./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:06,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:06,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:06,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:06,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:06,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:06,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:06,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:06,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:06,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:06,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:06,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:06,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:06,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:06,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:06,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:06,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:06,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:06,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:06,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:06,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:06,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:06,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:06,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:06,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:06,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:06,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:06,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:06,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:06,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:06,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:06,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:06,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:06,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:06,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:06,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:06,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:06,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:06,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:06,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:06,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:06,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:22:06,670 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:06,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:06,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:06,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:06,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:06,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:06,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:06,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:06,675 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:06,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:06,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:06,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:22:06,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:06,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:06,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:06,677 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:22:06,677 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:22:06,678 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:22:06,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:06,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:22:06,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:06,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:06,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:06,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:06,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:06,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:06,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:06,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:06,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:22:06,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:22:06,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:06,688 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:06,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:06,689 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 [2022-11-25 18:22:07,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:07,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:07,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:07,103 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:07,103 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:07,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/unroll-3.wvr.c [2022-11-25 18:22:10,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:10,599 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:10,599 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c [2022-11-25 18:22:10,606 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/698fc1bb6/59d74e81955e4b1299b76b556a6192b8/FLAG3b00769fd [2022-11-25 18:22:10,628 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/698fc1bb6/59d74e81955e4b1299b76b556a6192b8 [2022-11-25 18:22:10,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:10,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:10,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:10,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:10,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:10,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:10" (1/1) ... [2022-11-25 18:22:10,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5905c33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:10, skipping insertion in model container [2022-11-25 18:22:10,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:10" (1/1) ... [2022-11-25 18:22:10,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:10,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:10,866 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c[2500,2513] [2022-11-25 18:22:10,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:10,886 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:22:10,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10c1d48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:10, skipping insertion in model container [2022-11-25 18:22:10,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:10,887 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:22:10,889 INFO L158 Benchmark]: Toolchain (without parser) took 252.26ms. Allocated memory is still 140.5MB. Free memory was 102.4MB in the beginning and 92.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:22:10,890 INFO L158 Benchmark]: CDTParser took 0.96ms. Allocated memory is still 104.9MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:22:10,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.80ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 92.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:22:10,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96ms. Allocated memory is still 104.9MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.80ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 92.3MB 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: 100]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:13,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:13,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:13,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:13,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:13,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:13,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:13,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:13,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:13,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:13,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:13,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:13,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:13,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:13,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:13,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:13,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:13,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:13,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:13,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:13,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:13,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:13,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:13,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:13,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:13,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:13,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:13,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:13,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:13,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:13,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:13,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:13,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:13,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:13,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:13,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:13,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:13,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:13,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:13,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:13,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:13,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:22:13,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:13,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:13,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:13,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:13,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:13,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:13,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:13,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:13,379 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:13,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:13,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:13,381 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:22:13,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:13,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:13,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:13,382 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:22:13,382 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:22:13,383 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:22:13,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:13,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:22:13,384 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:22:13,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:22:13,384 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:13,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:13,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:13,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:13,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:13,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:13,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:13,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:13,386 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:22:13,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:22:13,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:13,387 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:13,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:13,388 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:22:13,388 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 [2022-11-25 18:22:13,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:13,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:13,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:13,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:13,876 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:13,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/unroll-3.wvr.c [2022-11-25 18:22:17,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:17,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:17,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c [2022-11-25 18:22:17,645 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/4ae7de195/21ddc8baa3c744dc8331e000c6462dda/FLAG3fff711d2 [2022-11-25 18:22:17,665 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/data/4ae7de195/21ddc8baa3c744dc8331e000c6462dda [2022-11-25 18:22:17,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:17,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:17,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:17,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:17,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:17,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:17" (1/1) ... [2022-11-25 18:22:17,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4511dd33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:17, skipping insertion in model container [2022-11-25 18:22:17,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:17" (1/1) ... [2022-11-25 18:22:17,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:17,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:17,976 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c[2500,2513] [2022-11-25 18:22:17,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:18,015 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:22:18,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:18,052 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c[2500,2513] [2022-11-25 18:22:18,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:18,067 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:22:18,113 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_cdb50e1f-45b3-4837-81a3-7036b8c7602c/sv-benchmarks/c/weaver/unroll-3.wvr.c[2500,2513] [2022-11-25 18:22:18,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:18,137 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:22:18,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18 WrapperNode [2022-11-25 18:22:18,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:18,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:18,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:22:18,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:22:18,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,214 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 142 [2022-11-25 18:22:18,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:18,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:22:18,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:22:18,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:22:18,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:22:18,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:22:18,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:22:18,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:22:18,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (1/1) ... [2022-11-25 