./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:32:45,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:32:45,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:32:45,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:32:45,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:32:45,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:32:45,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:32:45,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:32:45,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:32:45,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:32:45,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:32:45,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:32:45,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:32:45,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:32:45,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:32:45,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:32:45,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:32:45,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:32:45,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:32:45,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:32:45,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:32:45,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:32:45,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:32:45,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:32:45,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:32:45,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:32:45,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:32:45,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:32:45,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:32:45,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:32:45,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:32:45,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:32:45,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:32:45,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:32:45,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:32:45,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:32:45,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:32:45,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:32:45,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:32:45,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:32:45,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:32:45,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:32:45,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:32:45,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:32:45,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:32:45,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:32:45,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:32:45,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:32:45,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:32:45,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:32:45,421 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:32:45,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:32:45,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:32:45,423 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:32:45,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:32:45,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:32:45,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:32:45,424 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:32:45,424 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:32:45,424 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:32:45,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:32:45,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:32:45,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:32:45,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:32:45,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:32:45,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:32:45,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:32:45,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:45,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:32:45,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:32:45,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:32:45,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:32:45,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:32:45,429 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:32:45,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:32:45,429 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-25 17:32:45,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:32:45,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:32:45,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:32:45,817 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:32:45,818 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:32:45,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-25 17:32:48,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:32:49,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:32:49,047 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-25 17:32:49,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/e05a37144/89241d05fafc40359dcad3d99370fa09/FLAGabe2e1cda [2022-11-25 17:32:49,074 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/e05a37144/89241d05fafc40359dcad3d99370fa09 [2022-11-25 17:32:49,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:32:49,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:32:49,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:49,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:32:49,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:32:49,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:49" (1/1) ... [2022-11-25 17:32:49,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c93512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:49, skipping insertion in model container [2022-11-25 17:32:49,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:49" (1/1) ... [2022-11-25 17:32:49,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:32:49,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:49,295 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-25 17:32:49,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:49,317 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 17:32:49,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67dfa0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:49, skipping insertion in model container [2022-11-25 17:32:49,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:49,318 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:32:49,320 INFO L158 Benchmark]: Toolchain (without parser) took 237.08ms. Allocated memory is still 132.1MB. Free memory was 87.7MB in the beginning and 77.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:32:49,321 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:32:49,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.25ms. Allocated memory is still 132.1MB. Free memory was 87.7MB in the beginning and 77.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:32:49,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.25ms. Allocated memory is still 132.1MB. Free memory was 87.7MB in the beginning and 77.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:32:51,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:32:51,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:32:51,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:32:51,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:32:51,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:32:51,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:32:51,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:32:51,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:32:51,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:32:51,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:32:51,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:32:51,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:32:51,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:32:51,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:32:51,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:32:51,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:32:51,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:32:51,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:32:51,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:32:51,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:32:51,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:32:51,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:32:51,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:32:51,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:32:51,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:32:51,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:32:51,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:32:51,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:32:51,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:32:51,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:32:51,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:32:51,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:32:51,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:32:51,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:32:51,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:32:51,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:32:51,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:32:51,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:32:51,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:32:51,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:32:51,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:32:51,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:32:51,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:32:51,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:32:51,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:32:51,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:32:51,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:32:51,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:32:51,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:32:51,925 