./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:33:27,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:33:27,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:33:27,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:33:27,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:33:27,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:33:27,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:33:27,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:33:27,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:33:27,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:33:27,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:33:27,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:33:27,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:33:27,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:33:27,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:33:27,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:33:27,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:33:27,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:33:27,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:33:27,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:33:27,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:33:27,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:33:27,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:33:27,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:33:27,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:33:27,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:33:27,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:33:27,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:33:27,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:33:27,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:33:27,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:33:27,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:33:27,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:33:27,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:33:27,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:33:27,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:33:27,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:33:27,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:33:27,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:33:27,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:33:27,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:33:27,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:33:27,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:33:27,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:33:27,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:33:27,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:33:27,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:33:27,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:33:27,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:33:27,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:33:27,255 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:33:27,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:33:27,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:33:27,255 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:33:27,256 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:33:27,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:33:27,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:33:27,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:33:27,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:33:27,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:33:27,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:33:27,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:33:27,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:27,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:33:27,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:33:27,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:33:27,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:33:27,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:33:27,259 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:33:27,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:33:27,259 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:33:27,259 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-12-13 11:33:27,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:33:27,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:33:27,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:33:27,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:33:27,465 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:33:27,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-12-13 11:33:30,099 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:33:30,259 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:33:30,260 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-12-13 11:33:30,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/415ae4903/db8a08eac6014ff2abe2a177555568c7/FLAG9bc0941aa [2022-12-13 11:33:30,278 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/415ae4903/db8a08eac6014ff2abe2a177555568c7 [2022-12-13 11:33:30,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:33:30,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:33:30,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:30,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:33:30,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:33:30,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:30" (1/1) ... [2022-12-13 11:33:30,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df23841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:30, skipping insertion in model container [2022-12-13 11:33:30,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:30" (1/1) ... [2022-12-13 11:33:30,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:33:30,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:33:30,478 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-13 11:33:30,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:30,497 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 11:33:30,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dd182b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:30, skipping insertion in model container [2022-12-13 11:33:30,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:30,499 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 11:33:30,500 INFO L158 Benchmark]: Toolchain (without parser) took 218.39ms. Allocated memory is still 161.5MB. Free memory was 102.6MB in the beginning and 133.9MB in the end (delta: -31.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:33:30,501 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 98.6MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:33:30,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.65ms. Allocated memory is still 161.5MB. Free memory was 102.3MB in the beginning and 133.9MB in the end (delta: -31.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:33:30,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 98.6MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.65ms. Allocated memory is still 161.5MB. Free memory was 102.3MB in the beginning and 133.9MB in the end (delta: -31.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:33:31,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:33:31,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:33:31,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:33:31,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:33:31,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:33:31,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:33:31,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:33:31,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:33:31,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:33:31,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:33:31,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:33:31,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:33:31,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:33:31,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:33:31,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:33:31,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:33:31,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:33:31,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:33:31,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:33:31,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:33:31,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:33:31,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:33:31,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:33:31,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:33:31,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:33:31,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:33:31,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:33:31,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:33:31,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:33:31,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:33:31,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:33:31,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:33:31,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:33:31,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:33:31,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:33:31,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:33:31,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:33:31,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:33:31,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:33:31,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:33:31,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 11:33:31,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:33:31,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:33:31,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:33:31,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:33:31,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:33:31,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:33:31,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:33:31,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:33:31,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:33:31,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:33:31,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:33:31,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:33:31,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:33:31,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:33:31,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:33:31,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:31,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:33:31,960 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:33:31,961 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:33:31,961 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-12-13 11:33:32,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:33:32,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:33:32,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:33:32,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:33:32,187 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:33:32,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-12-13 11:33:34,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:33:35,015 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:33:35,016 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-12-13 11:33:35,021 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/e9984c509/4a7a74ec07ce41739379380d3beeb235/FLAG6f99186d9 [2022-12-13 11:33:35,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/data/e9984c509/4a7a74ec07ce41739379380d3beeb235 [2022-12-13 11:33:35,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:33:35,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:33:35,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:35,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:33:35,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:33:35,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de427dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35, skipping insertion in model container [2022-12-13 11:33:35,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:33:35,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:33:35,182 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-13 11:33:35,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:35,201 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 11:33:35,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:33:35,225 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-13 11:33:35,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:35,231 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:33:35,250 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_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-13 11:33:35,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:33:35,264 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:33:35,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35 WrapperNode [2022-12-13 11:33:35,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:33:35,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:35,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:33:35,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:33:35,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,299 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 202 [2022-12-13 11:33:35,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:33:35,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:33:35,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:33:35,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:33:35,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:33:35,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:33:35,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:33:35,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:33:35,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (1/1) ... [2022-12-13 11:33:35,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:33:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:35,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:33:35,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 11:33:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:33:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:33:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:33:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:33:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 11:33:35,386 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:33:35,473 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:33:35,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:33:35,990 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:33:36,000 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:33:36,000 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 11:33:36,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:33:36 BoogieIcfgContainer [2022-12-13 11:33:36,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:33:36,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:33:36,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:33:36,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:33:36,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:33:35" (1/3) ... [2022-12-13 11:33:36,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac5eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:33:36, skipping insertion in model container [2022-12-13 11:33:36,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:33:35" (2/3) ... [2022-12-13 11:33:36,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac5eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:33:36, skipping insertion in model container [2022-12-13 11:33:36,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:33:36" (3/3) ... [2022-12-13 11:33:36,011 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-12-13 11:33:36,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:33:36,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 11:33:36,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:33:36,129 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:33:36,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 301 transitions, 618 flow [2022-12-13 11:33:36,252 INFO L130 PetriNetUnfolder]: 24/299 cut-off events. [2022-12-13 11:33:36,252 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:33:36,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 299 events. 24/299 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 690 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2022-12-13 11:33:36,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 301 transitions, 618 flow [2022-12-13 11:33:36,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 294 transitions, 600 flow [2022-12-13 11:33:36,271 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:33:36,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 294 transitions, 600 flow [2022-12-13 11:33:36,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 294 transitions, 600 flow [2022-12-13 11:33:36,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 294 transitions, 600 flow [2022-12-13 11:33:36,335 INFO L130 PetriNetUnfolder]: 24/294 cut-off events. [2022-12-13 11:33:36,335 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:33:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 294 events. 24/294 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 674 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2022-12-13 11:33:36,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 10684 [2022-12-13 11:34:43,276 INFO L134 LiptonReduction]: Checked pairs total: 10001 [2022-12-13 11:34:43,277 INFO L136 LiptonReduction]: Total number of compositions: 355 [2022-12-13 11:34:43,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:34:43,295 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;@3c89bc5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:34:43,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-12-13 11:34:43,297 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:34:43,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:34:43,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:43,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:34:43,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash 40269, now seen corresponding path program 1 times [2022-12-13 11:34:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:43,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343401740] [2022-12-13 11:34:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:43,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 11:34:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:43,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:34:43,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:43,556 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:34:43,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:34:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:43,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:34:43,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:43,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343401740] [2022-12-13 11:34:43,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343401740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:43,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:43,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:34:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815352626] [2022-12-13 11:34:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:43,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:34:43,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:34:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:34:43,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 656 [2022-12-13 11:34:43,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:43,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:43,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 656 [2022-12-13 11:34:43,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:45,389 INFO L130 PetriNetUnfolder]: 2335/3206 cut-off events. [2022-12-13 11:34:45,389 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-13 11:34:45,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6465 conditions, 3206 events. 