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 322 transitions, 1780 flow [2022-12-13 12:34:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 12:34:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 12:34:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5303 transitions. [2022-12-13 12:34:20,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43495734908136485 [2022-12-13 12:34:20,596 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5303 transitions. [2022-12-13 12:34:20,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5303 transitions. [2022-12-13 12:34:20,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:20,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5303 transitions. [2022-12-13 12:34:20,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 220.95833333333334) internal successors, (5303), 24 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:20,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 508.0) internal successors, (12700), 25 states have internal predecessors, (12700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:20,632 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 508.0) internal successors, (12700), 25 states have internal predecessors, (12700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:20,632 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 188 flow. Second operand 24 states and 5303 transitions. [2022-12-13 12:34:20,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 322 transitions, 1780 flow [2022-12-13 12:34:20,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 322 transitions, 1756 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:34:20,641 INFO L231 Difference]: Finished difference. Result has 88 places, 47 transitions, 346 flow [2022-12-13 12:34:20,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=47} [2022-12-13 12:34:20,641 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2022-12-13 12:34:20,641 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 47 transitions, 346 flow [2022-12-13 12:34:20,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 209.0) internal successors, (5016), 24 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:20,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:20,642 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:20,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 12:34:20,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:20,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash 94353297, now seen corresponding path program 1 times [2022-12-13 12:34:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31639521] [2022-12-13 12:34:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:20,845 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 [2022-12-13 12:34:20,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:20,846 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:20,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 12:34:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:20,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:34:20,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:20,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:20,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:20,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31639521] [2022-12-13 12:34:20,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31639521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:20,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:20,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:34:20,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021402476] [2022-12-13 12:34:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:20,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:34:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:34:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:34:21,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 508 [2022-12-13 12:34:21,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 47 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:21,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 508 [2022-12-13 12:34:21,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:21,568 INFO L130 PetriNetUnfolder]: 1493/2756 cut-off events. [2022-12-13 12:34:21,568 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2022-12-13 12:34:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6187 conditions, 2756 events. 1493/2756 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 16675 event pairs, 273 based on Foata normal form. 21/2231 useless extension candidates. Maximal degree in co-relation 6151. Up to 2101 conditions per place. [2022-12-13 12:34:21,576 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 51 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2022-12-13 12:34:21,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 58 transitions, 487 flow [2022-12-13 12:34:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:34:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:34:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-12-13 12:34:21,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43503937007874016 [2022-12-13 12:34:21,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-12-13 12:34:21,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-12-13 12:34:21,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:21,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-12-13 12:34:21,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 508.0) internal successors, (2032), 4 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,581 INFO L175 Difference]: Start difference. First operand has 88 places, 47 transitions, 346 flow. Second operand 3 states and 663 transitions. [2022-12-13 12:34:21,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 58 transitions, 487 flow [2022-12-13 12:34:21,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 58 transitions, 463 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-12-13 12:34:21,584 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 352 flow [2022-12-13 12:34:21,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2022-12-13 12:34:21,584 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2022-12-13 12:34:21,584 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 352 flow [2022-12-13 12:34:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:21,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:21,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 12:34:21,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:21,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1570807485, now seen corresponding path program 1 times [2022-12-13 12:34:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:21,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528074723] [2022-12-13 12:34:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:21,786 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 [2022-12-13 12:34:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:21,787 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:21,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 12:34:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:21,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:34:21,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:21,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:21,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:21,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528074723] [2022-12-13 12:34:21,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528074723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:21,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:21,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:34:21,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658711322] [2022-12-13 12:34:21,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:34:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:34:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:34:21,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 508 [2022-12-13 12:34:21,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:21,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:21,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 508 [2022-12-13 12:34:21,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:22,707 INFO L130 PetriNetUnfolder]: 2043/3967 cut-off events. [2022-12-13 12:34:22,707 INFO L131 PetriNetUnfolder]: For 1413/1413 co-relation queries the response was YES. [2022-12-13 12:34:22,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9788 conditions, 3967 events. 