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:32:51,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:32:51,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:32:51,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:32:51,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:32:51,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:32:51,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:32:51,928 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:32:51,928 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:32:51,928 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:32:51,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:32:51,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:32:51,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:32:51,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:32:51,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:32:51,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:32:51,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:32:51,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:32:51,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:32:51,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:51,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:32:51,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:32:51,931 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:32:51,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:51,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:32:51,932 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:32:51,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:32:51,932 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:32:51,932 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-25 17:32:52,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:32:52,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:32:52,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:32:52,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:32:52,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:32:52,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-25 17:32:55,366 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:32:55,586 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:32:55,587 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-25 17:32:55,594 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/4226c36ed/7c476a983adc433a9b29049407c295b9/FLAGef705e2e9 [2022-11-25 17:32:55,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/data/4226c36ed/7c476a983adc433a9b29049407c295b9 [2022-11-25 17:32:55,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:32:55,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:32:55,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:55,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:32:55,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:32:55,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:55,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8f6eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55, skipping insertion in model container [2022-11-25 17:32:55,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:55,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:32:55,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:55,836 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-25 17:32:55,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:55,859 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:32:55,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:32:55,880 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-25 17:32:55,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:55,888 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:32:55,912 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_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-25 17:32:55,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:32:55,940 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:32:55,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55 WrapperNode [2022-11-25 17:32:55,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:32:55,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:55,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:32:55,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:32:55,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:55,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,023 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 162 [2022-11-25 17:32:56,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:32:56,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:32:56,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:32:56,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:32:56,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:32:56,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:32:56,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:32:56,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:32:56,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (1/1) ... [2022-11-25 17:32:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:32:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:32:56,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:32:56,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:32:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:32:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:32:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:32:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:32:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:32:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:32:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:32:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:32:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:32:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:32:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:32:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:32:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:32:56,223 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:32:56,375 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:32:56,377 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:32:57,074 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:32:57,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:32:57,084 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:32:57,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:57 BoogieIcfgContainer [2022-11-25 17:32:57,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:32:57,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:32:57,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:32:57,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:32:57,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:32:55" (1/3) ... [2022-11-25 17:32:57,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77987f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:57, skipping insertion in model container [2022-11-25 17:32:57,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:32:55" (2/3) ... [2022-11-25 17:32:57,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a77987f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:32:57, skipping insertion in model container [2022-11-25 17:32:57,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:32:57" (3/3) ... [2022-11-25 17:32:57,096 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-11-25 17:32:57,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:32:57,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-25 17:32:57,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:32:57,265 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:32:57,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 237 transitions, 490 flow [2022-11-25 17:32:57,442 INFO L130 PetriNetUnfolder]: 17/235 cut-off events. [2022-11-25 17:32:57,448 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:32:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 235 events. 17/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-11-25 17:32:57,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 237 transitions, 490 flow [2022-11-25 17:32:57,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 230 transitions, 472 flow [2022-11-25 17:32:57,476 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:32:57,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 230 transitions, 472 flow [2022-11-25 17:32:57,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 230 transitions, 472 flow [2022-11-25 17:32:57,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 230 transitions, 472 flow [2022-11-25 17:32:57,599 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2022-11-25 17:32:57,600 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:32:57,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 230 events. 17/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 266 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-11-25 17:32:57,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 6076 [2022-11-25 17:33:42,108 INFO L134 LiptonReduction]: Checked pairs total: 6032 [2022-11-25 17:33:42,108 INFO L136 LiptonReduction]: Total number of compositions: 273 [2022-11-25 17:33:42,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:33:42,130 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;@1d5686af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:33:42,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-25 17:33:42,133 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:33:42,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:33:42,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:42,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:33:42,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 30165, now seen corresponding path program 1 times [2022-11-25 17:33:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:42,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357828167] [2022-11-25 17:33:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:42,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:42,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:42,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:33:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:33:42,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:42,477 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:33:42,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:33:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:42,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:42,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357828167] [2022-11-25 17:33:42,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357828167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:42,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:42,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181371603] [2022-11-25 17:33:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:42,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 510 [2022-11-25 17:33:42,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:42,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:42,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 510 [2022-11-25 17:33:42,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:43,480 INFO L130 PetriNetUnfolder]: 597/843 cut-off events. [2022-11-25 17:33:43,481 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 17:33:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 843 events. 