2335/3206 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 16919 event pairs, 1135 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 2823. Up to 1608 conditions per place. [2022-12-13 11:34:45,407 INFO L137 encePairwiseOnDemand]: 648/656 looper letters, 78 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2022-12-13 11:34:45,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 348 flow [2022-12-13 11:34:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:34:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:34:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2022-12-13 11:34:45,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4639227642276423 [2022-12-13 11:34:45,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2022-12-13 11:34:45,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2022-12-13 11:34:45,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:45,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2022-12-13 11:34:45,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,438 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 108 flow. Second operand 3 states and 913 transitions. [2022-12-13 11:34:45,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 348 flow [2022-12-13 11:34:45,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:34:45,446 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 102 flow [2022-12-13 11:34:45,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-12-13 11:34:45,450 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2022-12-13 11:34:45,450 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 102 flow [2022-12-13 11:34:45,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:45,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:34:45,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:34:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:45,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash 40467, now seen corresponding path program 1 times [2022-12-13 11:34:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:45,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698775665] [2022-12-13 11:34:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:45,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:45,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:45,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:45,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 11:34:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:45,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:34:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:45,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:34:45,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:45,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698775665] [2022-12-13 11:34:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698775665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:45,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:45,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:34:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154491302] [2022-12-13 11:34:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:45,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:34:45,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:34:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:34:45,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 656 [2022-12-13 11:34:45,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:45,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 656 [2022-12-13 11:34:45,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:46,659 INFO L130 PetriNetUnfolder]: 1179/1617 cut-off events. [2022-12-13 11:34:46,659 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:34:46,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 1617 events. 1179/1617 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 7901 event pairs, 569 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 3231. Up to 1611 conditions per place. [2022-12-13 11:34:46,667 INFO L137 encePairwiseOnDemand]: 651/656 looper letters, 41 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2022-12-13 11:34:46,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 190 flow [2022-12-13 11:34:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:34:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:34:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2022-12-13 11:34:46,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4425813008130081 [2022-12-13 11:34:46,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2022-12-13 11:34:46,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2022-12-13 11:34:46,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:46,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2022-12-13 11:34:46,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:46,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:46,684 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:46,685 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 102 flow. Second operand 3 states and 871 transitions. [2022-12-13 11:34:46,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 190 flow [2022-12-13 11:34:46,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:34:46,687 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 112 flow [2022-12-13 11:34:46,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-12-13 11:34:46,688 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2022-12-13 11:34:46,688 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 112 flow [2022-12-13 11:34:46,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:46,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:46,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:34:46,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 11:34:46,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:46,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash 40268, now seen corresponding path program 1 times [2022-12-13 11:34:46,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:46,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867590156] [2022-12-13 11:34:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:46,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:46,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:46,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:46,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 11:34:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:46,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:34:46,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:46,970 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 11:34:46,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 11:34:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:46,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:34:46,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:46,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867590156] [2022-12-13 11:34:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867590156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:46,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:46,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:34:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372219788] [2022-12-13 11:34:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:34:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:34:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:34:47,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 656 [2022-12-13 11:34:47,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:47,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:47,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 656 [2022-12-13 11:34:47,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:47,728 INFO L130 PetriNetUnfolder]: 1179/1615 cut-off events. [2022-12-13 11:34:47,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:34:47,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 1615 events. 1179/1615 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 7629 event pairs, 569 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 3232. Up to 1610 conditions per place. [2022-12-13 11:34:47,737 INFO L137 encePairwiseOnDemand]: 654/656 looper letters, 40 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 11:34:47,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 192 flow [2022-12-13 11:34:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:34:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:34:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2022-12-13 11:34:47,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4369918699186992 [2022-12-13 11:34:47,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2022-12-13 11:34:47,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2022-12-13 11:34:47,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:47,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2022-12-13 11:34:47,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:47,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:47,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:47,743 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 112 flow. Second operand 3 states and 860 transitions. [2022-12-13 11:34:47,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 192 flow [2022-12-13 11:34:47,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 11:34:47,744 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 106 flow [2022-12-13 11:34:47,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2022-12-13 11:34:47,745 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2022-12-13 11:34:47,745 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 106 flow [2022-12-13 11:34:47,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:47,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:47,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:34:47,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-13 11:34:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:47,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1254012, now seen corresponding path program 1 times [2022-12-13 11:34:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180415385] [2022-12-13 11:34:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:47,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:47,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 11:34:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:47,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:34:47,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:48,049 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:34:48,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:34:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:48,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:48,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:48,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180415385] [2022-12-13 11:34:48,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180415385] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:48,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:34:48,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 11:34:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584850868] [2022-12-13 11:34:48,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:34:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:34:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:34:49,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 656 [2022-12-13 11:34:49,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:49,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:49,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 656 [2022-12-13 11:34:49,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:51,157 INFO L130 PetriNetUnfolder]: 2341/3213 cut-off events. [2022-12-13 11:34:51,157 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:34:51,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 3213 events. 2341/3213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 17326 event pairs, 1135 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 6443. Up to 1607 conditions per place. [2022-12-13 11:34:51,166 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 76 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2022-12-13 11:34:51,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 400 flow [2022-12-13 11:34:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:34:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:34:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1698 transitions. [2022-12-13 11:34:51,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43140243902439024 [2022-12-13 11:34:51,170 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1698 transitions. [2022-12-13 11:34:51,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1698 transitions. [2022-12-13 11:34:51,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:51,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1698 transitions. [2022-12-13 11:34:51,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:51,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:51,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 656.0) internal successors, (4592), 7 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:51,178 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 106 flow. Second operand 6 states and 1698 transitions. [2022-12-13 11:34:51,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 400 flow [2022-12-13 11:34:51,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 89 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:34:51,179 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 203 flow [2022-12-13 11:34:51,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2022-12-13 11:34:51,180 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-13 11:34:51,180 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 203 flow [2022-12-13 11:34:51,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:51,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:51,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:34:51,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 11:34:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:51,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1254210, now seen corresponding path program 1 times [2022-12-13 11:34:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:51,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274664999] [2022-12-13 11:34:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:51,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:51,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:51,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:51,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 11:34:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:51,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:34:51,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:51,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:34:51,515 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-12-13 11:34:51,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-12-13 11:34:51,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 11:34:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:51,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:51,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274664999] [2022-12-13 11:34:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274664999] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:51,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:34:51,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 11:34:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022881722] [2022-12-13 11:34:51,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:51,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:34:51,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:34:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:34:53,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 656 [2022-12-13 11:34:53,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:53,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:53,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 656 [2022-12-13 11:34:53,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:55,481 INFO L130 PetriNetUnfolder]: 2046/2833 cut-off events. [2022-12-13 11:34:55,481 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 11:34:55,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5723 conditions, 2833 events. 