2043/3967 cut-off events. For 1413/1413 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24824 event pairs, 840 based on Foata normal form. 120/4087 useless extension candidates. Maximal degree in co-relation 9750. Up to 2502 conditions per place. [2022-12-13 12:34:22,718 INFO L137 encePairwiseOnDemand]: 502/508 looper letters, 56 selfloop transitions, 10 changer transitions 6/72 dead transitions. [2022-12-13 12:34:22,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 72 transitions, 561 flow [2022-12-13 12:34:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:34:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:34:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1270 transitions. [2022-12-13 12:34:22,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-13 12:34:22,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1270 transitions. [2022-12-13 12:34:22,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1270 transitions. [2022-12-13 12:34:22,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:22,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1270 transitions. [2022-12-13 12:34:22,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:22,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:22,725 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:22,725 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 352 flow. Second operand 6 states and 1270 transitions. [2022-12-13 12:34:22,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 72 transitions, 561 flow [2022-12-13 12:34:22,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 72 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:34:22,729 INFO L231 Difference]: Finished difference. Result has 88 places, 52 transitions, 395 flow [2022-12-13 12:34:22,729 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=88, PETRI_TRANSITIONS=52} [2022-12-13 12:34:22,730 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2022-12-13 12:34:22,730 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 52 transitions, 395 flow [2022-12-13 12:34:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:22,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:22,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:22,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-12-13 12:34:22,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:22,931 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1114241671, now seen corresponding path program 2 times [2022-12-13 12:34:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:22,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580433204] [2022-12-13 12:34:22,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:22,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:22,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:22,936 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:22,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 12:34:23,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:23,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:34:23,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:23,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:23,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580433204] [2022-12-13 12:34:23,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580433204] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:23,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:23,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-13 12:34:23,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78818313] [2022-12-13 12:34:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:23,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:34:23,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:34:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:34:23,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 508 [2022-12-13 12:34:23,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 52 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:23,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:23,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 508 [2022-12-13 12:34:23,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:24,133 INFO L130 PetriNetUnfolder]: 1883/3607 cut-off events. [2022-12-13 12:34:24,133 INFO L131 PetriNetUnfolder]: For 4457/4557 co-relation queries the response was YES. [2022-12-13 12:34:24,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11353 conditions, 3607 events. 1883/3607 cut-off events. For 4457/4557 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 22513 event pairs, 560 based on Foata normal form. 120/3687 useless extension candidates. Maximal degree in co-relation 11312. Up to 2440 conditions per place. [2022-12-13 12:34:24,144 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 59 selfloop transitions, 5 changer transitions 2/67 dead transitions. [2022-12-13 12:34:24,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 67 transitions, 577 flow [2022-12-13 12:34:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:34:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:34:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 863 transitions. [2022-12-13 12:34:24,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42470472440944884 [2022-12-13 12:34:24,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 863 transitions. [2022-12-13 12:34:24,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 863 transitions. [2022-12-13 12:34:24,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:24,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 863 transitions. [2022-12-13 12:34:24,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:24,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:24,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:24,149 INFO L175 Difference]: Start difference. First operand has 88 places, 52 transitions, 395 flow. Second operand 4 states and 863 transitions. [2022-12-13 12:34:24,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 67 transitions, 577 flow [2022-12-13 12:34:24,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 67 transitions, 550 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 12:34:24,156 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 403 flow [2022-12-13 12:34:24,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2022-12-13 12:34:24,156 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2022-12-13 12:34:24,156 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 403 flow [2022-12-13 12:34:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:24,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:24,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:24,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 12:34:24,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:24,357 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -597514520, now seen corresponding path program 1 times [2022-12-13 12:34:24,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:24,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713820659] [2022-12-13 12:34:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:24,358 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 [2022-12-13 12:34:24,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:24,359 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:24,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 12:34:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:34:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:24,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:24,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:24,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713820659] [2022-12-13 12:34:24,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713820659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:24,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:24,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:34:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553605548] [2022-12-13 12:34:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:24,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:34:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:34:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:34:24,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 508 [2022-12-13 12:34:24,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:24,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:24,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 508 [2022-12-13 12:34:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:25,414 INFO L130 PetriNetUnfolder]: 2043/4127 cut-off events. [2022-12-13 12:34:25,414 INFO L131 PetriNetUnfolder]: For 6713/6713 co-relation queries the response was YES. [2022-12-13 12:34:25,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13192 conditions, 4127 events. 