18:22:18,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:18,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:22:18,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:22:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:22:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:22:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:22:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:22:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:22:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:22:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:22:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:22:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:22:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:22:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:22:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:22:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:22:18,425 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:22:18,578 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:22:18,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:22:19,133 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:22:19,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:22:19,143 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:22:19,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:19 BoogieIcfgContainer [2022-11-25 18:22:19,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:22:19,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:22:19,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:22:19,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:22:19,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:17" (1/3) ... [2022-11-25 18:22:19,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c029212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:19, skipping insertion in model container [2022-11-25 18:22:19,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:18" (2/3) ... [2022-11-25 18:22:19,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c029212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:19, skipping insertion in model container [2022-11-25 18:22:19,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:19" (3/3) ... [2022-11-25 18:22:19,155 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2022-11-25 18:22:19,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:22:19,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-25 18:22:19,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:22:19,351 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:22:19,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 205 transitions, 426 flow [2022-11-25 18:22:19,474 INFO L130 PetriNetUnfolder]: 15/203 cut-off events. [2022-11-25 18:22:19,474 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:22:19,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 15/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 260 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-11-25 18:22:19,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 205 transitions, 426 flow [2022-11-25 18:22:19,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 198 transitions, 408 flow [2022-11-25 18:22:19,491 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:22:19,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 198 transitions, 408 flow [2022-11-25 18:22:19,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 198 transitions, 408 flow [2022-11-25 18:22:19,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 198 transitions, 408 flow [2022-11-25 18:22:19,571 INFO L130 PetriNetUnfolder]: 15/198 cut-off events. [2022-11-25 18:22:19,571 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:22:19,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 198 events. 15/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 246 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-11-25 18:22:19,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2022-11-25 18:22:47,732 INFO L134 LiptonReduction]: Checked pairs total: 3867 [2022-11-25 18:22:47,732 INFO L136 LiptonReduction]: Total number of compositions: 225 [2022-11-25 18:22:47,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:22:47,775 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;@63460427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:22:47,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-25 18:22:47,779 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:22:47,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:22:47,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:47,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:22:47,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash 25716, now seen corresponding path program 1 times [2022-11-25 18:22:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:47,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513830506] [2022-11-25 18:22:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:47,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:22:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:22:47,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:48,040 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 18:22:48,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 18:22:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:48,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:48,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513830506] [2022-11-25 18:22:48,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513830506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:48,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:48,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:22:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212517372] [2022-11-25 18:22:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:48,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:48,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:48,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 430 [2022-11-25 18:22:48,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:48,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:48,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 430 [2022-11-25 18:22:48,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:48,604 INFO L130 PetriNetUnfolder]: 457/652 cut-off events. [2022-11-25 18:22:48,604 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-25 18:22:48,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 652 events. 457/652 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 2644 event pairs, 216 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 1138. Up to 646 conditions per place. [2022-11-25 18:22:48,613 INFO L137 encePairwiseOnDemand]: 425/430 looper letters, 29 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-11-25 18:22:48,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 136 flow [2022-11-25 18:22:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2022-11-25 18:22:48,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2022-11-25 18:22:48,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2022-11-25 18:22:48,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2022-11-25 18:22:48,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:48,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2022-11-25 18:22:48,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:48,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:48,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:48,671 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 580 transitions. [2022-11-25 18:22:48,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 136 flow [2022-11-25 18:22:48,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:22:48,682 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2022-11-25 18:22:48,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=70, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-11-25 18:22:48,692 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2022-11-25 18:22:48,692 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2022-11-25 18:22:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:48,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:48,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:22:48,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 18:22:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:48,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 25717, now seen corresponding path program 1 times [2022-11-25 18:22:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:48,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103270409] [2022-11-25 18:22:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:48,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:48,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:48,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:48,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:22:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:48,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:22:48,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:49,130 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:22:49,131 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 [2022-11-25 18:22:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:49,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:49,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:49,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103270409] [2022-11-25 18:22:49,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103270409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:49,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:49,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:22:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308618172] [2022-11-25 18:22:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:49,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:49,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 430 [2022-11-25 18:22:49,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:49,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:49,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 430 [2022-11-25 18:22:49,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:49,817 INFO L130 PetriNetUnfolder]: 457/653 cut-off events. [2022-11-25 18:22:49,817 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:22:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 653 events. 457/653 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 2626 event pairs, 216 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 1304. Up to 647 conditions per place. [2022-11-25 18:22:49,822 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2022-11-25 18:22:49,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 134 flow [2022-11-25 18:22:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-11-25 18:22:49,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2022-11-25 18:22:49,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-11-25 18:22:49,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-11-25 18:22:49,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:49,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-11-25 18:22:49,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:49,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:49,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:49,832 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 575 transitions. [2022-11-25 18:22:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 134 flow [2022-11-25 18:22:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:49,833 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 87 flow [2022-11-25 18:22:49,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-11-25 18:22:49,834 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2022-11-25 18:22:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 87 flow [2022-11-25 18:22:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:49,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:49,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:22:49,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:50,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:50,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:50,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:50,048 INFO L85 PathProgramCache]: Analyzing trace with hash 800190, now seen corresponding path program 1 times [2022-11-25 18:22:50,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704776026] [2022-11-25 18:22:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:50,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:50,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:22:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:50,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:22:50,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:50,239 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:22:50,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 18:22:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:50,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:50,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:50,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704776026] [2022-11-25 18:22:50,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704776026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:22:50,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:22:50,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:22:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763618187] [2022-11-25 18:22:50,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:50,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:22:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:22:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:22:51,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 430 [2022-11-25 18:22:51,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:51,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:51,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 430 [2022-11-25 18:22:51,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:52,914 INFO L130 PetriNetUnfolder]: 919/1311 cut-off events. [2022-11-25 18:22:52,914 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:22:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1311 events. 