597/843 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3534 event pairs, 286 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 1466. Up to 836 conditions per place. [2022-11-25 17:33:43,494 INFO L137 encePairwiseOnDemand]: 499/510 looper letters, 33 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-11-25 17:33:43,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 156 flow [2022-11-25 17:33:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-11-25 17:33:43,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44052287581699345 [2022-11-25 17:33:43,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-11-25 17:33:43,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-11-25 17:33:43,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:43,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-11-25 17:33:43,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:43,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:43,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:43,552 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 3 states and 674 transitions. [2022-11-25 17:33:43,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 156 flow [2022-11-25 17:33:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:33:43,563 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 92 flow [2022-11-25 17:33:43,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-11-25 17:33:43,572 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2022-11-25 17:33:43,572 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 92 flow [2022-11-25 17:33:43,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:43,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:43,574 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:33:43,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-25 17:33:43,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:43,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash 30164, now seen corresponding path program 1 times [2022-11-25 17:33:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343558917] [2022-11-25 17:33:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:43,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:43,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:33:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:43,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:33:43,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:43,939 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 17:33:43,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 17:33:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:43,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:43,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343558917] [2022-11-25 17:33:43,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343558917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:43,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:43,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250947920] [2022-11-25 17:33:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:43,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:44,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2022-11-25 17:33:44,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:44,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:44,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2022-11-25 17:33:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:44,582 INFO L130 PetriNetUnfolder]: 597/841 cut-off events. [2022-11-25 17:33:44,583 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:33:44,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 841 events. 597/841 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3668 event pairs, 286 based on Foata normal form. 2/201 useless extension candidates. Maximal degree in co-relation 1683. Up to 835 conditions per place. [2022-11-25 17:33:44,588 INFO L137 encePairwiseOnDemand]: 508/510 looper letters, 32 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-11-25 17:33:44,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 156 flow [2022-11-25 17:33:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2022-11-25 17:33:44,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4372549019607843 [2022-11-25 17:33:44,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2022-11-25 17:33:44,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2022-11-25 17:33:44,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:44,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2022-11-25 17:33:44,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:44,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:44,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:44,600 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 92 flow. Second operand 3 states and 669 transitions. [2022-11-25 17:33:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 156 flow [2022-11-25 17:33:44,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:44,601 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 88 flow [2022-11-25 17:33:44,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2022-11-25 17:33:44,603 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2022-11-25 17:33:44,603 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 88 flow [2022-11-25 17:33:44,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:44,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:44,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:33:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:44,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 939736, now seen corresponding path program 1 times [2022-11-25 17:33:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:44,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985391304] [2022-11-25 17:33:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:44,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:44,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:44,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 17:33:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:44,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:33:44,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:45,015 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:33:45,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:33:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:45,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:45,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985391304] [2022-11-25 17:33:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985391304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:33:45,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:33:45,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 17:33:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669554945] [2022-11-25 17:33:45,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:33:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:33:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:33:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:33:46,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2022-11-25 17:33:46,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:46,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:46,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2022-11-25 17:33:46,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:48,018 INFO L130 PetriNetUnfolder]: 1199/1687 cut-off events. [2022-11-25 17:33:48,018 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:33:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 1687 events. 1199/1687 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 8302 event pairs, 572 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 3389. Up to 838 conditions per place. [2022-11-25 17:33:48,029 INFO L137 encePairwiseOnDemand]: 504/510 looper letters, 60 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2022-11-25 17:33:48,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 73 transitions, 334 flow [2022-11-25 17:33:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:33:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:33:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1316 transitions. [2022-11-25 17:33:48,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4300653594771242 [2022-11-25 17:33:48,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1316 transitions. [2022-11-25 17:33:48,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1316 transitions. [2022-11-25 17:33:48,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:48,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1316 transitions. [2022-11-25 17:33:48,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.33333333333334) internal successors, (1316), 6 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:48,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:48,048 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:48,049 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 6 states and 1316 transitions. [2022-11-25 17:33:48,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 73 transitions, 334 flow [2022-11-25 17:33:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 73 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:48,051 