2043/4127 cut-off events. For 6713/6713 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 27435 event pairs, 720 based on Foata normal form. 240/4367 useless extension candidates. Maximal degree in co-relation 13150. Up to 2462 conditions per place. [2022-12-13 12:34:25,430 INFO L137 encePairwiseOnDemand]: 502/508 looper letters, 56 selfloop transitions, 12 changer transitions 10/78 dead transitions. [2022-12-13 12:34:25,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 78 transitions, 654 flow [2022-12-13 12:34:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:34:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:34:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1272 transitions. [2022-12-13 12:34:25,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41732283464566927 [2022-12-13 12:34:25,434 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1272 transitions. [2022-12-13 12:34:25,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1272 transitions. [2022-12-13 12:34:25,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:25,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1272 transitions. [2022-12-13 12:34:25,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:25,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:25,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 508.0) internal successors, (3556), 7 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:25,440 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 403 flow. Second operand 6 states and 1272 transitions. [2022-12-13 12:34:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 78 transitions, 654 flow [2022-12-13 12:34:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 648 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:34:25,458 INFO L231 Difference]: Finished difference. Result has 96 places, 55 transitions, 441 flow [2022-12-13 12:34:25,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=441, PETRI_PLACES=96, PETRI_TRANSITIONS=55} [2022-12-13 12:34:25,459 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2022-12-13 12:34:25,459 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 55 transitions, 441 flow [2022-12-13 12:34:25,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:25,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:25,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:25,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 12:34:25,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:25,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:25,660 INFO L85 PathProgramCache]: Analyzing trace with hash -408581245, now seen corresponding path program 3 times [2022-12-13 12:34:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:25,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84017866] [2022-12-13 12:34:25,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:34:25,661 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 [2022-12-13 12:34:25,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:25,662 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:25,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 12:34:25,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:34:25,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:25,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:34:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:25,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:26,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84017866] [2022-12-13 12:34:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84017866] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:26,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:34:26,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 12:34:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457775044] [2022-12-13 12:34:26,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:34:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:34:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:34:26,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 508 [2022-12-13 12:34:26,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 55 transitions, 441 flow. Second operand has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:26,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:26,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 508 [2022-12-13 12:34:26,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:28,080 INFO L130 PetriNetUnfolder]: 3523/7007 cut-off events. [2022-12-13 12:34:28,080 INFO L131 PetriNetUnfolder]: For 13148/13148 co-relation queries the response was YES. [2022-12-13 12:34:28,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25297 conditions, 7007 events. 3523/7007 cut-off events. For 13148/13148 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 50349 event pairs, 399 based on Foata normal form. 360/7367 useless extension candidates. Maximal degree in co-relation 25252. Up to 2282 conditions per place. [2022-12-13 12:34:28,110 INFO L137 encePairwiseOnDemand]: 500/508 looper letters, 70 selfloop transitions, 46 changer transitions 8/124 dead transitions. [2022-12-13 12:34:28,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 124 transitions, 1062 flow [2022-12-13 12:34:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:34:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:34:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2326 transitions. [2022-12-13 12:34:28,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4162491052254832 [2022-12-13 12:34:28,115 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2326 transitions. [2022-12-13 12:34:28,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2326 transitions. [2022-12-13 12:34:28,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:28,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2326 transitions. [2022-12-13 12:34:28,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 211.45454545454547) internal successors, (2326), 11 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:28,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 508.0) internal successors, (6096), 12 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:28,124 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 508.0) internal successors, (6096), 12 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:28,124 INFO L175 Difference]: Start difference. First operand has 96 places, 55 transitions, 441 flow. Second operand 11 states and 2326 transitions. [2022-12-13 12:34:28,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 124 transitions, 1062 flow [2022-12-13 12:34:28,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 990 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-12-13 12:34:28,167 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 757 flow [2022-12-13 12:34:28,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=757, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2022-12-13 12:34:28,168 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2022-12-13 12:34:28,168 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 757 flow [2022-12-13 12:34:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:28,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:28,169 