2046/2833 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 15220 event pairs, 991 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 5709. Up to 1586 conditions per place. [2022-12-13 11:34:55,489 INFO L137 encePairwiseOnDemand]: 649/656 looper letters, 72 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2022-12-13 11:34:55,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 439 flow [2022-12-13 11:34:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:34:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:34:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1935 transitions. [2022-12-13 11:34:55,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213850174216028 [2022-12-13 11:34:55,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1935 transitions. [2022-12-13 11:34:55,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1935 transitions. [2022-12-13 11:34:55,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:55,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1935 transitions. [2022-12-13 11:34:55,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 276.42857142857144) internal successors, (1935), 7 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:55,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 656.0) internal successors, (5248), 8 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:55,501 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 656.0) internal successors, (5248), 8 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:55,501 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 203 flow. Second operand 7 states and 1935 transitions. [2022-12-13 11:34:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 439 flow [2022-12-13 11:34:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 419 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 11:34:55,503 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 193 flow [2022-12-13 11:34:55,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2022-12-13 11:34:55,504 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2022-12-13 11:34:55,504 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 193 flow [2022-12-13 11:34:55,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:55,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:55,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:34:55,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 11:34:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:55,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1254208, now seen corresponding path program 1 times [2022-12-13 11:34:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510582239] [2022-12-13 11:34:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:55,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:55,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 11:34:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:55,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:34:55,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:55,826 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-13 11:34:55,827 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 [2022-12-13 11:34:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:34:55,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:34:55,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:55,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510582239] [2022-12-13 11:34:55,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510582239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:55,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:55,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:34:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337272990] [2022-12-13 11:34:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:34:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:34:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:34:56,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 656 [2022-12-13 11:34:56,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:56,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:56,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 656 [2022-12-13 11:34:56,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:56,759 INFO L130 PetriNetUnfolder]: 1483/2097 cut-off events. [2022-12-13 11:34:56,759 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-12-13 11:34:56,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4325 conditions, 2097 events. 1483/2097 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 11179 event pairs, 706 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 4309. Up to 2087 conditions per place. [2022-12-13 11:34:56,772 INFO L137 encePairwiseOnDemand]: 653/656 looper letters, 43 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2022-12-13 11:34:56,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 255 flow [2022-12-13 11:34:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:34:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:34:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 859 transitions. [2022-12-13 11:34:56,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43648373983739835 [2022-12-13 11:34:56,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 859 transitions. [2022-12-13 11:34:56,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 859 transitions. [2022-12-13 11:34:56,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:56,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 859 transitions. [2022-12-13 11:34:56,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:56,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:56,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:56,784 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 193 flow. Second operand 3 states and 859 transitions. [2022-12-13 11:34:56,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 255 flow [2022-12-13 11:34:56,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 229 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-13 11:34:56,787 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 143 flow [2022-12-13 11:34:56,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2022-12-13 11:34:56,788 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-13 11:34:56,788 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 143 flow [2022-12-13 11:34:56,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:56,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:56,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:34:56,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 11:34:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:56,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:34:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1205323267, now seen corresponding path program 1 times [2022-12-13 11:34:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:34:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244109811] [2022-12-13 11:34:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:34:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:34:56,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:34:56,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 11:34:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:34:57,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:57,113 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:34:57,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:34:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:57,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:57,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:34:57,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244109811] [2022-12-13 11:34:57,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244109811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:57,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:34:57,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 11:34:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229681625] [2022-12-13 11:34:57,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:34:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:34:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:34:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:34:59,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 656 [2022-12-13 11:34:59,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 143 flow. Second operand has 8 states, 8 states have (on average 265.25) internal successors, (2122), 8 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:59,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:59,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 656 [2022-12-13 11:34:59,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:00,410 INFO L130 PetriNetUnfolder]: 1384/1954 cut-off events. [2022-12-13 11:35:00,410 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-12-13 11:35:00,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4024 conditions, 1954 events. 1384/1954 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 10269 event pairs, 666 based on Foata normal form. 0/583 useless extension candidates. Maximal degree in co-relation 4009. Up to 1152 conditions per place. [2022-12-13 11:35:00,415 INFO L137 encePairwiseOnDemand]: 652/656 looper letters, 70 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2022-12-13 11:35:00,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 357 flow [2022-12-13 11:35:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:35:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:35:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1393 transitions. [2022-12-13 11:35:00,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4246951219512195 [2022-12-13 11:35:00,418 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1393 transitions. [2022-12-13 11:35:00,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1393 transitions. [2022-12-13 11:35:00,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:00,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1393 transitions. [2022-12-13 11:35:00,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 278.6) internal successors, (1393), 5 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:00,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:00,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:00,423 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 143 flow. Second operand 5 states and 1393 transitions. [2022-12-13 11:35:00,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 357 flow [2022-12-13 11:35:00,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:35:00,424 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 144 flow [2022-12-13 11:35:00,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2022-12-13 11:35:00,425 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2022-12-13 11:35:00,425 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 144 flow [2022-12-13 11:35:00,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 265.25) internal successors, (2122), 8 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:00,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:00,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:35:00,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-13 11:35:00,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:00,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1205323269, now seen corresponding path program 1 times [2022-12-13 11:35:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266580929] [2022-12-13 11:35:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:00,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:00,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:00,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:00,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 11:35:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:00,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:35:00,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:00,836 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-12-13 11:35:00,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 29 [2022-12-13 11:35:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:35:00,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:35:00,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:00,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266580929] [2022-12-13 11:35:00,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266580929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:00,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:00,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:35:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551833379] [2022-12-13 11:35:00,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:00,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:35:00,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:35:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:35:00,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 656 [2022-12-13 11:35:00,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:00,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:00,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 656 [2022-12-13 11:35:00,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:01,514 INFO L130 PetriNetUnfolder]: 1327/1853 cut-off events. [2022-12-13 11:35:01,514 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-13 11:35:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 1853 events. 1327/1853 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 9523 event pairs, 630 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 3811. Up to 1843 conditions per place. [2022-12-13 11:35:01,519 INFO L137 encePairwiseOnDemand]: 653/656 looper letters, 39 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 11:35:01,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 220 flow [2022-12-13 11:35:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:35:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:35:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2022-12-13 11:35:01,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2022-12-13 11:35:01,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2022-12-13 11:35:01,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2022-12-13 11:35:01,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:01,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2022-12-13 11:35:01,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:01,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:01,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:01,524 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 144 flow. Second operand 3 states and 846 transitions. [2022-12-13 11:35:01,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 220 flow [2022-12-13 11:35:01,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 11:35:01,525 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 137 flow [2022-12-13 11:35:01,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2022-12-13 11:35:01,526 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2022-12-13 11:35:01,526 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 137 flow [2022-12-13 11:35:01,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:01,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:01,526 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:35:01,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 11:35:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:01,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1290800685, now seen corresponding path program 2 times [2022-12-13 11:35:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:01,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917626029] [2022-12-13 11:35:01,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:35:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:01,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:01,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 11:35:01,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:35:01,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:01,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:35:01,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:35:01,849 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-12-13 11:35:01,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-12-13 11:35:01,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 11:35:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:35:01,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:35:01,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:01,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917626029] [2022-12-13 11:35:01,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917626029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:01,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:01,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:35:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434264344] [2022-12-13 11:35:01,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:01,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:35:01,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:35:01,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:35:02,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 656 [2022-12-13 11:35:02,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:02,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 656 [2022-12-13 11:35:02,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:02,779 INFO L130 PetriNetUnfolder]: 1035/1475 cut-off events. [2022-12-13 11:35:02,779 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-13 11:35:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2987 conditions, 1475 events. 1035/1475 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 7498 event pairs, 486 based on Foata normal form. 81/534 useless extension candidates. Maximal degree in co-relation 2971. Up to 1465 conditions per place. [2022-12-13 11:35:02,782 INFO L137 encePairwiseOnDemand]: 653/656 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 11:35:02,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 203 flow [2022-12-13 11:35:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:35:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:35:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2022-12-13 11:35:02,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4334349593495935 [2022-12-13 11:35:02,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2022-12-13 11:35:02,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2022-12-13 11:35:02,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:02,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2022-12-13 11:35:02,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,787 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 137 flow. Second operand 3 states and 853 transitions. [2022-12-13 11:35:02,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 203 flow [2022-12-13 11:35:02,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:35:02,788 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 126 flow [2022-12-13 11:35:02,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-12-13 11:35:02,789 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2022-12-13 11:35:02,789 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 126 flow [2022-12-13 11:35:02,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:02,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:02,789 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:35:02,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 11:35:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:02,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1290800883, now seen corresponding path program 2 times [2022-12-13 11:35:02,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:02,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85303608] [2022-12-13 11:35:02,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:35:02,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:02,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:02,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 11:35:03,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:35:03,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:03,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:35:03,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:03,195 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:35:03,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:35:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:03,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:03,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:03,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85303608] [2022-12-13 11:35:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85303608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:03,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:35:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 11:35:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133865542] [2022-12-13 11:35:03,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:35:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:35:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:35:09,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 656 [2022-12-13 11:35:09,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 270.0) internal successors, (3240), 12 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:09,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:09,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 656 [2022-12-13 11:35:09,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:17,135 INFO L130 PetriNetUnfolder]: 4486/6451 cut-off events. [2022-12-13 11:35:17,135 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-13 11:35:17,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12961 conditions, 6451 events. 