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 185 flow [2022-11-25 17:33:48,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-11-25 17:33:48,052 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2022-11-25 17:33:48,053 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 185 flow [2022-11-25 17:33:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:48,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:48,054 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:33:48,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:48,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:48,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 939927, now seen corresponding path program 1 times [2022-11-25 17:33:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:48,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326603252] [2022-11-25 17:33:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:48,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:48,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:48,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 17:33:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:48,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:33:48,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:48,403 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-25 17:33:48,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-25 17:33:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:33:48,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:48,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:48,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326603252] [2022-11-25 17:33:48,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326603252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:48,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:48,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373190482] [2022-11-25 17:33:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:48,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 510 [2022-11-25 17:33:48,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:48,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:48,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 510 [2022-11-25 17:33:48,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:49,172 INFO L130 PetriNetUnfolder]: 903/1299 cut-off events. [2022-11-25 17:33:49,172 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 17:33:49,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1299 events. 903/1299 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 6316 event pairs, 430 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 2636. Up to 1287 conditions per place. [2022-11-25 17:33:49,180 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-11-25 17:33:49,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 235 flow [2022-11-25 17:33:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2022-11-25 17:33:49,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43071895424836604 [2022-11-25 17:33:49,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2022-11-25 17:33:49,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2022-11-25 17:33:49,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:49,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2022-11-25 17:33:49,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:49,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:49,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:49,191 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 185 flow. Second operand 3 states and 659 transitions. [2022-11-25 17:33:49,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 235 flow [2022-11-25 17:33:49,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 225 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:49,194 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 151 flow [2022-11-25 17:33:49,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=151, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-11-25 17:33:49,195 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2022-11-25 17:33:49,195 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 151 flow [2022-11-25 17:33:49,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:49,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:49,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:33:49,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:49,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 939928, now seen corresponding path program 1 times [2022-11-25 17:33:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:49,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816951228] [2022-11-25 17:33:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:49,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:49,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:49,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 17:33:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:33:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:49,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:49,578 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-25 17:33:49,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-25 17:33:49,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-25 17:33:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:33:49,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:49,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816951228] [2022-11-25 17:33:49,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816951228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:49,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:49,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:49,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661919162] [2022-11-25 17:33:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:49,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:49,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2022-11-25 17:33:49,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:49,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:49,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2022-11-25 17:33:49,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:50,404 INFO L130 PetriNetUnfolder]: 607/911 cut-off events. [2022-11-25 17:33:50,404 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 17:33:50,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 911 events. 607/911 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 4346 event pairs, 288 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 1845. Up to 899 conditions per place. [2022-11-25 17:33:50,409 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 33 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 17:33:50,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 195 flow [2022-11-25 17:33:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2022-11-25 17:33:50,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2022-11-25 17:33:50,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2022-11-25 17:33:50,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2022-11-25 17:33:50,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:50,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2022-11-25 17:33:50,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:50,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:50,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:50,420 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 151 flow. Second operand 3 states and 666 transitions. [2022-11-25 17:33:50,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 195 flow [2022-11-25 17:33:50,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:50,422 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 128 flow [2022-11-25 17:33:50,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2022-11-25 17:33:50,423 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2022-11-25 17:33:50,423 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 128 flow [2022-11-25 17:33:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:50,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:50,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:33:50,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:50,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 903289978, now seen corresponding path program 1 times [2022-11-25 17:33:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:50,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811995454] [2022-11-25 17:33:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:50,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:50,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:50,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 17:33:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:50,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:33:50,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:50,784 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-25 17:33:50,785 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 [2022-11-25 17:33:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:33:50,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:50,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:50,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811995454] [2022-11-25 17:33:50,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811995454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:50,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:50,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149851471] [2022-11-25 17:33:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:50,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:50,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:50,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 510 [2022-11-25 17:33:50,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:50,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:50,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 510 [2022-11-25 17:33:50,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:51,392 INFO L130 PetriNetUnfolder]: 561/837 cut-off events. [2022-11-25 17:33:51,393 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 17:33:51,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 837 events. 