919/1311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 6241 event pairs, 432 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 2639. Up to 650 conditions per place. [2022-11-25 18:22:52,923 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 56 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2022-11-25 18:22:52,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 321 flow [2022-11-25 18:22:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:22:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:22:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1132 transitions. [2022-11-25 18:22:52,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4387596899224806 [2022-11-25 18:22:52,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1132 transitions. [2022-11-25 18:22:52,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1132 transitions. [2022-11-25 18:22:52,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:52,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1132 transitions. [2022-11-25 18:22:52,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.66666666666666) internal successors, (1132), 6 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:52,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:52,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:52,940 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 87 flow. Second operand 6 states and 1132 transitions. [2022-11-25 18:22:52,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 321 flow [2022-11-25 18:22:52,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 69 transitions, 317 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:52,943 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 181 flow [2022-11-25 18:22:52,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-11-25 18:22:52,944 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2022-11-25 18:22:52,945 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 181 flow [2022-11-25 18:22:52,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:52,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:52,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:22:52,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:53,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash 800312, now seen corresponding path program 1 times [2022-11-25 18:22:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891480577] [2022-11-25 18:22:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:53,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:53,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:53,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:53,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:22:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:22:53,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:53,316 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-25 18:22:53,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-25 18:22:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:22:53,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:53,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:53,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891480577] [2022-11-25 18:22:53,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891480577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:53,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:53,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:22:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64280916] [2022-11-25 18:22:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:53,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:53,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:53,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 430 [2022-11-25 18:22:53,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:53,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:53,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 430 [2022-11-25 18:22:53,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:54,101 INFO L130 PetriNetUnfolder]: 695/1015 cut-off events. [2022-11-25 18:22:54,101 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 18:22:54,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 1015 events. 695/1015 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 4761 event pairs, 326 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 2068. Up to 1003 conditions per place. [2022-11-25 18:22:54,109 INFO L137 encePairwiseOnDemand]: 427/430 looper letters, 35 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-11-25 18:22:54,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 227 flow [2022-11-25 18:22:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-11-25 18:22:54,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2022-11-25 18:22:54,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-11-25 18:22:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-11-25 18:22:54,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:54,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-11-25 18:22:54,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:54,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:54,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:54,119 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 181 flow. Second operand 3 states and 576 transitions. [2022-11-25 18:22:54,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 227 flow [2022-11-25 18:22:54,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 217 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:54,124 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 147 flow [2022-11-25 18:22:54,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-11-25 18:22:54,126 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-11-25 18:22:54,127 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 147 flow [2022-11-25 18:22:54,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:54,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:54,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:22:54,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:54,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:54,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:54,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 800311, now seen corresponding path program 1 times [2022-11-25 18:22:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:54,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047123344] [2022-11-25 18:22:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:54,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:54,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:54,347 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:54,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:22:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:54,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 18:22:54,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:54,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:22:54,570 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-25 18:22:54,571 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 [2022-11-25 18:22:54,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 18:22:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:54,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:54,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:54,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047123344] [2022-11-25 18:22:54,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047123344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:22:54,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:22:54,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:22:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3120136] [2022-11-25 18:22:54,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:22:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:22:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:22:55,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 430 [2022-11-25 18:22:55,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:55,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:55,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 430 [2022-11-25 18:22:55,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:56,861 INFO L130 PetriNetUnfolder]: 582/866 cut-off events. [2022-11-25 18:22:56,862 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 18:22:56,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 866 events. 582/866 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 4030 event pairs, 273 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 1758. Up to 498 conditions per place. [2022-11-25 18:22:56,867 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 48 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2022-11-25 18:22:56,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 303 flow [2022-11-25 18:22:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:22:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:22:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1272 transitions. [2022-11-25 18:22:56,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4225913621262459 [2022-11-25 18:22:56,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1272 transitions. [2022-11-25 18:22:56,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1272 transitions. [2022-11-25 18:22:56,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:56,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1272 transitions. [2022-11-25 18:22:56,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.71428571428572) internal successors, (1272), 7 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:56,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 430.0) internal successors, (3440), 8 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:56,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 430.0) internal successors, (3440), 8 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:56,886 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 147 flow. Second operand 7 states and 1272 transitions. [2022-11-25 18:22:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 303 flow [2022-11-25 18:22:56,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:22:56,892 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 154 flow [2022-11-25 18:22:56,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2022-11-25 18:22:56,895 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2022-11-25 18:22:56,895 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 154 flow [2022-11-25 18:22:56,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:56,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:56,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:22:56,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:57,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:57,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 769115710, now seen corresponding path program 1 times [2022-11-25 18:22:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:57,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135251696] [2022-11-25 18:22:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:57,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:57,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 18:22:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:57,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:22:57,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:57,269 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-25 18:22:57,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-25 18:22:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:22:57,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:57,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:57,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135251696] [2022-11-25 18:22:57,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135251696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:57,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:57,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:22:57,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411206283] [2022-11-25 18:22:57,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:57,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:57,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:57,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2022-11-25 18:22:57,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:57,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:22:57,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2022-11-25 18:22:57,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:22:57,736 INFO L130 PetriNetUnfolder]: 544/804 cut-off events. [2022-11-25 18:22:57,737 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-25 18:22:57,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 804 events. 544/804 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 3654 event pairs, 255 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 1673. Up to 792 conditions per place. [2022-11-25 18:22:57,744 INFO L137 encePairwiseOnDemand]: 427/430 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-25 18:22:57,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 214 flow [2022-11-25 18:22:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:22:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-11-25 18:22:57,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437984496124031 [2022-11-25 18:22:57,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-11-25 18:22:57,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-11-25 18:22:57,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:22:57,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-11-25 18:22:57,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:57,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:57,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:57,752 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 154 flow. Second operand 3 states and 565 transitions. [2022-11-25 18:22:57,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 214 flow [2022-11-25 18:22:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 188 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-25 18:22:57,760 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 126 flow [2022-11-25 18:22:57,760 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=126, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 18:22:57,761 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-11-25 18:22:57,761 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 126 flow [2022-11-25 18:22:57,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:57,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:22:57,762 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:22:57,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:57,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:57,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:22:57,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 769115709, now seen corresponding path program 1 times [2022-11-25 18:22:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508513335] [2022-11-25 18:22:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:57,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:22:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:57,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:22:57,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:22:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:58,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:22:58,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:58,202 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:22:58,202 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 [2022-11-25 18:22:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:58,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:58,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:58,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508513335] [2022-11-25 18:22:58,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508513335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:22:58,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:22:58,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:22:58,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303223839] [2022-11-25 18:22:58,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:58,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:22:58,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:58,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:22:58,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:00,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 430 [2022-11-25 18:23:00,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 174.25) internal successors, (1394), 8 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:00,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:00,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 430 [2022-11-25 18:23:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:00,753 INFO L130 PetriNetUnfolder]: 506/742 cut-off events. [2022-11-25 18:23:00,753 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-25 18:23:00,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 742 events. 