4486/6451 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 38786 event pairs, 2179 based on Foata normal form. 6/2010 useless extension candidates. Maximal degree in co-relation 12945. Up to 729 conditions per place. [2022-12-13 11:35:17,152 INFO L137 encePairwiseOnDemand]: 652/656 looper letters, 263 selfloop transitions, 12 changer transitions 0/277 dead transitions. [2022-12-13 11:35:17,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 277 transitions, 1236 flow [2022-12-13 11:35:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:35:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 11:35:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3509 transitions. [2022-12-13 11:35:17,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4457571138211382 [2022-12-13 11:35:17,158 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3509 transitions. [2022-12-13 11:35:17,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3509 transitions. [2022-12-13 11:35:17,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:17,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3509 transitions. [2022-12-13 11:35:17,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 292.4166666666667) internal successors, (3509), 12 states have internal predecessors, (3509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:17,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 656.0) internal successors, (8528), 13 states have internal predecessors, (8528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:17,168 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 656.0) internal successors, (8528), 13 states have internal predecessors, (8528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:17,168 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 126 flow. Second operand 12 states and 3509 transitions. [2022-12-13 11:35:17,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 277 transitions, 1236 flow [2022-12-13 11:35:17,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 277 transitions, 1235 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:35:17,171 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 223 flow [2022-12-13 11:35:17,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=223, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2022-12-13 11:35:17,171 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2022-12-13 11:35:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 223 flow [2022-12-13 11:35:17,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 270.0) internal successors, (3240), 12 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:17,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:17,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:35:17,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 11:35:17,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:17,372 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1289695838, now seen corresponding path program 1 times [2022-12-13 11:35:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:17,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783624891] [2022-12-13 11:35:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:17,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:17,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 11:35:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:17,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:35:17,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:17,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:17,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-13 11:35:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:17,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783624891] [2022-12-13 11:35:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783624891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:17,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:35:17,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 11:35:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978250695] [2022-12-13 11:35:17,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:17,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:35:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:35:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:35:20,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 656 [2022-12-13 11:35:20,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 223 flow. Second operand has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:20,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:20,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 656 [2022-12-13 11:35:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:23,426 INFO L130 PetriNetUnfolder]: 5933/8879 cut-off events. [2022-12-13 11:35:23,426 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 11:35:23,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 8879 events. 5933/8879 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 61090 event pairs, 1332 based on Foata normal form. 0/2821 useless extension candidates. Maximal degree in co-relation 17867. Up to 5500 conditions per place. [2022-12-13 11:35:23,450 INFO L137 encePairwiseOnDemand]: 651/656 looper letters, 89 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2022-12-13 11:35:23,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 542 flow [2022-12-13 11:35:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:35:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:35:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1945 transitions. [2022-12-13 11:35:23,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42356271777003485 [2022-12-13 11:35:23,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1945 transitions. [2022-12-13 11:35:23,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1945 transitions. [2022-12-13 11:35:23,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:23,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1945 transitions. [2022-12-13 11:35:23,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.85714285714283) internal successors, (1945), 7 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:23,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 656.0) internal successors, (5248), 8 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:23,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 656.0) internal successors, (5248), 8 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:23,459 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 223 flow. Second operand 7 states and 1945 transitions. [2022-12-13 11:35:23,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 542 flow [2022-12-13 11:35:23,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 517 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 11:35:23,461 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 243 flow [2022-12-13 11:35:23,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2022-12-13 11:35:23,461 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2022-12-13 11:35:23,461 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 243 flow [2022-12-13 11:35:23,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.25) internal successors, (2130), 8 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:23,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:23,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:35:23,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 11:35:23,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:23,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1289695839, now seen corresponding path program 1 times [2022-12-13 11:35:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:23,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786507839] [2022-12-13 11:35:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:23,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:23,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:23,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 11:35:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:23,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:35:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:23,767 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 11:35:23,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 11:35:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:35:23,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:35:23,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:23,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786507839] [2022-12-13 11:35:23,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786507839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:23,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:23,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:35:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501079231] [2022-12-13 11:35:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:23,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:35:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:35:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:35:23,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 656 [2022-12-13 11:35:23,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:23,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:23,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 656 [2022-12-13 11:35:23,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:25,283 INFO L130 PetriNetUnfolder]: 3071/4739 cut-off events. [2022-12-13 11:35:25,283 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2022-12-13 11:35:25,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 4739 events. 3071/4739 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 30698 event pairs, 1728 based on Foata normal form. 0/2462 useless extension candidates. Maximal degree in co-relation 10688. Up to 4690 conditions per place. [2022-12-13 11:35:25,296 INFO L137 encePairwiseOnDemand]: 648/656 looper letters, 36 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2022-12-13 11:35:25,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 44 transitions, 315 flow [2022-12-13 11:35:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:35:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:35:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1036 transitions. [2022-12-13 11:35:25,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3948170731707317 [2022-12-13 11:35:25,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1036 transitions. [2022-12-13 11:35:25,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1036 transitions. [2022-12-13 11:35:25,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:25,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1036 transitions. [2022-12-13 11:35:25,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:25,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:25,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:25,302 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 243 flow. Second operand 4 states and 1036 transitions. [2022-12-13 11:35:25,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 44 transitions, 315 flow [2022-12-13 11:35:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 44 transitions, 299 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 11:35:25,303 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 227 flow [2022-12-13 11:35:25,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2022-12-13 11:35:25,304 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2022-12-13 11:35:25,304 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 227 flow [2022-12-13 11:35:25,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.25) internal successors, (1009), 4 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:25,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:25,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:25,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 11:35:25,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:25,505 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1325863776, now seen corresponding path program 1 times [2022-12-13 11:35:25,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:25,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132490923] [2022-12-13 11:35:25,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:25,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:25,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:25,512 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:25,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 11:35:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:25,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 11:35:25,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:25,661 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:35:25,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:35:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:35:25,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:35:26,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:26,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132490923] [2022-12-13 11:35:26,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132490923] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:26,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:35:26,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 11:35:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247734165] [2022-12-13 11:35:26,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:26,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:35:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:35:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:35:31,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 656 [2022-12-13 11:35:31,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 265.5) internal successors, (2124), 8 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:31,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:31,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 656 [2022-12-13 11:35:31,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:36,131 INFO L130 PetriNetUnfolder]: 2155/3421 cut-off events. [2022-12-13 11:35:36,131 INFO L131 PetriNetUnfolder]: For 943/943 co-relation queries the response was YES. [2022-12-13 11:35:36,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 3421 events. 2155/3421 cut-off events. For 943/943 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 21216 event pairs, 1237 based on Foata normal form. 21/1938 useless extension candidates. Maximal degree in co-relation 7732. Up to 3055 conditions per place. [2022-12-13 11:35:36,140 INFO L137 encePairwiseOnDemand]: 642/656 looper letters, 56 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2022-12-13 11:35:36,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 426 flow [2022-12-13 11:35:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:35:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:35:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2453 transitions. [2022-12-13 11:35:36,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154810298102981 [2022-12-13 11:35:36,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2453 transitions. [2022-12-13 11:35:36,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2453 transitions. [2022-12-13 11:35:36,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:36,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2453 transitions. [2022-12-13 11:35:36,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 272.55555555555554) internal successors, (2453), 9 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:36,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 656.0) internal successors, (6560), 10 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:36,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 656.0) internal successors, (6560), 10 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:36,158 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 227 flow. Second operand 9 states and 2453 transitions. [2022-12-13 11:35:36,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 426 flow [2022-12-13 11:35:36,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:35:36,161 INFO L231 Difference]: Finished difference. Result has 73 places, 44 transitions, 285 flow [2022-12-13 11:35:36,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=73, PETRI_TRANSITIONS=44} [2022-12-13 11:35:36,162 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2022-12-13 11:35:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 44 transitions, 285 flow [2022-12-13 11:35:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 265.5) internal successors, (2124), 8 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:36,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:36,162 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:36,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 11:35:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:36,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash -455472463, now seen corresponding path program 2 times [2022-12-13 11:35:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990527274] [2022-12-13 11:35:36,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:35:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:36,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:36,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 11:35:36,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:35:36,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:36,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:35:36,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:36,531 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:35:36,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:35:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:35:36,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:35:36,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:36,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990527274] [2022-12-13 11:35:36,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990527274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:36,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:36,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:35:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934864716] [2022-12-13 11:35:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:35:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:35:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:35:37,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 656 [2022-12-13 11:35:37,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 44 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:37,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:37,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 656 [2022-12-13 11:35:37,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:37,902 INFO L130 PetriNetUnfolder]: 533/995 cut-off events. [2022-12-13 11:35:37,902 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2022-12-13 11:35:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 995 events. 