561/837 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 3927 event pairs, 266 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 1697. Up to 825 conditions per place. [2022-11-25 17:33:51,398 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-25 17:33:51,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 188 flow [2022-11-25 17:33:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2022-11-25 17:33:51,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42810457516339867 [2022-11-25 17:33:51,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2022-11-25 17:33:51,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2022-11-25 17:33:51,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:51,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2022-11-25 17:33:51,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:51,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:51,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:51,408 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 128 flow. Second operand 3 states and 655 transitions. [2022-11-25 17:33:51,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 188 flow [2022-11-25 17:33:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:51,411 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 125 flow [2022-11-25 17:33:51,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 17:33:51,412 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2022-11-25 17:33:51,412 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 125 flow [2022-11-25 17:33:51,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:51,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:51,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:33:51,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:51,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash 903289979, now seen corresponding path program 1 times [2022-11-25 17:33:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:51,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106472086] [2022-11-25 17:33:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:51,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:51,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:51,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 17:33:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:51,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:33:51,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:51,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:33:51,763 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:33:51,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-25 17:33:51,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-25 17:33:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:33:51,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:51,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:51,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106472086] [2022-11-25 17:33:51,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106472086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:51,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:51,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:33:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763992844] [2022-11-25 17:33:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:33:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:33:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:33:52,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2022-11-25 17:33:52,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:52,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:52,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2022-11-25 17:33:52,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:52,447 INFO L130 PetriNetUnfolder]: 515/763 cut-off events. [2022-11-25 17:33:52,447 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 17:33:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1565 conditions, 763 events. 515/763 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 3519 event pairs, 244 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 1549. Up to 751 conditions per place. [2022-11-25 17:33:52,452 INFO L137 encePairwiseOnDemand]: 507/510 looper letters, 29 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-11-25 17:33:52,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 181 flow [2022-11-25 17:33:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:33:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:33:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-11-25 17:33:52,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4326797385620915 [2022-11-25 17:33:52,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-11-25 17:33:52,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-11-25 17:33:52,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:52,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-11-25 17:33:52,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:52,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:52,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:52,461 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 125 flow. Second operand 3 states and 662 transitions. [2022-11-25 17:33:52,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 181 flow [2022-11-25 17:33:52,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:52,463 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 122 flow [2022-11-25 17:33:52,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2022-11-25 17:33:52,464 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2022-11-25 17:33:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 122 flow [2022-11-25 17:33:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:52,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:52,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:33:52,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:52,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:52,677 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2062790342, now seen corresponding path program 1 times [2022-11-25 17:33:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:52,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006723069] [2022-11-25 17:33:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:52,679 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:52,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 17:33:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:52,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:33:52,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:52,801 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 17:33:52,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-25 17:33:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:33:52,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:33:52,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006723069] [2022-11-25 17:33:52,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006723069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:33:52,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:33:52,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:33:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269506203] [2022-11-25 17:33:52,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:33:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:33:52,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:52,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:33:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:33:53,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 510 [2022-11-25 17:33:53,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:53,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:53,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 510 [2022-11-25 17:33:53,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:53,548 INFO L130 PetriNetUnfolder]: 363/551 cut-off events. [2022-11-25 17:33:53,548 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 17:33:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 551 events. 363/551 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2423 event pairs, 170 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 1125. Up to 534 conditions per place. [2022-11-25 17:33:53,555 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 24 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-11-25 17:33:53,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 174 flow [2022-11-25 17:33:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:33:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:33:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 816 transitions. [2022-11-25 17:33:53,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-11-25 17:33:53,559 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 816 transitions. [2022-11-25 17:33:53,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 816 transitions. [2022-11-25 17:33:53,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:53,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 816 transitions. [2022-11-25 17:33:53,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:53,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:53,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:53,565 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 122 flow. Second operand 4 states and 816 transitions. [2022-11-25 17:33:53,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 174 flow [2022-11-25 17:33:53,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:33:53,567 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 125 flow [2022-11-25 17:33:53,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2022-11-25 17:33:53,568 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2022-11-25 17:33:53,568 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 125 flow [2022-11-25 17:33:53,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.25) internal successors, (797), 4 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:53,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:53,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:33:53,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:53,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:53,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2062790343, now seen corresponding path program 