506/742 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 3278 event pairs, 237 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 1537. Up to 441 conditions per place. [2022-11-25 18:23:00,757 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 46 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2022-11-25 18:23:00,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 268 flow [2022-11-25 18:23:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:23:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:23:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-25 18:23:00,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42511627906976746 [2022-11-25 18:23:00,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-25 18:23:00,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-25 18:23:00,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:00,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-25 18:23:00,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:00,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:00,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:00,770 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 126 flow. Second operand 5 states and 914 transitions. [2022-11-25 18:23:00,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 268 flow [2022-11-25 18:23:00,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:23:00,772 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 127 flow [2022-11-25 18:23:00,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2022-11-25 18:23:00,773 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2022-11-25 18:23:00,773 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 127 flow [2022-11-25 18:23:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 174.25) internal successors, (1394), 8 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:00,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:00,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:23:00,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:00,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1927223679, now seen corresponding path program 1 times [2022-11-25 18:23:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:00,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952606157] [2022-11-25 18:23:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:00,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:00,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:23:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:01,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:23:01,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:01,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:01,380 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 [2022-11-25 18:23:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:01,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:01,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952606157] [2022-11-25 18:23:01,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952606157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:23:01,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:23:01,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:23:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676112271] [2022-11-25 18:23:01,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:01,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:23:01,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:23:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:03,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 430 [2022-11-25 18:23:03,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 127 flow. Second operand has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:03,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:03,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 430 [2022-11-25 18:23:03,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:04,545 INFO L130 PetriNetUnfolder]: 651/999 cut-off events. [2022-11-25 18:23:04,545 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-25 18:23:04,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 999 events. 651/999 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 5198 event pairs, 145 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 2077. Up to 614 conditions per place. [2022-11-25 18:23:04,551 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 55 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2022-11-25 18:23:04,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 342 flow [2022-11-25 18:23:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:23:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:23:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1281 transitions. [2022-11-25 18:23:04,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4255813953488372 [2022-11-25 18:23:04,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1281 transitions. [2022-11-25 18:23:04,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1281 transitions. [2022-11-25 18:23:04,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:04,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1281 transitions. [2022-11-25 18:23:04,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:04,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 430.0) internal successors, (3440), 8 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:04,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 430.0) internal successors, (3440), 8 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:04,568 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 127 flow. Second operand 7 states and 1281 transitions. [2022-11-25 18:23:04,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 342 flow [2022-11-25 18:23:04,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 337 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:23:04,570 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 167 flow [2022-11-25 18:23:04,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2022-11-25 18:23:04,571 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2022-11-25 18:23:04,571 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 167 flow [2022-11-25 18:23:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.25) internal successors, (1402), 8 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:04,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:04,572 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:23:04,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:04,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:04,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1928401106, now seen corresponding path program 2 times [2022-11-25 18:23:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:04,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632609367] [2022-11-25 18:23:04,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:23:04,796 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 [2022-11-25 18:23:04,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:04,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:04,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:23:04,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:23:04,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:23:04,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:23:04,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:23:04,975 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-25 18:23:04,976 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 [2022-11-25 18:23:04,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 18:23:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:23:05,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:05,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:05,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632609367] [2022-11-25 18:23:05,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632609367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:05,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:05,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:23:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770550035] [2022-11-25 18:23:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:05,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:05,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 430 [2022-11-25 18:23:05,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:05,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:05,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 430 [2022-11-25 18:23:05,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:05,638 INFO L130 PetriNetUnfolder]: 477/775 cut-off events. [2022-11-25 18:23:05,638 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2022-11-25 18:23:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 775 events. 477/775 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 3983 event pairs, 288 based on Foata normal form. 43/444 useless extension candidates. Maximal degree in co-relation 1729. Up to 761 conditions per place. [2022-11-25 18:23:05,642 INFO L137 encePairwiseOnDemand]: 427/430 looper letters, 30 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-11-25 18:23:05,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 33 transitions, 214 flow [2022-11-25 18:23:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:23:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2022-11-25 18:23:05,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2022-11-25 18:23:05,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2022-11-25 18:23:05,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2022-11-25 18:23:05,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:05,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2022-11-25 18:23:05,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:05,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:05,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:05,649 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 167 flow. Second operand 3 states and 570 transitions. [2022-11-25 18:23:05,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 33 transitions, 214 flow [2022-11-25 18:23:05,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 198 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-25 18:23:05,651 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 138 flow [2022-11-25 18:23:05,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=138, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2022-11-25 18:23:05,652 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2022-11-25 18:23:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 138 flow [2022-11-25 18:23:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:05,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:05,653 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:23:05,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-25 18:23:05,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:05,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:05,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1928401227, now seen corresponding path program 2 times [2022-11-25 18:23:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:05,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056975273] [2022-11-25 18:23:05,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:23:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:05,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 18:23:05,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:23:05,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:23:05,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:23:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:06,060 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:23:06,061 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 [2022-11-25 18:23:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:06,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:07,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056975273] [2022-11-25 18:23:07,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056975273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:23:07,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:23:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:23:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508489044] [2022-11-25 18:23:07,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:07,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:23:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:23:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:23:11,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 430 [2022-11-25 18:23:11,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 138 flow. Second operand has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:11,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:11,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 430 [2022-11-25 18:23:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:17,281 INFO L130 PetriNetUnfolder]: 2135/3461 cut-off events. [2022-11-25 18:23:17,281 INFO L131 PetriNetUnfolder]: For 698/698 co-relation queries the response was YES. [2022-11-25 18:23:17,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7680 conditions, 3461 events. 