533/995 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5526 event pairs, 279 based on Foata normal form. 162/941 useless extension candidates. Maximal degree in co-relation 2273. Up to 946 conditions per place. [2022-12-13 11:35:37,906 INFO L137 encePairwiseOnDemand]: 644/656 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-12-13 11:35:37,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 34 transitions, 285 flow [2022-12-13 11:35:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:35:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:35:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1106 transitions. [2022-12-13 11:35:37,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4214939024390244 [2022-12-13 11:35:37,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1106 transitions. [2022-12-13 11:35:37,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1106 transitions. [2022-12-13 11:35:37,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:37,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1106 transitions. [2022-12-13 11:35:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 276.5) internal successors, (1106), 4 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:37,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:37,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 656.0) internal successors, (3280), 5 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:37,919 INFO L175 Difference]: Start difference. First operand has 73 places, 44 transitions, 285 flow. Second operand 4 states and 1106 transitions. [2022-12-13 11:35:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 34 transitions, 285 flow [2022-12-13 11:35:37,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 246 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-12-13 11:35:37,922 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 194 flow [2022-12-13 11:35:37,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=182, 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=194, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-12-13 11:35:37,923 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2022-12-13 11:35:37,923 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 194 flow [2022-12-13 11:35:37,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 271.5) internal successors, (1086), 4 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:37,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:37,924 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 11:35:37,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 11:35:38,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:38,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:35:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1821125293, now seen corresponding path program 3 times [2022-12-13 11:35:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:35:38,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472612207] [2022-12-13 11:35:38,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:35:38,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:35:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:35:38,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:35:38,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 11:35:38,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 11:35:38,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:38,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 11:35:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:38,336 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:35:38,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:35:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:38,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:41,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:35:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472612207] [2022-12-13 11:35:41,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472612207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:41,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:35:41,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 11:35:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223303743] [2022-12-13 11:35:41,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:41,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:35:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:35:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:35:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:36:07,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 656 [2022-12-13 11:36:07,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 194 flow. Second operand has 24 states, 24 states have (on average 270.0) internal successors, (6480), 24 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:07,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:07,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 656 [2022-12-13 11:36:07,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:25,617 INFO L130 PetriNetUnfolder]: 1201/2275 cut-off events. [2022-12-13 11:36:25,617 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2022-12-13 11:36:25,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 2275 events. 1201/2275 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13460 event pairs, 631 based on Foata normal form. 12/1863 useless extension candidates. Maximal degree in co-relation 5019. Up to 504 conditions per place. [2022-12-13 11:36:25,622 INFO L137 encePairwiseOnDemand]: 652/656 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2022-12-13 11:36:25,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1810 flow [2022-12-13 11:36:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:36:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 11:36:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6767 transitions. [2022-12-13 11:36:25,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4298145325203252 [2022-12-13 11:36:25,630 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6767 transitions. [2022-12-13 11:36:25,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6767 transitions. [2022-12-13 11:36:25,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:25,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6767 transitions. [2022-12-13 11:36:25,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 281.9583333333333) internal successors, (6767), 24 states have internal predecessors, (6767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:25,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 656.0) internal successors, (16400), 25 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:25,647 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 656.0) internal successors, (16400), 25 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:25,647 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 194 flow. Second operand 24 states and 6767 transitions. [2022-12-13 11:36:25,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1810 flow [2022-12-13 11:36:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:36:25,651 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 376 flow [2022-12-13 11:36:25,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=187, 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=376, PETRI_PLACES=89, PETRI_TRANSITIONS=47} [2022-12-13 11:36:25,652 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2022-12-13 11:36:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 376 flow [2022-12-13 11:36:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 270.0) internal successors, (6480), 24 states have internal predecessors, (6480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:25,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:25,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:25,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-13 11:36:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:25,854 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:25,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2106959134, now seen corresponding path program 1 times [2022-12-13 11:36:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391059676] [2022-12-13 11:36:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:25,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:25,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 11:36:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:26,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:26,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:26,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:26,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391059676] [2022-12-13 11:36:26,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391059676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:26,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:26,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777662486] [2022-12-13 11:36:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:26,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:26,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 656 [2022-12-13 11:36:26,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:26,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:26,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 656 [2022-12-13 11:36:26,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:27,164 INFO L130 PetriNetUnfolder]: 1493/2798 cut-off events. [2022-12-13 11:36:27,165 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2022-12-13 11:36:27,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 2798 events. 1493/2798 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 15538 event pairs, 504 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 6293. Up to 1560 conditions per place. [2022-12-13 11:36:27,172 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2022-12-13 11:36:27,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 68 transitions, 559 flow [2022-12-13 11:36:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1331 transitions. [2022-12-13 11:36:27,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4057926829268293 [2022-12-13 11:36:27,175 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1331 transitions. [2022-12-13 11:36:27,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1331 transitions. [2022-12-13 11:36:27,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:27,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1331 transitions. [2022-12-13 11:36:27,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 266.2) internal successors, (1331), 5 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:27,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:27,178 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:27,178 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 376 flow. Second operand 5 states and 1331 transitions. [2022-12-13 11:36:27,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 68 transitions, 559 flow [2022-12-13 11:36:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 511 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-12-13 11:36:27,182 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 363 flow [2022-12-13 11:36:27,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2022-12-13 11:36:27,182 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2022-12-13 11:36:27,183 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 363 flow [2022-12-13 11:36:27,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:27,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:27,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:27,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 11:36:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:27,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash -776474838, now seen corresponding path program 2 times [2022-12-13 11:36:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:27,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461500852] [2022-12-13 11:36:27,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:36:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:27,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:27,389 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:27,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 11:36:27,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:36:27,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:27,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:27,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:27,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:27,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:27,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461500852] [2022-12-13 11:36:27,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461500852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:27,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:27,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519680527] [2022-12-13 11:36:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:27,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 656 [2022-12-13 11:36:27,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:27,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:27,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 656 [2022-12-13 11:36:27,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:28,927 INFO L130 PetriNetUnfolder]: 2203/4127 cut-off events. [2022-12-13 11:36:28,927 INFO L131 PetriNetUnfolder]: For 3276/3276 co-relation queries the response was YES. [2022-12-13 11:36:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12293 conditions, 4127 events. 2203/4127 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 25229 event pairs, 840 based on Foata normal form. 40/3607 useless extension candidates. Maximal degree in co-relation 12254. Up to 2608 conditions per place. [2022-12-13 11:36:28,940 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 67 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2022-12-13 11:36:28,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 622 flow [2022-12-13 11:36:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1342 transitions. [2022-12-13 11:36:28,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4091463414634146 [2022-12-13 11:36:28,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1342 transitions. [2022-12-13 11:36:28,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1342 transitions. [2022-12-13 11:36:28,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:28,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1342 transitions. [2022-12-13 11:36:28,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.4) internal successors, (1342), 5 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:28,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:28,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:28,946 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 363 flow. Second operand 5 states and 1342 transitions. [2022-12-13 11:36:28,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 622 flow [2022-12-13 11:36:28,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 593 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 11:36:28,959 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 414 flow [2022-12-13 11:36:28,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=92, PETRI_TRANSITIONS=55} [2022-12-13 11:36:28,959 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2022-12-13 11:36:28,959 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 414 flow [2022-12-13 11:36:28,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:28,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:28,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:28,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 11:36:29,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:29,161 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -616500458, now seen corresponding path program 3 times [2022-12-13 11:36:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:29,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634428846] [2022-12-13 11:36:29,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:36:29,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:29,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:29,166 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:29,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 11:36:29,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 11:36:29,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:29,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:29,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:29,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:29,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634428846] [2022-12-13 11:36:29,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634428846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:29,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:29,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424707285] [2022-12-13 11:36:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:29,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 656 [2022-12-13 11:36:29,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 55 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:29,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:29,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 656 [2022-12-13 11:36:29,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:31,192 INFO L130 PetriNetUnfolder]: 2403/4447 cut-off events. [2022-12-13 11:36:31,193 INFO L131 PetriNetUnfolder]: For 6951/6951 co-relation queries the response was YES. [2022-12-13 11:36:31,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 4447 events. 