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:28,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 12:34:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:28,369 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1243081192, now seen corresponding path program 2 times [2022-12-13 12:34:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:28,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086365213] [2022-12-13 12:34:28,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:28,372 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 [2022-12-13 12:34:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:28,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:28,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 12:34:28,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:28,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:28,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:34:28,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:28,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:28,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086365213] [2022-12-13 12:34:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086365213] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:28,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:28,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 12:34:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066095086] [2022-12-13 12:34:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:34:28,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:34:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:34:28,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 508 [2022-12-13 12:34:28,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:28,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:28,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 508 [2022-12-13 12:34:28,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:30,015 INFO L130 PetriNetUnfolder]: 2985/5950 cut-off events. [2022-12-13 12:34:30,016 INFO L131 PetriNetUnfolder]: For 12871/13131 co-relation queries the response was YES. [2022-12-13 12:34:30,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24026 conditions, 5950 events. 2985/5950 cut-off events. For 12871/13131 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 41122 event pairs, 381 based on Foata normal form. 380/6286 useless extension candidates. Maximal degree in co-relation 23981. Up to 4765 conditions per place. [2022-12-13 12:34:30,038 INFO L137 encePairwiseOnDemand]: 504/508 looper letters, 79 selfloop transitions, 15 changer transitions 4/104 dead transitions. [2022-12-13 12:34:30,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 1032 flow [2022-12-13 12:34:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:34:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:34:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2022-12-13 12:34:30,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43061023622047245 [2022-12-13 12:34:30,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2022-12-13 12:34:30,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2022-12-13 12:34:30,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:30,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2022-12-13 12:34:30,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:30,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:30,043 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 508.0) internal successors, (2540), 5 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:30,043 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 757 flow. Second operand 4 states and 875 transitions. [2022-12-13 12:34:30,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 1032 flow [2022-12-13 12:34:30,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 104 transitions, 950 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-12-13 12:34:30,097 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 749 flow [2022-12-13 12:34:30,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=749, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2022-12-13 12:34:30,097 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2022-12-13 12:34:30,097 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 749 flow [2022-12-13 12:34:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:30,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:30,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:30,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 12:34:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:30,299 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1661508686, now seen corresponding path program 3 times [2022-12-13 12:34:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:30,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078761109] [2022-12-13 12:34:30,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:34:30,301 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 [2022-12-13 12:34:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:30,304 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:30,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 12:34:30,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:34:30,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:30,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:34:30,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:30,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:30,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:30,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078761109] [2022-12-13 12:34:30,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078761109] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:30,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:34:30,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-12-13 12:34:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332404754] [2022-12-13 12:34:30,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:30,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:34:30,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:30,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:34:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:34:30,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 508 [2022-12-13 12:34:30,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 749 flow. Second operand has 11 states, 11 states have (on average 206.36363636363637) internal successors, (2270), 11 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:30,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:30,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 508 [2022-12-13 12:34:30,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:32,711 INFO L130 PetriNetUnfolder]: 3503/6667 cut-off events. [2022-12-13 12:34:32,711 INFO L131 PetriNetUnfolder]: For 16873/16873 co-relation queries the response was YES. [2022-12-13 12:34:32,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25538 conditions, 6667 events. 