2135/3461 cut-off events. For 698/698 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21641 event pairs, 1296 based on Foata normal form. 6/1840 useless extension candidates. Maximal degree in co-relation 7662. Up to 387 conditions per place. [2022-11-25 18:23:17,297 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 182 selfloop transitions, 12 changer transitions 0/196 dead transitions. [2022-11-25 18:23:17,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 196 transitions, 1031 flow [2022-11-25 18:23:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:23:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:23:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2315 transitions. [2022-11-25 18:23:17,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4486434108527132 [2022-11-25 18:23:17,306 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2315 transitions. [2022-11-25 18:23:17,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2315 transitions. [2022-11-25 18:23:17,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:17,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2315 transitions. [2022-11-25 18:23:17,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.91666666666666) internal successors, (2315), 12 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:17,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 430.0) internal successors, (5590), 13 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:17,323 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 430.0) internal successors, (5590), 13 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:17,323 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 138 flow. Second operand 12 states and 2315 transitions. [2022-11-25 18:23:17,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 196 transitions, 1031 flow [2022-11-25 18:23:17,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 196 transitions, 1030 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:23:17,328 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 240 flow [2022-11-25 18:23:17,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=44, 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=240, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2022-11-25 18:23:17,329 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2022-11-25 18:23:17,330 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 240 flow [2022-11-25 18:23:17,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:17,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:17,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:23:17,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:17,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:17,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1927223680, now seen corresponding path program 1 times [2022-11-25 18:23:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:17,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761604703] [2022-11-25 18:23:17,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:17,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:17,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:17,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:17,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 18:23:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:17,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:23:17,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:17,674 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 18:23:17,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 18:23:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:23:17,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:17,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:17,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761604703] [2022-11-25 18:23:17,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761604703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:17,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112245734] [2022-11-25 18:23:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:23:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:23:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:23:17,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 430 [2022-11-25 18:23:17,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:17,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:17,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 430 [2022-11-25 18:23:17,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:18,590 INFO L130 PetriNetUnfolder]: 1406/2318 cut-off events. [2022-11-25 18:23:18,591 INFO L131 PetriNetUnfolder]: For 644/644 co-relation queries the response was YES. [2022-11-25 18:23:18,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 2318 events. 1406/2318 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13823 event pairs, 801 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 5317. Up to 2260 conditions per place. [2022-11-25 18:23:18,605 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 30 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-11-25 18:23:18,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 38 transitions, 308 flow [2022-11-25 18:23:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:23:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:23:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2022-11-25 18:23:18,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4127906976744186 [2022-11-25 18:23:18,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2022-11-25 18:23:18,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2022-11-25 18:23:18,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:18,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2022-11-25 18:23:18,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:18,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:18,617 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:18,618 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 240 flow. Second operand 4 states and 710 transitions. [2022-11-25 18:23:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 38 transitions, 308 flow [2022-11-25 18:23:18,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 38 transitions, 295 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 18:23:18,622 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 235 flow [2022-11-25 18:23:18,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2022-11-25 18:23:18,623 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2022-11-25 18:23:18,624 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 235 flow [2022-11-25 18:23:18,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.25) internal successors, (693), 4 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:18,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:18,625 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:18,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:18,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash 385608777, now seen corresponding path program 1 times [2022-11-25 18:23:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:18,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336398718] [2022-11-25 18:23:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:18,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:18,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:18,840 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:18,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 18:23:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:18,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 18:23:18,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:19,032 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:23:19,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 18:23:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:23:19,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:23:19,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:19,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336398718] [2022-11-25 18:23:19,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336398718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:23:19,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:23:19,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 18:23:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400567678] [2022-11-25 18:23:19,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:23:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:23:19,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:23:23,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 430 [2022-11-25 18:23:23,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 235 flow. Second operand has 8 states, 8 states have (on average 174.5) internal successors, (1396), 8 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:23,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:23,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 430 [2022-11-25 18:23:23,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:28,319 INFO L130 PetriNetUnfolder]: 1109/1871 cut-off events. [2022-11-25 18:23:28,319 INFO L131 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2022-11-25 18:23:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 1871 events. 1109/1871 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10743 event pairs, 624 based on Foata normal form. 21/1252 useless extension candidates. Maximal degree in co-relation 4286. Up to 1507 conditions per place. [2022-11-25 18:23:28,329 INFO L137 encePairwiseOnDemand]: 422/430 looper letters, 50 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2022-11-25 18:23:28,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 422 flow [2022-11-25 18:23:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 18:23:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 18:23:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1616 transitions. [2022-11-25 18:23:28,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41757105943152456 [2022-11-25 18:23:28,335 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1616 transitions. [2022-11-25 18:23:28,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1616 transitions. [2022-11-25 18:23:28,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:28,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1616 transitions. [2022-11-25 18:23:28,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.55555555555554) internal successors, (1616), 9 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:28,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 430.0) internal successors, (4300), 10 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:28,348 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 430.0) internal successors, (4300), 10 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:28,348 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 235 flow. Second operand 9 states and 1616 transitions. [2022-11-25 18:23:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 422 flow [2022-11-25 18:23:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:23:28,352 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 269 flow [2022-11-25 18:23:28,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=269, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2022-11-25 18:23:28,353 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2022-11-25 18:23:28,353 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 269 flow [2022-11-25 18:23:28,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 174.5) internal successors, (1396), 8 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:28,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:28,354 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:28,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:28,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2122624576, now seen corresponding path program 2 times [2022-11-25 18:23:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:28,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574508420] [2022-11-25 18:23:28,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:23:28,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:28,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:28,575 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:28,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-25 18:23:28,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:23:28,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:23:28,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:23:28,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:28,757 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:23:28,757 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 [2022-11-25 18:23:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:23:28,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:28,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:28,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574508420] [2022-11-25 18:23:28,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574508420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:28,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:28,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11717581] [2022-11-25 18:23:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:28,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:23:28,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:23:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:23:29,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2022-11-25 18:23:29,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:29,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:29,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2022-11-25 18:23:29,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:29,924 INFO L130 PetriNetUnfolder]: 515/977 cut-off events. [2022-11-25 18:23:29,924 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2022-11-25 18:23:29,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 977 events. 515/977 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5409 event pairs, 270 based on Foata normal form. 138/899 useless extension candidates. Maximal degree in co-relation 2243. Up to 919 conditions per place. [2022-11-25 18:23:29,930 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-11-25 18:23:29,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 34 transitions, 305 flow [2022-11-25 18:23:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:23:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:23:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2022-11-25 18:23:29,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2022-11-25 18:23:29,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2022-11-25 18:23:29,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2022-11-25 18:23:29,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:29,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2022-11-25 18:23:29,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:29,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:29,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:29,937 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 269 flow. Second operand 4 states and 736 transitions. [2022-11-25 18:23:29,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 34 transitions, 305 flow [2022-11-25 18:23:29,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 262 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-11-25 18:23:29,940 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 210 flow [2022-11-25 18:23:29,940 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=210, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-11-25 18:23:29,941 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2022-11-25 18:23:29,941 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 210 flow [2022-11-25 18:23:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:29,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:29,942 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-11-25 18:23:29,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-25 18:23:30,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:30,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:23:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash -451059179, now seen corresponding path program 3 times [2022-11-25 18:23:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:30,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583697184] [2022-11-25 18:23:30,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:23:30,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:30,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:30,157 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:23:30,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 18:23:30,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 18:23:30,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:23:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 18:23:30,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:30,483 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 18:23:30,484 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 [2022-11-25 18:23:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:31,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:34,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:34,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583697184] [2022-11-25 18:23:34,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583697184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:23:34,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:23:34,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-25 18:23:34,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464183970] [2022-11-25 18:23:34,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:34,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:23:34,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:34,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:23:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:23:55,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 430 [2022-11-25 18:23:55,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 210 flow. Second operand has 24 states, 24 states have (on average 178.0) internal successors, (4272), 24 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:55,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:55,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 430 [2022-11-25 18:23:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:14,074 INFO L130 PetriNetUnfolder]: 1199/2273 cut-off events. [2022-11-25 18:24:14,074 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2022-11-25 18:24:14,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5062 conditions, 2273 events. 