2403/4447 cut-off events. For 6951/6951 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 27181 event pairs, 880 based on Foata normal form. 80/4247 useless extension candidates. Maximal degree in co-relation 15894. Up to 2368 conditions per place. [2022-12-13 11:36:31,208 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2022-12-13 11:36:31,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 679 flow [2022-12-13 11:36:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1327 transitions. [2022-12-13 11:36:31,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40457317073170734 [2022-12-13 11:36:31,210 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1327 transitions. [2022-12-13 11:36:31,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1327 transitions. [2022-12-13 11:36:31,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:31,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1327 transitions. [2022-12-13 11:36:31,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.4) internal successors, (1327), 5 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:31,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:31,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:31,213 INFO L175 Difference]: Start difference. First operand has 92 places, 55 transitions, 414 flow. Second operand 5 states and 1327 transitions. [2022-12-13 11:36:31,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 679 flow [2022-12-13 11:36:31,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 655 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-13 11:36:31,230 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 510 flow [2022-12-13 11:36:31,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2022-12-13 11:36:31,230 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2022-12-13 11:36:31,230 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 510 flow [2022-12-13 11:36:31,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:31,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:31,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:31,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 11:36:31,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:31,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash 578370254, now seen corresponding path program 4 times [2022-12-13 11:36:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406659644] [2022-12-13 11:36:31,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:36:31,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:31,437 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:31,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 11:36:31,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:36:31,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:31,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:31,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:31,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:31,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406659644] [2022-12-13 11:36:31,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406659644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:31,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:31,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:31,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632049928] [2022-12-13 11:36:31,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:31,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:31,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 656 [2022-12-13 11:36:31,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:31,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:31,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 656 [2022-12-13 11:36:31,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:33,192 INFO L130 PetriNetUnfolder]: 2323/4367 cut-off events. [2022-12-13 11:36:33,192 INFO L131 PetriNetUnfolder]: For 11877/11877 co-relation queries the response was YES. [2022-12-13 11:36:33,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17139 conditions, 4367 events. 2323/4367 cut-off events. For 11877/11877 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26826 event pairs, 1000 based on Foata normal form. 80/4167 useless extension candidates. Maximal degree in co-relation 17094. Up to 3488 conditions per place. [2022-12-13 11:36:33,208 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2022-12-13 11:36:33,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 755 flow [2022-12-13 11:36:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1321 transitions. [2022-12-13 11:36:33,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4027439024390244 [2022-12-13 11:36:33,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1321 transitions. [2022-12-13 11:36:33,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1321 transitions. [2022-12-13 11:36:33,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:33,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1321 transitions. [2022-12-13 11:36:33,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 264.2) internal successors, (1321), 5 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:33,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:33,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:33,214 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 510 flow. Second operand 5 states and 1321 transitions. [2022-12-13 11:36:33,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 755 flow [2022-12-13 11:36:33,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 78 transitions, 736 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:36:33,244 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 614 flow [2022-12-13 11:36:33,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2022-12-13 11:36:33,245 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2022-12-13 11:36:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 614 flow [2022-12-13 11:36:33,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:33,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:33,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:33,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 11:36:33,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:33,446 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -862826404, now seen corresponding path program 5 times [2022-12-13 11:36:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099186973] [2022-12-13 11:36:33,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:36:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:33,452 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 11:36:33,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:36:33,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:33,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:33,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:33,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:33,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099186973] [2022-12-13 11:36:33,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099186973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:33,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:33,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:33,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326130467] [2022-12-13 11:36:33,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:33,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 656 [2022-12-13 11:36:33,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:33,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:33,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 656 [2022-12-13 11:36:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:35,188 INFO L130 PetriNetUnfolder]: 2343/4427 cut-off events. [2022-12-13 11:36:35,188 INFO L131 PetriNetUnfolder]: For 15411/15411 co-relation queries the response was YES. [2022-12-13 11:36:35,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19381 conditions, 4427 events. 2343/4427 cut-off events. For 15411/15411 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 27576 event pairs, 760 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 19334. Up to 2408 conditions per place. [2022-12-13 11:36:35,205 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 65 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2022-12-13 11:36:35,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 84 transitions, 836 flow [2022-12-13 11:36:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1345 transitions. [2022-12-13 11:36:35,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4100609756097561 [2022-12-13 11:36:35,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1345 transitions. [2022-12-13 11:36:35,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1345 transitions. [2022-12-13 11:36:35,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:35,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1345 transitions. [2022-12-13 11:36:35,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:35,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:35,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:35,212 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 614 flow. Second operand 5 states and 1345 transitions. [2022-12-13 11:36:35,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 84 transitions, 836 flow [2022-12-13 11:36:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 84 transitions, 780 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 11:36:35,283 INFO L231 Difference]: Finished difference. Result has 106 places, 71 transitions, 621 flow [2022-12-13 11:36:35,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=621, PETRI_PLACES=106, PETRI_TRANSITIONS=71} [2022-12-13 11:36:35,284 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2022-12-13 11:36:35,284 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 71 transitions, 621 flow [2022-12-13 11:36:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:35,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:35,284 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:35,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 11:36:35,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:35,485 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1572911538, now seen corresponding path program 6 times [2022-12-13 11:36:35,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:35,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751609592] [2022-12-13 11:36:35,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:36:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:35,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:35,490 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:35,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 11:36:35,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 11:36:35,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:35,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:36:35,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:35,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:35,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751609592] [2022-12-13 11:36:35,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751609592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:35,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:35,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:36:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378244852] [2022-12-13 11:36:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:35,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:36:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:36:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:35,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 656 [2022-12-13 11:36:35,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 71 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:35,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:35,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 656 [2022-12-13 11:36:35,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:37,283 INFO L130 PetriNetUnfolder]: 2323/4287 cut-off events. [2022-12-13 11:36:37,283 INFO L131 PetriNetUnfolder]: For 15459/15459 co-relation queries the response was YES. [2022-12-13 11:36:37,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18102 conditions, 4287 events. 2323/4287 cut-off events. For 15459/15459 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 25510 event pairs, 980 based on Foata normal form. 40/4047 useless extension candidates. Maximal degree in co-relation 18054. Up to 3348 conditions per place. [2022-12-13 11:36:37,300 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 65 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2022-12-13 11:36:37,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 82 transitions, 833 flow [2022-12-13 11:36:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:36:37,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:36:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1341 transitions. [2022-12-13 11:36:37,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4088414634146341 [2022-12-13 11:36:37,302 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1341 transitions. [2022-12-13 11:36:37,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1341 transitions. [2022-12-13 11:36:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:37,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1341 transitions. [2022-12-13 11:36:37,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.2) internal successors, (1341), 5 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:37,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:37,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 656.0) internal successors, (3936), 6 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:37,305 INFO L175 Difference]: Start difference. First operand has 106 places, 71 transitions, 621 flow. Second operand 5 states and 1341 transitions. [2022-12-13 11:36:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 82 transitions, 833 flow [2022-12-13 11:36:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 82 transitions, 783 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 11:36:37,353 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 638 flow [2022-12-13 11:36:37,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2022-12-13 11:36:37,354 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2022-12-13 11:36:37,354 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 638 flow [2022-12-13 11:36:37,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:37,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:37,354 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:37,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 11:36:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:37,555 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1306374350, now seen corresponding path program 1 times [2022-12-13 11:36:37,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252346774] [2022-12-13 11:36:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:37,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:37,560 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:37,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 11:36:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:36:37,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:37,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:36:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:37,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252346774] [2022-12-13 11:36:37,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252346774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:36:37,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:36:37,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:36:37,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558274673] [2022-12-13 11:36:37,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:36:37,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:36:37,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:37,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:36:37,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:36:38,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 656 [2022-12-13 11:36:38,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 260.3) internal successors, (2603), 10 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:38,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:38,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 656 [2022-12-13 11:36:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:42,657 INFO L130 PetriNetUnfolder]: 5263/9907 cut-off events. [2022-12-13 11:36:42,658 INFO L131 PetriNetUnfolder]: For 28591/28591 co-relation queries the response was YES. [2022-12-13 11:36:42,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38223 conditions, 9907 events. 5263/9907 cut-off events. For 28591/28591 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 71804 event pairs, 720 based on Foata normal form. 240/9507 useless extension candidates. Maximal degree in co-relation 38174. Up to 3121 conditions per place. [2022-12-13 11:36:42,698 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 143 selfloop transitions, 48 changer transitions 0/191 dead transitions. [2022-12-13 11:36:42,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 191 transitions, 1561 flow [2022-12-13 11:36:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 11:36:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 11:36:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5045 transitions. [2022-12-13 11:36:42,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4047657252888318 [2022-12-13 11:36:42,703 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5045 transitions. [2022-12-13 11:36:42,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5045 transitions. [2022-12-13 11:36:42,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:42,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5045 transitions. [2022-12-13 11:36:42,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 265.5263157894737) internal successors, (5045), 19 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:42,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 656.0) internal successors, (13120), 20 states have internal predecessors, (13120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:42,716 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 656.0) internal successors, (13120), 20 states have internal predecessors, (13120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:42,716 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 638 flow. Second operand 19 states and 5045 transitions. [2022-12-13 11:36:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 191 transitions, 1561 flow [2022-12-13 11:36:42,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 191 transitions, 1480 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 11:36:42,843 INFO L231 Difference]: Finished difference. Result has 135 places, 102 transitions, 979 flow [2022-12-13 11:36:42,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=979, PETRI_PLACES=135, PETRI_TRANSITIONS=102} [2022-12-13 11:36:42,843 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2022-12-13 11:36:42,843 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 102 transitions, 979 flow [2022-12-13 11:36:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.3) internal successors, (2603), 10 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:42,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:42,844 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:42,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 11:36:43,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:43,045 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash 954288050, now seen corresponding path program 2 times [2022-12-13 11:36:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:43,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144904379] [2022-12-13 11:36:43,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:36:43,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:43,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:43,050 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:43,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 11:36:43,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:36:43,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:43,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:36:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:43,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:36:43,280 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 64 treesize of output 62 [2022-12-13 11:36:43,284 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 62 treesize of output 60 [2022-12-13 11:36:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:43,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144904379] [2022-12-13 11:36:43,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144904379] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:36:43,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:36:43,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:36:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772261775] [2022-12-13 11:36:43,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:36:43,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:36:43,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:36:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:36:43,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 656 [2022-12-13 11:36:43,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 102 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 257.1) internal successors, (2571), 10 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:43,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:43,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 656 [2022-12-13 11:36:43,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:49,883 INFO L130 PetriNetUnfolder]: 7283/14087 cut-off events. [2022-12-13 11:36:49,883 INFO L131 PetriNetUnfolder]: For 73151/73151 co-relation queries the response was YES. [2022-12-13 11:36:49,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67595 conditions, 14087 events. 