1 times [2022-11-25 17:33:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:53,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679752713] [2022-11-25 17:33:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:53,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:53,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:53,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:53,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 17:33:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:53,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:33:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:53,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:54,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-25 17:33:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:54,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:54,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679752713] [2022-11-25 17:33:54,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679752713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:33:54,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:33:54,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 17:33:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340631057] [2022-11-25 17:33:54,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:33:54,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:33:54,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:33:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:33:56,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 510 [2022-11-25 17:33:56,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 125 flow. Second operand has 8 states, 8 states have (on average 205.25) internal successors, (1642), 8 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:56,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:33:56,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 510 [2022-11-25 17:33:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:33:57,565 INFO L130 PetriNetUnfolder]: 465/727 cut-off events. [2022-11-25 17:33:57,566 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-25 17:33:57,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 727 events. 465/727 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 3544 event pairs, 88 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 1487. Up to 463 conditions per place. [2022-11-25 17:33:57,570 INFO L137 encePairwiseOnDemand]: 505/510 looper letters, 53 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2022-11-25 17:33:57,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 332 flow [2022-11-25 17:33:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:33:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:33:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1488 transitions. [2022-11-25 17:33:57,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41680672268907565 [2022-11-25 17:33:57,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1488 transitions. [2022-11-25 17:33:57,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1488 transitions. [2022-11-25 17:33:57,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:33:57,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1488 transitions. [2022-11-25 17:33:57,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.57142857142858) internal successors, (1488), 7 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:57,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 510.0) internal successors, (4080), 8 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:57,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 510.0) internal successors, (4080), 8 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:57,586 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 125 flow. Second operand 7 states and 1488 transitions. [2022-11-25 17:33:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 332 flow [2022-11-25 17:33:57,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:33:57,589 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 163 flow [2022-11-25 17:33:57,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2022-11-25 17:33:57,590 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2022-11-25 17:33:57,590 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 163 flow [2022-11-25 17:33:57,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.25) internal successors, (1642), 8 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:33:57,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:33:57,591 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:33:57,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:57,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:33:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2064507243, now seen corresponding path program 2 times [2022-11-25 17:33:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:57,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131398873] [2022-11-25 17:33:57,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:33:57,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:33:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:57,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:33:57,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 17:33:57,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:33:57,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:33:57,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:33:57,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:58,001 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:33:58,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:33:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:58,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:33:59,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:59,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131398873] [2022-11-25 17:33:59,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131398873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:33:59,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:33:59,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 17:33:59,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868334462] [2022-11-25 17:33:59,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:33:59,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:33:59,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:33:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:34:04,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2022-11-25 17:34:04,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 163 flow. Second operand has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:04,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:04,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2022-11-25 17:34:04,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:10,520 INFO L130 PetriNetUnfolder]: 1928/3092 cut-off events. [2022-11-25 17:34:10,520 INFO L131 PetriNetUnfolder]: For 811/811 co-relation queries the response was YES. [2022-11-25 17:34:10,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 3092 events. 1928/3092 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19041 event pairs, 1107 based on Foata normal form. 6/1801 useless extension candidates. Maximal degree in co-relation 7033. Up to 339 conditions per place. [2022-11-25 17:34:10,539 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 182 selfloop transitions, 12 changer transitions 0/196 dead transitions. [2022-11-25 17:34:10,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 196 transitions, 1062 flow [2022-11-25 17:34:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:34:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:34:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2675 transitions. [2022-11-25 17:34:10,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43709150326797386 [2022-11-25 17:34:10,547 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2675 transitions. [2022-11-25 17:34:10,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2675 transitions. [2022-11-25 17:34:10,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:10,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2675 transitions. [2022-11-25 17:34:10,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.91666666666666) internal successors, (2675), 12 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:10,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 510.0) internal successors, (6630), 13 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:10,564 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 510.0) internal successors, (6630), 13 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:10,564 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 163 flow. Second operand 12 states and 2675 transitions. [2022-11-25 17:34:10,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 196 transitions, 1062 flow [2022-11-25 17:34:10,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 196 transitions, 1048 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-25 17:34:10,569 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 253 flow [2022-11-25 17:34:10,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=253, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2022-11-25 17:34:10,570 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2022-11-25 17:34:10,570 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 253 flow [2022-11-25 17:34:10,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 208.0) internal successors, (2496), 12 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:10,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:10,572 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:34:10,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:10,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:34:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash 478010200, now seen corresponding path program 1 times [2022-11-25 17:34:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21772758] [2022-11-25 17:34:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:10,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:10,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:10,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:34:10,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 