1199/2273 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13333 event pairs, 630 based on Foata normal form. 12/1861 useless extension candidates. Maximal degree in co-relation 5039. Up to 504 conditions per place. [2022-11-25 18:24:14,086 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2022-11-25 18:24:14,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1860 flow [2022-11-25 18:24:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 18:24:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 18:24:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4559 transitions. [2022-11-25 18:24:14,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44176356589147286 [2022-11-25 18:24:14,102 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4559 transitions. [2022-11-25 18:24:14,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4559 transitions. [2022-11-25 18:24:14,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:14,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4559 transitions. [2022-11-25 18:24:14,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 189.95833333333334) internal successors, (4559), 24 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:14,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 430.0) internal successors, (10750), 25 states have internal predecessors, (10750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:14,130 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 430.0) internal successors, (10750), 25 states have internal predecessors, (10750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:14,130 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 210 flow. Second operand 24 states and 4559 transitions. [2022-11-25 18:24:14,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1860 flow [2022-11-25 18:24:14,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:24:14,139 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 394 flow [2022-11-25 18:24:14,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=394, PETRI_PLACES=89, PETRI_TRANSITIONS=47} [2022-11-25 18:24:14,140 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2022-11-25 18:24:14,140 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 394 flow [2022-11-25 18:24:14,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 178.0) internal successors, (4272), 24 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:14,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:14,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:14,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:14,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:14,355 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:14,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1552747686, now seen corresponding path program 1 times [2022-11-25 18:24:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:14,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559708237] [2022-11-25 18:24:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:14,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:14,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:14,357 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:14,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 18:24:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:14,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:24:14,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:14,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:14,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:14,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559708237] [2022-11-25 18:24:14,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559708237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:14,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:14,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:24:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803986845] [2022-11-25 18:24:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:24:14,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 430 [2022-11-25 18:24:14,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:14,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:14,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 430 [2022-11-25 18:24:14,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:15,109 INFO L130 PetriNetUnfolder]: 1493/2756 cut-off events. [2022-11-25 18:24:15,109 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2022-11-25 18:24:15,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2756 events. 1493/2756 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 16732 event pairs, 273 based on Foata normal form. 21/2231 useless extension candidates. Maximal degree in co-relation 6192. Up to 2101 conditions per place. [2022-11-25 18:24:15,122 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 51 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2022-11-25 18:24:15,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 58 transitions, 535 flow [2022-11-25 18:24:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:24:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2022-11-25 18:24:15,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2022-11-25 18:24:15,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2022-11-25 18:24:15,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2022-11-25 18:24:15,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:15,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2022-11-25 18:24:15,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:15,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:15,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:15,129 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 394 flow. Second operand 3 states and 579 transitions. [2022-11-25 18:24:15,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 58 transitions, 535 flow [2022-11-25 18:24:15,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 58 transitions, 511 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-25 18:24:15,137 INFO L231 Difference]: Finished difference. Result has 82 places, 50 transitions, 400 flow [2022-11-25 18:24:15,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=79, 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=400, PETRI_PLACES=82, PETRI_TRANSITIONS=50} [2022-11-25 18:24:15,138 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2022-11-25 18:24:15,138 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 50 transitions, 400 flow [2022-11-25 18:24:15,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:15,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:15,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:15,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-25 18:24:15,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:15,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1256221146, now seen corresponding path program 1 times [2022-11-25 18:24:15,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:15,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867151101] [2022-11-25 18:24:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:15,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:15,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:15,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-25 18:24:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:24:15,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:15,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:15,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867151101] [2022-11-25 18:24:15,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867151101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:15,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:15,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243249946] [2022-11-25 18:24:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:15,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 430 [2022-11-25 18:24:15,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 50 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:15,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:15,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 430 [2022-11-25 18:24:15,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:16,158 INFO L130 PetriNetUnfolder]: 1463/2827 cut-off events. [2022-11-25 18:24:16,158 INFO L131 PetriNetUnfolder]: For 1198/1198 co-relation queries the response was YES. [2022-11-25 18:24:16,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 2827 events. 1463/2827 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17880 event pairs, 300 based on Foata normal form. 160/2867 useless extension candidates. Maximal degree in co-relation 7131. Up to 1582 conditions per place. [2022-11-25 18:24:16,173 INFO L137 encePairwiseOnDemand]: 425/430 looper letters, 50 selfloop transitions, 12 changer transitions 2/65 dead transitions. [2022-11-25 18:24:16,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 65 transitions, 569 flow [2022-11-25 18:24:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:24:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 938 transitions. [2022-11-25 18:24:16,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43627906976744185 [2022-11-25 18:24:16,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 938 transitions. [2022-11-25 18:24:16,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 938 transitions. [2022-11-25 18:24:16,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:16,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 938 transitions. [2022-11-25 18:24:16,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,183 INFO L175 Difference]: Start difference. First operand has 82 places, 50 transitions, 400 flow. Second operand 5 states and 938 transitions. [2022-11-25 18:24:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 65 transitions, 569 flow [2022-11-25 18:24:16,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 65 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:16,192 INFO L231 Difference]: Finished difference. Result has 87 places, 51 transitions, 435 flow [2022-11-25 18:24:16,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=87, PETRI_TRANSITIONS=51} [2022-11-25 18:24:16,193 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2022-11-25 18:24:16,193 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 51 transitions, 435 flow [2022-11-25 18:24:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:16,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:16,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-25 18:24:16,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:16,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash -159942228, now seen corresponding path program 2 times [2022-11-25 18:24:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:16,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877976358] [2022-11-25 18:24:16,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:16,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:16,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:16,409 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:16,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 18:24:16,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:16,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:16,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:24:16,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:16,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:16,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:16,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877976358] [2022-11-25 18:24:16,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877976358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:16,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:16,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2022-11-25 18:24:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135519454] [2022-11-25 18:24:16,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:24:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:24:16,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:24:17,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 430 [2022-11-25 18:24:17,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 51 transitions, 435 flow. Second operand has 10 states, 10 states have (on average 178.6) internal successors, (1786), 10 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:17,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:17,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 430 [2022-11-25 18:24:17,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:19,430 INFO L130 PetriNetUnfolder]: 3423/6707 cut-off events. [2022-11-25 18:24:19,430 INFO L131 PetriNetUnfolder]: For 6069/6069 co-relation queries the response was YES. [2022-11-25 18:24:19,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19953 conditions, 6707 events. 