7283/14087 cut-off events. For 73151/73151 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 111415 event pairs, 960 based on Foata normal form. 320/13407 useless extension candidates. Maximal degree in co-relation 67534. Up to 4801 conditions per place. [2022-12-13 11:36:50,019 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 152 selfloop transitions, 73 changer transitions 0/225 dead transitions. [2022-12-13 11:36:50,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 225 transitions, 2149 flow [2022-12-13 11:36:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 11:36:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 11:36:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4471 transitions. [2022-12-13 11:36:50,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4009146341463415 [2022-12-13 11:36:50,023 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4471 transitions. [2022-12-13 11:36:50,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4471 transitions. [2022-12-13 11:36:50,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:50,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4471 transitions. [2022-12-13 11:36:50,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 263.0) internal successors, (4471), 17 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:50,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 656.0) internal successors, (11808), 18 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:50,032 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 656.0) internal successors, (11808), 18 states have internal predecessors, (11808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:50,033 INFO L175 Difference]: Start difference. First operand has 135 places, 102 transitions, 979 flow. Second operand 17 states and 4471 transitions. [2022-12-13 11:36:50,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 225 transitions, 2149 flow [2022-12-13 11:36:50,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 225 transitions, 1971 flow, removed 74 selfloop flow, removed 3 redundant places. [2022-12-13 11:36:50,928 INFO L231 Difference]: Finished difference. Result has 157 places, 138 transitions, 1426 flow [2022-12-13 11:36:50,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1426, PETRI_PLACES=157, PETRI_TRANSITIONS=138} [2022-12-13 11:36:50,929 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2022-12-13 11:36:50,929 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 138 transitions, 1426 flow [2022-12-13 11:36:50,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 257.1) internal successors, (2571), 10 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:50,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:50,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:50,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-13 11:36:51,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:51,131 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:36:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1056998556, now seen corresponding path program 3 times [2022-12-13 11:36:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:36:51,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650689388] [2022-12-13 11:36:51,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:36:51,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:36:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:36:51,136 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:36:51,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 11:36:51,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:36:51,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:36:51,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:36:51,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:51,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:36:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:51,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:36:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650689388] [2022-12-13 11:36:51,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650689388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:36:51,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:36:51,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:36:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495075261] [2022-12-13 11:36:51,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:36:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:36:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:36:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:36:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:36:52,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 656 [2022-12-13 11:36:52,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 138 transitions, 1426 flow. Second operand has 10 states, 10 states have (on average 259.3) internal successors, (2593), 10 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:52,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:52,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 656 [2022-12-13 11:36:52,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:57,646 INFO L130 PetriNetUnfolder]: 6863/12827 cut-off events. [2022-12-13 11:36:57,646 INFO L131 PetriNetUnfolder]: For 115571/115571 co-relation queries the response was YES. [2022-12-13 11:36:57,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70725 conditions, 12827 events. 6863/12827 cut-off events. For 115571/115571 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 95438 event pairs, 960 based on Foata normal form. 560/12747 useless extension candidates. Maximal degree in co-relation 70654. Up to 4081 conditions per place. [2022-12-13 11:36:57,738 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 137 selfloop transitions, 84 changer transitions 0/221 dead transitions. [2022-12-13 11:36:57,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 221 transitions, 2341 flow [2022-12-13 11:36:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:36:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 11:36:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4239 transitions. [2022-12-13 11:36:57,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40386814024390244 [2022-12-13 11:36:57,745 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4239 transitions. [2022-12-13 11:36:57,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4239 transitions. [2022-12-13 11:36:57,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:57,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4239 transitions. [2022-12-13 11:36:57,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 264.9375) internal successors, (4239), 16 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:57,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:57,758 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:57,758 INFO L175 Difference]: Start difference. First operand has 157 places, 138 transitions, 1426 flow. Second operand 16 states and 4239 transitions. [2022-12-13 11:36:57,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 221 transitions, 2341 flow [2022-12-13 11:36:59,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 221 transitions, 2147 flow, removed 71 selfloop flow, removed 4 redundant places. [2022-12-13 11:36:59,878 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1568 flow [2022-12-13 11:36:59,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1568, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2022-12-13 11:36:59,878 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2022-12-13 11:36:59,878 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1568 flow [2022-12-13 11:36:59,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 259.3) internal successors, (2593), 10 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:59,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:59,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:59,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-13 11:37:00,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:00,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:37:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash 52782242, now seen corresponding path program 4 times [2022-12-13 11:37:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:37:00,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033987109] [2022-12-13 11:37:00,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:37:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:37:00,085 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:37:00,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-13 11:37:00,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:37:00,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:00,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:00,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:00,298 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 64 treesize of output 62 [2022-12-13 11:37:00,302 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 62 treesize of output 60 [2022-12-13 11:37:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:00,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:37:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033987109] [2022-12-13 11:37:00,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033987109] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:00,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:37:00,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:37:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068944346] [2022-12-13 11:37:00,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:00,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:37:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:37:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:37:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:37:01,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 656 [2022-12-13 11:37:01,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1568 flow. Second operand has 10 states, 10 states have (on average 256.1) internal successors, (2561), 10 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:01,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:01,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 656 [2022-12-13 11:37:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:08,321 INFO L130 PetriNetUnfolder]: 7583/14347 cut-off events. [2022-12-13 11:37:08,321 INFO L131 PetriNetUnfolder]: For 106791/106791 co-relation queries the response was YES. [2022-12-13 11:37:08,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80488 conditions, 14347 events. 7583/14347 cut-off events. For 106791/106791 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 110717 event pairs, 2080 based on Foata normal form. 280/13747 useless extension candidates. Maximal degree in co-relation 80414. Up to 7968 conditions per place. [2022-12-13 11:37:08,411 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 151 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2022-12-13 11:37:08,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 210 transitions, 2345 flow [2022-12-13 11:37:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:37:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:37:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3647 transitions. [2022-12-13 11:37:08,415 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39710365853658536 [2022-12-13 11:37:08,415 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3647 transitions. [2022-12-13 11:37:08,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3647 transitions. [2022-12-13 11:37:08,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:08,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3647 transitions. [2022-12-13 11:37:08,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 260.5) internal successors, (3647), 14 states have internal predecessors, (3647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:08,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 656.0) internal successors, (9840), 15 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:08,426 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 656.0) internal successors, (9840), 15 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:08,426 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1568 flow. Second operand 14 states and 3647 transitions. [2022-12-13 11:37:08,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 210 transitions, 2345 flow [2022-12-13 11:37:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 210 transitions, 2150 flow, removed 41 selfloop flow, removed 8 redundant places. [2022-12-13 11:37:10,438 INFO L231 Difference]: Finished difference. Result has 183 places, 164 transitions, 1739 flow [2022-12-13 11:37:10,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1739, PETRI_PLACES=183, PETRI_TRANSITIONS=164} [2022-12-13 11:37:10,439 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 131 predicate places. [2022-12-13 11:37:10,439 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 164 transitions, 1739 flow [2022-12-13 11:37:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 256.1) internal successors, (2561), 10 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:10,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:10,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:10,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-13 11:37:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:10,640 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:37:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -705165720, now seen corresponding path program 1 times [2022-12-13 11:37:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:37:10,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277921314] [2022-12-13 11:37:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:10,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:10,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:37:10,646 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:37:10,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-13 11:37:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:10,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:10,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:11,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:37:11,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277921314] [2022-12-13 11:37:11,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277921314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:11,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:37:11,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:37:11,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220202028] [2022-12-13 11:37:11,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:11,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:37:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:37:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:37:11,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:37:12,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 656 [2022-12-13 11:37:12,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 164 transitions, 1739 flow. Second operand has 10 states, 10 states have (on average 258.3) internal successors, (2583), 10 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:12,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:12,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 656 [2022-12-13 11:37:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:20,479 INFO L130 PetriNetUnfolder]: 8843/16487 cut-off events. [2022-12-13 11:37:20,479 INFO L131 PetriNetUnfolder]: For 112391/112391 co-relation queries the response was YES. [2022-12-13 11:37:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94815 conditions, 16487 events. 