3503/6667 cut-off events. For 16873/16873 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 44503 event pairs, 560 based on Foata normal form. 640/7187 useless extension candidates. Maximal degree in co-relation 25492. Up to 3382 conditions per place. [2022-12-13 12:34:32,736 INFO L137 encePairwiseOnDemand]: 501/508 looper letters, 84 selfloop transitions, 46 changer transitions 3/133 dead transitions. [2022-12-13 12:34:32,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 133 transitions, 1231 flow [2022-12-13 12:34:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:34:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:34:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2100 transitions. [2022-12-13 12:34:32,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41338582677165353 [2022-12-13 12:34:32,740 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2100 transitions. [2022-12-13 12:34:32,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2100 transitions. [2022-12-13 12:34:32,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:32,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2100 transitions. [2022-12-13 12:34:32,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:32,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 508.0) internal successors, (5588), 11 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:32,744 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 508.0) internal successors, (5588), 11 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:32,744 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 749 flow. Second operand 10 states and 2100 transitions. [2022-12-13 12:34:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 133 transitions, 1231 flow [2022-12-13 12:34:32,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 133 transitions, 1200 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 12:34:32,826 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 997 flow [2022-12-13 12:34:32,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=997, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2022-12-13 12:34:32,826 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2022-12-13 12:34:32,826 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 997 flow [2022-12-13 12:34:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 206.36363636363637) internal successors, (2270), 11 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:32,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:32,827 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:32,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 12:34:33,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:33,027 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash 401585150, now seen corresponding path program 1 times [2022-12-13 12:34:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:33,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883205443] [2022-12-13 12:34:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:33,030 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 [2022-12-13 12:34:33,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:33,033 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:33,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 12:34:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:33,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:34:33,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:33,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:34:33,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:34:33,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883205443] [2022-12-13 12:34:33,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883205443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:33,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:34:33,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 12:34:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640001107] [2022-12-13 12:34:33,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:33,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:34:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:34:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:34:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:34:33,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 508 [2022-12-13 12:34:33,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 997 flow. Second operand has 10 states, 10 states have (on average 213.7) internal successors, (2137), 10 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:33,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:33,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 508 [2022-12-13 12:34:33,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:35,720 INFO L130 PetriNetUnfolder]: 4323/7987 cut-off events. [2022-12-13 12:34:35,720 INFO L131 PetriNetUnfolder]: For 26803/26883 co-relation queries the response was YES. [2022-12-13 12:34:35,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36425 conditions, 7987 events. 4323/7987 cut-off events. For 26803/26883 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 53776 event pairs, 280 based on Foata normal form. 860/8667 useless extension candidates. Maximal degree in co-relation 36374. Up to 3302 conditions per place. [2022-12-13 12:34:35,762 INFO L137 encePairwiseOnDemand]: 503/508 looper letters, 98 selfloop transitions, 56 changer transitions 0/160 dead transitions. [2022-12-13 12:34:35,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1655 flow [2022-12-13 12:34:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:34:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:34:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2169 transitions. [2022-12-13 12:34:35,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42696850393700786 [2022-12-13 12:34:35,767 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2169 transitions. [2022-12-13 12:34:35,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2169 transitions. [2022-12-13 12:34:35,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:35,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2169 transitions. [2022-12-13 12:34:35,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 216.9) internal successors, (2169), 10 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:35,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 508.0) internal successors, (5588), 11 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:35,774 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 508.0) internal successors, (5588), 11 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:35,774 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 997 flow. Second operand 10 states and 2169 transitions. [2022-12-13 12:34:35,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1655 flow [2022-12-13 12:34:36,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 1559 flow, removed 33 selfloop flow, removed 4 redundant places. [2022-12-13 12:34:36,102 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 1114 flow [2022-12-13 12:34:36,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=508, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1114, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-12-13 12:34:36,102 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2022-12-13 12:34:36,102 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 1114 flow [2022-12-13 12:34:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.7) internal successors, (2137), 10 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:36,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:36,103 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:36,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 12:34:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:34:36,304 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-12-13 12:34:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash -934241946, now seen corresponding path program 2 times [2022-12-13 12:34:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:34:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463104871] [2022-12-13 12:34:36,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:36,307 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 [2022-12-13 12:34:36,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:34:36,311 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -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) [2022-12-13 12:34:36,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9ea5907-bff7-4391-b559-b37f0fb97664/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 12:34:36,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:36,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:36,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:34:36,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:45,087 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 780 DAG size of output: 204 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 12:34:45,088 INFO L321 Elim1Store]: treesize reduction 1224, result has 22.0 percent of original size [2022-12-13 12:34:45,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 36 new quantified variables, introduced 190 case distinctions, treesize of input 21313 treesize of output 583 [2022-12-13 12:43:35,902 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 4004 DAG size of output: 4004 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)