17:34:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:34:10,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:34:10,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:11,015 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:34:11,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:34:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:34:11,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:34:12,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21772758] [2022-11-25 17:34:12,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21772758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:34:12,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:34:12,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-25 17:34:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030318877] [2022-11-25 17:34:12,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:34:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:34:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:34:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:34:23,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 510 [2022-11-25 17:34:23,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 204.5) internal successors, (1636), 8 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:23,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:23,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 510 [2022-11-25 17:34:23,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:29,174 INFO L130 PetriNetUnfolder]: 1457/2387 cut-off events. [2022-11-25 17:34:29,175 INFO L131 PetriNetUnfolder]: For 692/692 co-relation queries the response was YES. [2022-11-25 17:34:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5481 conditions, 2387 events. 1457/2387 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 14303 event pairs, 828 based on Foata normal form. 21/1484 useless extension candidates. Maximal degree in co-relation 5453. Up to 2023 conditions per place. [2022-11-25 17:34:29,227 INFO L137 encePairwiseOnDemand]: 500/510 looper letters, 52 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2022-11-25 17:34:29,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 444 flow [2022-11-25 17:34:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:34:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:34:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1892 transitions. [2022-11-25 17:34:29,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4122004357298475 [2022-11-25 17:34:29,251 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1892 transitions. [2022-11-25 17:34:29,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1892 transitions. [2022-11-25 17:34:29,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:29,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1892 transitions. [2022-11-25 17:34:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.22222222222223) internal successors, (1892), 9 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:29,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 510.0) internal successors, (5100), 10 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:29,283 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 510.0) internal successors, (5100), 10 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:29,283 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 253 flow. Second operand 9 states and 1892 transitions. [2022-11-25 17:34:29,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 444 flow [2022-11-25 17:34:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 431 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 17:34:29,290 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 289 flow [2022-11-25 17:34:29,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=289, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2022-11-25 17:34:29,291 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2022-11-25 17:34:29,304 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 289 flow [2022-11-25 17:34:29,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 204.5) internal successors, (1636), 8 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:29,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:29,305 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 17:34:29,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:29,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:29,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:34:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1988983957, now seen corresponding path program 2 times [2022-11-25 17:34:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8242109] [2022-11-25 17:34:29,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:34:29,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:29,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:34:29,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 17:34:29,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:34:29,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:34:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:34:29,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:29,708 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:34:29,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:34:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:34:29,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:34:29,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8242109] [2022-11-25 17:34:29,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8242109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:34:29,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:34:29,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:34:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776509177] [2022-11-25 17:34:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:34:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:34:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:34:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:34:30,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 510 [2022-11-25 17:34:30,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:30,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:30,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 510 [2022-11-25 17:34:30,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:34:30,999 INFO L130 PetriNetUnfolder]: 515/977 cut-off events. [2022-11-25 17:34:31,000 INFO L131 PetriNetUnfolder]: For 960/960 co-relation queries the response was YES. [2022-11-25 17:34:31,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2277 conditions, 977 events. 515/977 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5366 event pairs, 270 based on Foata normal form. 162/959 useless extension candidates. Maximal degree in co-relation 2246. Up to 919 conditions per place. [2022-11-25 17:34:31,017 INFO L137 encePairwiseOnDemand]: 502/510 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2022-11-25 17:34:31,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 34 transitions, 313 flow [2022-11-25 17:34:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:34:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:34:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2022-11-25 17:34:31,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2022-11-25 17:34:31,021 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2022-11-25 17:34:31,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2022-11-25 17:34:31,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:34:31,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2022-11-25 17:34:31,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:31,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:31,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:31,028 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 289 flow. Second operand 4 states and 858 transitions. [2022-11-25 17:34:31,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 34 transitions, 313 flow [2022-11-25 17:34:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 262 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-25 17:34:31,032 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 210 flow [2022-11-25 17:34:31,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-11-25 17:34:31,035 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2022-11-25 17:34:31,035 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 210 flow [2022-11-25 17:34:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:31,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:34:31,036 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-11-25 17:34:31,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:34:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:31,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:34:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash 547825589, now seen corresponding path program 3 times [2022-11-25 17:34:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:34:31,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663183299] [2022-11-25 17:34:31,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:34:31,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:34:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:34:31,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:34:31,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-25 17:34:31,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:34:31,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:34:31,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:34:31,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:34:31,563 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-25 17:34:31,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-25 17:34:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:34:32,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:34:35,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:34:35,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663183299] [2022-11-25 17:34:35,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663183299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:34:35,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:34:35,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-25 17:34:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117257176] [2022-11-25 17:34:35,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:34:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 17:34:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 17:34:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:34:58,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2022-11-25 17:34:58,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 210 flow. Second operand has 24 states, 24 states have (on average 208.0) internal successors, (4992), 24 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:34:58,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:34:58,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2022-11-25 17:34:58,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:18,260 INFO L130 PetriNetUnfolder]: 1199/2273 cut-off events. [2022-11-25 17:35:18,261 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2022-11-25 17:35:18,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5062 conditions, 2273 events. 