8843/16487 cut-off events. For 112391/112391 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 128707 event pairs, 2020 based on Foata normal form. 80/15487 useless extension candidates. Maximal degree in co-relation 94734. Up to 8348 conditions per place. [2022-12-13 11:37:20,595 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 159 selfloop transitions, 88 changer transitions 0/247 dead transitions. [2022-12-13 11:37:20,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 247 transitions, 2778 flow [2022-12-13 11:37:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:37:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 11:37:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4211 transitions. [2022-12-13 11:37:20,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40120045731707316 [2022-12-13 11:37:20,603 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4211 transitions. [2022-12-13 11:37:20,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4211 transitions. [2022-12-13 11:37:20,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:20,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4211 transitions. [2022-12-13 11:37:20,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 263.1875) internal successors, (4211), 16 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:20,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:20,613 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:20,613 INFO L175 Difference]: Start difference. First operand has 183 places, 164 transitions, 1739 flow. Second operand 16 states and 4211 transitions. [2022-12-13 11:37:20,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 247 transitions, 2778 flow [2022-12-13 11:37:22,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 247 transitions, 2688 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-12-13 11:37:22,997 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 2244 flow [2022-12-13 11:37:22,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2244, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2022-12-13 11:37:22,997 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2022-12-13 11:37:22,997 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 2244 flow [2022-12-13 11:37:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.3) internal successors, (2583), 10 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:22,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:22,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:23,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-13 11:37:23,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:23,199 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:37:23,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash 419107878, now seen corresponding path program 2 times [2022-12-13 11:37:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:37:23,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464567090] [2022-12-13 11:37:23,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:37:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:37:23,204 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:37:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-13 11:37:23,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:23,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:23,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:23,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:23,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:23,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:37:23,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464567090] [2022-12-13 11:37:23,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464567090] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:23,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:37:23,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:37:23,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501670403] [2022-12-13 11:37:23,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:23,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:37:23,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:37:23,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:37:23,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:37:24,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 656 [2022-12-13 11:37:24,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 2244 flow. Second operand has 10 states, 10 states have (on average 258.3) internal successors, (2583), 10 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:24,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:24,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 656 [2022-12-13 11:37:24,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:31,751 INFO L130 PetriNetUnfolder]: 9023/16867 cut-off events. [2022-12-13 11:37:31,751 INFO L131 PetriNetUnfolder]: For 118460/118460 co-relation queries the response was YES. [2022-12-13 11:37:31,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101336 conditions, 16867 events. 9023/16867 cut-off events. For 118460/118460 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 132581 event pairs, 2264 based on Foata normal form. 80/15907 useless extension candidates. Maximal degree in co-relation 101254. Up to 8348 conditions per place. [2022-12-13 11:37:31,872 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 172 selfloop transitions, 73 changer transitions 0/245 dead transitions. [2022-12-13 11:37:31,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 245 transitions, 2950 flow [2022-12-13 11:37:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:37:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:37:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3679 transitions. [2022-12-13 11:37:31,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4005879790940767 [2022-12-13 11:37:31,876 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3679 transitions. [2022-12-13 11:37:31,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3679 transitions. [2022-12-13 11:37:31,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:31,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3679 transitions. [2022-12-13 11:37:31,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 262.7857142857143) internal successors, (3679), 14 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:31,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 656.0) internal successors, (9840), 15 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:31,884 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 656.0) internal successors, (9840), 15 states have internal predecessors, (9840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:31,884 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 2244 flow. Second operand 14 states and 3679 transitions. [2022-12-13 11:37:31,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 245 transitions, 2950 flow [2022-12-13 11:37:36,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 245 transitions, 2626 flow, removed 146 selfloop flow, removed 5 redundant places. [2022-12-13 11:37:36,695 INFO L231 Difference]: Finished difference. Result has 207 places, 200 transitions, 2208 flow [2022-12-13 11:37:36,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2208, PETRI_PLACES=207, PETRI_TRANSITIONS=200} [2022-12-13 11:37:36,696 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2022-12-13 11:37:36,696 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 2208 flow [2022-12-13 11:37:36,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.3) internal successors, (2583), 10 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:36,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:36,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:36,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-12-13 11:37:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:36,897 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:37:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -852333394, now seen corresponding path program 5 times [2022-12-13 11:37:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:37:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529070702] [2022-12-13 11:37:36,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:37:36,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:36,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:37:36,899 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:37:36,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-13 11:37:37,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:37:37,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:37,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:37,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:37,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:37,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:37:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529070702] [2022-12-13 11:37:37,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529070702] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:37,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:37:37,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:37:37,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921348856] [2022-12-13 11:37:37,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:37,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:37:37,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:37:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:37:37,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:37:38,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 656 [2022-12-13 11:37:38,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 2208 flow. Second operand has 10 states, 10 states have (on average 257.2) internal successors, (2572), 10 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:38,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:38,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 656 [2022-12-13 11:37:38,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:47,146 INFO L130 PetriNetUnfolder]: 11623/21587 cut-off events. [2022-12-13 11:37:47,146 INFO L131 PetriNetUnfolder]: For 120606/120606 co-relation queries the response was YES. [2022-12-13 11:37:47,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114579 conditions, 21587 events. 11623/21587 cut-off events. For 120606/120606 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 174922 event pairs, 2020 based on Foata normal form. 240/20227 useless extension candidates. Maximal degree in co-relation 114494. Up to 11508 conditions per place. [2022-12-13 11:37:47,314 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 188 selfloop transitions, 120 changer transitions 0/308 dead transitions. [2022-12-13 11:37:47,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 308 transitions, 3692 flow [2022-12-13 11:37:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:37:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 11:37:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4183 transitions. [2022-12-13 11:37:47,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3985327743902439 [2022-12-13 11:37:47,319 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4183 transitions. [2022-12-13 11:37:47,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4183 transitions. [2022-12-13 11:37:47,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:47,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4183 transitions. [2022-12-13 11:37:47,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 261.4375) internal successors, (4183), 16 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,329 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 656.0) internal successors, (11152), 17 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:47,329 INFO L175 Difference]: Start difference. First operand has 207 places, 200 transitions, 2208 flow. Second operand 16 states and 4183 transitions. [2022-12-13 11:37:47,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 308 transitions, 3692 flow [2022-12-13 11:37:50,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 308 transitions, 3637 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 11:37:50,017 INFO L231 Difference]: Finished difference. Result has 223 places, 255 transitions, 3223 flow [2022-12-13 11:37:50,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3223, PETRI_PLACES=223, PETRI_TRANSITIONS=255} [2022-12-13 11:37:50,017 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2022-12-13 11:37:50,017 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 255 transitions, 3223 flow [2022-12-13 11:37:50,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 257.2) internal successors, (2572), 10 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:50,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:50,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:50,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-13 11:37:50,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:50,218 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:37:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1823898062, now seen corresponding path program 6 times [2022-12-13 11:37:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:37:50,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635439524] [2022-12-13 11:37:50,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:37:50,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:37:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:37:50,225 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:37:50,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-12-13 11:37:50,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 11:37:50,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:37:50,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:37:50,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:50,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:50,504 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 64 treesize of output 62 [2022-12-13 11:37:50,508 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 62 treesize of output 60 [2022-12-13 11:37:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:37:50,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:37:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635439524] [2022-12-13 11:37:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635439524] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:50,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:37:50,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 11:37:50,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067404741] [2022-12-13 11:37:50,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:37:50,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:37:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:37:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:37:51,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 656 [2022-12-13 11:37:51,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 255 transitions, 3223 flow. Second operand has 10 states, 10 states have (on average 257.1) internal successors, (2571), 10 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:51,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:51,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 656 [2022-12-13 11:37:51,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:58,937 INFO L130 PetriNetUnfolder]: 11943/22947 cut-off events. [2022-12-13 11:37:58,937 INFO L131 PetriNetUnfolder]: For 157259/157259 co-relation queries the response was YES. [2022-12-13 11:37:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136184 conditions, 22947 events. 11943/22947 cut-off events. For 157259/157259 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 194571 event pairs, 1940 based on Foata normal form. 200/21667 useless extension candidates. Maximal degree in co-relation 136094. Up to 9908 conditions per place. [2022-12-13 11:37:59,146 INFO L137 encePairwiseOnDemand]: 650/656 looper letters, 215 selfloop transitions, 92 changer transitions 0/307 dead transitions. [2022-12-13 11:37:59,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 307 transitions, 4292 flow [2022-12-13 11:37:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:37:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 11:37:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3127 transitions. [2022-12-13 11:37:59,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39723069105691056 [2022-12-13 11:37:59,150 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3127 transitions. [2022-12-13 11:37:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3127 transitions. [2022-12-13 11:37:59,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:59,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3127 transitions. [2022-12-13 11:37:59,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 260.5833333333333) internal successors, (3127), 12 states have internal predecessors, (3127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:59,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 656.0) internal successors, (8528), 13 states have internal predecessors, (8528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:59,157 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 656.0) internal successors, (8528), 13 states have internal predecessors, (8528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:59,157 INFO L175 Difference]: Start difference. First operand has 223 places, 255 transitions, 3223 flow. Second operand 12 states and 3127 transitions. [2022-12-13 11:37:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 307 transitions, 4292 flow [2022-12-13 11:38:05,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 307 transitions, 3937 flow, removed 151 selfloop flow, removed 4 redundant places. [2022-12-13 11:38:05,703 INFO L231 Difference]: Finished difference. Result has 236 places, 262 transitions, 3199 flow [2022-12-13 11:38:05,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=656, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3199, PETRI_PLACES=236, PETRI_TRANSITIONS=262} [2022-12-13 11:38:05,704 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2022-12-13 11:38:05,704 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 262 transitions, 3199 flow [2022-12-13 11:38:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 257.1) internal successors, (2571), 10 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:05,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:05,704 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:05,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-12-13 11:38:05,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:38:05,905 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-12-13 11:38:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash -743631986, now seen corresponding path program 7 times [2022-12-13 11:38:05,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:38:05,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643321008] [2022-12-13 11:38:05,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:38:05,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:38:05,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:38:05,911 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:38:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e50354f6-0ca7-49d3-a2eb-ed7d08d7be3c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-13 11:38:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:06,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:38:06,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:06,157 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:38:06,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:38:06,523 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 552 treesize of output 544 [2022-12-13 11:38:06,532 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 551 treesize of output 541 [2022-12-13 11:38:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:38:07,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:38:07,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:38:07,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:38:07,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:38:07,194 INFO L321 Elim1Store]: treesize reduction 348, result has 6.7 percent of original size [2022-12-13 11:38:07,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 66 case distinctions, treesize of input 287 treesize of output 111 [2022-12-13 11:38:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:07,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:13,457 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 600 DAG size of output: 162 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 11:38:13,458 INFO L321 Elim1Store]: treesize reduction 1680, result has 22.3 percent of original size [2022-12-13 11:38:13,459 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 20 new quantified variables, introduced 190 case distinctions, treesize of input 683 treesize of output 988 [2022-12-13 11:38:13,494 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 499 treesize of output 491