3423/6707 cut-off events. For 6069/6069 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 46882 event pairs, 500 based on Foata normal form. 480/7187 useless extension candidates. Maximal degree in co-relation 19913. Up to 2122 conditions per place. [2022-11-25 18:24:19,481 INFO L137 encePairwiseOnDemand]: 422/430 looper letters, 84 selfloop transitions, 47 changer transitions 6/137 dead transitions. [2022-11-25 18:24:19,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 137 transitions, 1109 flow [2022-11-25 18:24:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:24:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 18:24:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2381 transitions. [2022-11-25 18:24:19,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259391771019678 [2022-11-25 18:24:19,519 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2381 transitions. [2022-11-25 18:24:19,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2381 transitions. [2022-11-25 18:24:19,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:19,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2381 transitions. [2022-11-25 18:24:19,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 183.15384615384616) internal successors, (2381), 13 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:19,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 430.0) internal successors, (6020), 14 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:19,534 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 430.0) internal successors, (6020), 14 states have internal predecessors, (6020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:19,534 INFO L175 Difference]: Start difference. First operand has 87 places, 51 transitions, 435 flow. Second operand 13 states and 2381 transitions. [2022-11-25 18:24:19,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 137 transitions, 1109 flow [2022-11-25 18:24:19,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 137 transitions, 1027 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-11-25 18:24:19,551 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 781 flow [2022-11-25 18:24:19,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=781, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2022-11-25 18:24:19,551 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2022-11-25 18:24:19,552 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 781 flow [2022-11-25 18:24:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 178.6) internal successors, (1786), 10 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:19,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:19,553 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:19,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:19,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:19,766 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:19,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1905484972, now seen corresponding path program 1 times [2022-11-25 18:24:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836393101] [2022-11-25 18:24:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:19,768 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:19,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 18:24:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:19,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:24:19,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:19,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:20,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:20,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836393101] [2022-11-25 18:24:20,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836393101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:20,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:20,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:24:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407181650] [2022-11-25 18:24:20,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:20,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:24:20,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:24:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:24:20,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 430 [2022-11-25 18:24:20,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 183.75) internal successors, (1470), 8 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:20,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:20,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 430 [2022-11-25 18:24:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:22,511 INFO L130 PetriNetUnfolder]: 3823/7407 cut-off events. [2022-11-25 18:24:22,511 INFO L131 PetriNetUnfolder]: For 17221/17561 co-relation queries the response was YES. [2022-11-25 18:24:22,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28078 conditions, 7407 events. 3823/7407 cut-off events. For 17221/17561 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 53705 event pairs, 440 based on Foata normal form. 1020/8267 useless extension candidates. Maximal degree in co-relation 28033. Up to 1942 conditions per place. [2022-11-25 18:24:22,574 INFO L137 encePairwiseOnDemand]: 425/430 looper letters, 91 selfloop transitions, 50 changer transitions 0/143 dead transitions. [2022-11-25 18:24:22,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 143 transitions, 1324 flow [2022-11-25 18:24:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:24:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 18:24:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1500 transitions. [2022-11-25 18:24:22,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2022-11-25 18:24:22,579 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1500 transitions. [2022-11-25 18:24:22,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1500 transitions. [2022-11-25 18:24:22,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:22,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1500 transitions. [2022-11-25 18:24:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.5) internal successors, (1500), 8 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:22,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 430.0) internal successors, (3870), 9 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:22,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 430.0) internal successors, (3870), 9 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:22,592 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 781 flow. Second operand 8 states and 1500 transitions. [2022-11-25 18:24:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 143 transitions, 1324 flow [2022-11-25 18:24:22,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 143 transitions, 1246 flow, removed 36 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:22,767 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 955 flow [2022-11-25 18:24:22,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=955, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2022-11-25 18:24:22,768 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2022-11-25 18:24:22,769 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 955 flow [2022-11-25 18:24:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 183.75) internal successors, (1470), 8 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:22,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:22,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:22,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-25 18:24:22,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:22,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:22,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash 480304504, now seen corresponding path program 3 times [2022-11-25 18:24:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:22,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456683808] [2022-11-25 18:24:22,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:24:22,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:22,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:22,988 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:23,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 18:24:23,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:24:23,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:23,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:24:23,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:23,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:23,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:23,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456683808] [2022-11-25 18:24:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456683808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:23,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:23,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:24:23,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339838516] [2022-11-25 18:24:23,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:23,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2022-11-25 18:24:23,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 955 flow. Second operand has 6 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:23,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:23,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2022-11-25 18:24:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:26,050 INFO L130 PetriNetUnfolder]: 5263/10027 cut-off events. [2022-11-25 18:24:26,050 INFO L131 PetriNetUnfolder]: For 22347/22347 co-relation queries the response was YES. [2022-11-25 18:24:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40862 conditions, 10027 events. 5263/10027 cut-off events. For 22347/22347 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 72735 event pairs, 1180 based on Foata normal form. 80/9987 useless extension candidates. Maximal degree in co-relation 40815. Up to 4442 conditions per place. [2022-11-25 18:24:26,160 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 119 selfloop transitions, 22 changer transitions 1/142 dead transitions. [2022-11-25 18:24:26,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 1488 flow [2022-11-25 18:24:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1117 transitions. [2022-11-25 18:24:26,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43294573643410855 [2022-11-25 18:24:26,166 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1117 transitions. [2022-11-25 18:24:26,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1117 transitions. [2022-11-25 18:24:26,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:26,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1117 transitions. [2022-11-25 18:24:26,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.16666666666666) internal successors, (1117), 6 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:26,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:26,181 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 430.0) internal successors, (3010), 7 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:26,181 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 955 flow. Second operand 6 states and 1117 transitions. [2022-11-25 18:24:26,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 1488 flow [2022-11-25 18:24:26,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 1350 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-25 18:24:26,522 INFO L231 Difference]: Finished difference. Result has 112 places, 114 transitions, 1002 flow [2022-11-25 18:24:26,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1002, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2022-11-25 18:24:26,524 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2022-11-25 18:24:26,524 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 1002 flow [2022-11-25 18:24:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.66666666666666) internal successors, (1090), 6 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:26,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:26,525 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:26,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:26,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:26,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1503034172, now seen corresponding path program 4 times [2022-11-25 18:24:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283043176] [2022-11-25 18:24:26,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:24:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:26,741 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:26,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-25 18:24:26,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:24:26,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:26,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:24:26,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:27,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:24:27,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:27,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283043176] [2022-11-25 18:24:27,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283043176] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:27,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:27,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 18:24:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843719001] [2022-11-25 18:24:27,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:27,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:27,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 430 [2022-11-25 18:24:27,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 1002 flow. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:27,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:27,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 430 [2022-11-25 18:24:27,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:29,101 INFO L130 PetriNetUnfolder]: 4963/9467 cut-off events. [2022-11-25 18:24:29,101 INFO L131 PetriNetUnfolder]: For 20979/21379 co-relation queries the response was YES. [2022-11-25 18:24:29,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36722 conditions, 9467 events. 4963/9467 cut-off events. For 20979/21379 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 69036 event pairs, 900 based on Foata normal form. 380/9767 useless extension candidates. Maximal degree in co-relation 36677. Up to 7200 conditions per place. [2022-11-25 18:24:29,169 INFO L137 encePairwiseOnDemand]: 426/430 looper letters, 97 selfloop transitions, 29 changer transitions 3/131 dead transitions. [2022-11-25 18:24:29,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 131 transitions, 1369 flow [2022-11-25 18:24:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:24:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:24:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2022-11-25 18:24:29,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44011627906976747 [2022-11-25 18:24:29,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2022-11-25 18:24:29,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2022-11-25 18:24:29,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:29,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2022-11-25 18:24:29,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:29,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:29,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 430.0) internal successors, (2150), 5 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:29,176 INFO L175 Difference]: Start difference. First operand has 112 places, 114 transitions, 1002 flow. Second operand 4 states and 757 transitions. [2022-11-25 18:24:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 131 transitions, 1369 flow [2022-11-25 18:24:29,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 1325 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-25 18:24:29,320 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 1150 flow [2022-11-25 18:24:29,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1150, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2022-11-25 18:24:29,321 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2022-11-25 18:24:29,321 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 1150 flow [2022-11-25 18:24:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:29,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:29,322 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:29,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:29,535 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1480634086, now seen corresponding path program 2 times [2022-11-25 18:24:29,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:29,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307896963] [2022-11-25 18:24:29,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:29,537 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:29,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 18:24:29,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:29,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:29,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:24:29,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:29,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:24:29,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307896963] [2022-11-25 18:24:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307896963] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:29,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-25 18:24:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808939803] [2022-11-25 18:24:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:24:30,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 430 [2022-11-25 18:24:30,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 1150 flow. Second operand has 5 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:30,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:30,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 430 [2022-11-25 18:24:30,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:32,673 INFO L130 PetriNetUnfolder]: 5243/9927 cut-off events. [2022-11-25 18:24:32,673 INFO L131 PetriNetUnfolder]: For 24316/24316 co-relation queries the response was YES. [2022-11-25 18:24:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38642 conditions, 9927 events. 5243/9927 cut-off events. For 24316/24316 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 71100 event pairs, 960 based on Foata normal form. 40/9967 useless extension candidates. Maximal degree in co-relation 38595. Up to 6800 conditions per place. [2022-11-25 18:24:32,745 INFO L137 encePairwiseOnDemand]: 424/430 looper letters, 98 selfloop transitions, 38 changer transitions 4/140 dead transitions. [2022-11-25 18:24:32,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 140 transitions, 1493 flow [2022-11-25 18:24:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:24:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2022-11-25 18:24:32,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4306976744186046 [2022-11-25 18:24:32,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 926 transitions. [2022-11-25 18:24:32,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 926 transitions. [2022-11-25 18:24:32,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:32,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 926 transitions. [2022-11-25 18:24:32,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:32,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:32,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:32,751 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 1150 flow. Second operand 5 states and 926 transitions. [2022-11-25 18:24:32,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 140 transitions, 1493 flow [2022-11-25 18:24:32,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 140 transitions, 1476 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:32,929 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 1275 flow [2022-11-25 18:24:32,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1275, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2022-11-25 18:24:32,930 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2022-11-25 18:24:32,930 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 1275 flow [2022-11-25 18:24:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:32,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:32,931 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:32,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:33,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:33,143 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 861560900, now seen corresponding path program 3 times [2022-11-25 18:24:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:33,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271011150] [2022-11-25 18:24:33,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:24:33,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:33,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:33,145 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:33,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-25 18:24:33,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:24:33,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:33,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:24:33,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:24:33,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:33,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:33,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271011150] [2022-11-25 18:24:33,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271011150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:33,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:33,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894211290] [2022-11-25 18:24:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:33,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:33,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2022-11-25 18:24:33,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 1275 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:33,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:33,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2022-11-25 18:24:33,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:35,265 INFO L130 PetriNetUnfolder]: 4603/8587 cut-off events. [2022-11-25 18:24:35,266 INFO L131 PetriNetUnfolder]: For 29413/29573 co-relation queries the response was YES. [2022-11-25 18:24:35,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36805 conditions, 8587 events. 4603/8587 cut-off events. For 29413/29573 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 59503 event pairs, 446 based on Foata normal form. 280/8807 useless extension candidates. Maximal degree in co-relation 36755. Up to 7140 conditions per place. [2022-11-25 18:24:35,332 INFO L137 encePairwiseOnDemand]: 425/430 looper letters, 99 selfloop transitions, 22 changer transitions 0/128 dead transitions. [2022-11-25 18:24:35,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 128 transitions, 1521 flow [2022-11-25 18:24:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:24:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2022-11-25 18:24:35,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4306976744186046 [2022-11-25 18:24:35,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 926 transitions. [2022-11-25 18:24:35,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 926 transitions. [2022-11-25 18:24:35,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:35,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 926 transitions. [2022-11-25 18:24:35,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:35,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:35,345 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:35,345 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 1275 flow. Second operand 5 states and 926 transitions. [2022-11-25 18:24:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 128 transitions, 1521 flow [2022-11-25 18:24:35,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1360 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-11-25 18:24:35,529 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 1137 flow [2022-11-25 18:24:35,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1137, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2022-11-25 18:24:35,530 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2022-11-25 18:24:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 1137 flow [2022-11-25 18:24:35,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:35,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:35,531 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:35,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:35,735 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 157518304, now seen corresponding path program 4 times [2022-11-25 18:24:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273907434] [2022-11-25 18:24:35,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:24:35,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:35,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:35,737 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:35,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-25 18:24:35,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:24:35,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:35,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:24:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:24:35,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:35,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:35,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273907434] [2022-11-25 18:24:35,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273907434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:35,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:35,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949204668] [2022-11-25 18:24:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:35,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:36,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 430 [2022-11-25 18:24:36,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 1137 flow. Second operand has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:36,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:36,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 430 [2022-11-25 18:24:36,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:38,053 INFO L130 PetriNetUnfolder]: 4423/8127 cut-off events. [2022-11-25 18:24:38,053 INFO L131 PetriNetUnfolder]: For 23277/23437 co-relation queries the response was YES. [2022-11-25 18:24:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33484 conditions, 8127 events. 4423/8127 cut-off events. For 23277/23437 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 55104 event pairs, 1430 based on Foata normal form. 160/8227 useless extension candidates. Maximal degree in co-relation 33437. Up to 6402 conditions per place. [2022-11-25 18:24:38,138 INFO L137 encePairwiseOnDemand]: 425/430 looper letters, 96 selfloop transitions, 16 changer transitions 4/122 dead transitions. [2022-11-25 18:24:38,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 122 transitions, 1352 flow [2022-11-25 18:24:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:24:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:24:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 921 transitions. [2022-11-25 18:24:38,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4283720930232558 [2022-11-25 18:24:38,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 921 transitions. [2022-11-25 18:24:38,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 921 transitions. [2022-11-25 18:24:38,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:38,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 921 transitions. [2022-11-25 18:24:38,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:38,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:38,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 430.0) internal successors, (2580), 6 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:38,149 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 1137 flow. Second operand 5 states and 921 transitions. [2022-11-25 18:24:38,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 122 transitions, 1352 flow [2022-11-25 18:24:38,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 122 transitions, 1324 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-25 18:24:38,321 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 1100 flow [2022-11-25 18:24:38,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1100, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2022-11-25 18:24:38,322 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2022-11-25 18:24:38,323 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 1100 flow [2022-11-25 18:24:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:38,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:38,323 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:38,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:38,524 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 18:24:38,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1529735586, now seen corresponding path program 1 times [2022-11-25 18:24:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:38,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15539994] [2022-11-25 18:24:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:38,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:38,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:38,527 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:24:38,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdb50e1f-45b3-4837-81a3-7036b8c7602c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 18:24:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 18:24:38,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:39,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:39,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:39,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:39,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:39,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 18:24:40,636 INFO L321 Elim1Store]: treesize reduction 1428, result has 3.3 percent of original size [2022-11-25 18:24:40,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 6 disjoint index pairs (out of 190 index pairs), introduced 32 new quantified variables, introduced 190 case distinctions, treesize of input 797 treesize of output 235 [2022-11-25 18:24:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:24:40,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:55,641 WARN L233 SmtUtils]: Spent 14.10s on a formula simplification. DAG size of input: 759 DAG size of output: 177 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 18:24:55,644 INFO L321 Elim1Store]: treesize reduction 1590, result has 19.2 percent of original size [2022-11-25 18:24:55,644 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 32 new quantified variables, introduced 190 case distinctions, treesize of input 1160 treesize of output 591