1199/2273 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13360 event pairs, 630 based on Foata normal form. 12/1865 useless extension candidates. Maximal degree in co-relation 5038. Up to 504 conditions per place. [2022-11-25 17:35:18,274 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2022-11-25 17:35:18,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1860 flow [2022-11-25 17:35:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:35:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 17:35:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5279 transitions. [2022-11-25 17:35:18,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43129084967320264 [2022-11-25 17:35:18,288 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5279 transitions. [2022-11-25 17:35:18,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5279 transitions. [2022-11-25 17:35:18,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:18,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5279 transitions. [2022-11-25 17:35:18,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 219.95833333333334) internal successors, (5279), 24 states have internal predecessors, (5279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:18,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 510.0) internal successors, (12750), 25 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:18,319 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 510.0) internal successors, (12750), 25 states have internal predecessors, (12750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:18,319 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 210 flow. Second operand 24 states and 5279 transitions. [2022-11-25 17:35:18,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1860 flow [2022-11-25 17:35:18,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:35:18,327 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 394 flow [2022-11-25 17:35:18,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=394, PETRI_PLACES=89, PETRI_TRANSITIONS=47} [2022-11-25 17:35:18,328 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2022-11-25 17:35:18,328 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 394 flow [2022-11-25 17:35:18,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 208.0) internal successors, (4992), 24 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:18,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:18,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:18,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:18,548 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 94626514, now seen corresponding path program 1 times [2022-11-25 17:35:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389589905] [2022-11-25 17:35:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:18,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:18,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:18,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 17:35:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:18,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:35:18,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:18,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:18,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:18,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389589905] [2022-11-25 17:35:18,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389589905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:18,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:18,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:35:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990186523] [2022-11-25 17:35:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:18,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:35:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:35:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:35:18,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 510 [2022-11-25 17:35:18,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:18,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:18,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 510 [2022-11-25 17:35:18,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:19,540 INFO L130 PetriNetUnfolder]: 1493/2756 cut-off events. [2022-11-25 17:35:19,540 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2022-11-25 17:35:19,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2756 events. 1493/2756 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16725 event pairs, 273 based on Foata normal form. 21/2273 useless extension candidates. Maximal degree in co-relation 6191. Up to 2101 conditions per place. [2022-11-25 17:35:19,552 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 51 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2022-11-25 17:35:19,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 58 transitions, 535 flow [2022-11-25 17:35:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:35:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:35:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-11-25 17:35:19,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2022-11-25 17:35:19,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-11-25 17:35:19,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-11-25 17:35:19,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:19,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-11-25 17:35:19,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:19,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:19,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:19,558 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 394 flow. Second operand 3 states and 663 transitions. [2022-11-25 17:35:19,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 58 transitions, 535 flow [2022-11-25 17:35:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 58 transitions, 511 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-25 17:35:19,566 INFO L231 Difference]: Finished difference. Result has 82 places, 50 transitions, 400 flow [2022-11-25 17:35:19,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=82, PETRI_TRANSITIONS=50} [2022-11-25 17:35:19,567 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2022-11-25 17:35:19,567 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 50 transitions, 400 flow [2022-11-25 17:35:19,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:19,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:19,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:19,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:19,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:19,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1773582758, now seen corresponding path program 1 times [2022-11-25 17:35:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:19,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319139596] [2022-11-25 17:35:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:19,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:19,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:19,776 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:19,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 17:35:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:19,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:35:19,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:19,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:19,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319139596] [2022-11-25 17:35:19,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319139596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:19,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:35:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379622004] [2022-11-25 17:35:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:20,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 510 [2022-11-25 17:35:20,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 50 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:20,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:20,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 510 [2022-11-25 17:35:20,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:21,113 INFO L130 PetriNetUnfolder]: 1683/3367 cut-off events. [2022-11-25 17:35:21,113 INFO L131 PetriNetUnfolder]: For 1078/1078 co-relation queries the response was YES. [2022-11-25 17:35:21,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 3367 events. 1683/3367 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 21430 event pairs, 520 based on Foata normal form. 240/3607 useless extension candidates. Maximal degree in co-relation 8290. Up to 1662 conditions per place. [2022-11-25 17:35:21,128 INFO L137 encePairwiseOnDemand]: 504/510 looper letters, 52 selfloop transitions, 12 changer transitions 8/72 dead transitions. [2022-11-25 17:35:21,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 601 flow [2022-11-25 17:35:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:35:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:35:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1272 transitions. [2022-11-25 17:35:21,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41568627450980394 [2022-11-25 17:35:21,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1272 transitions. [2022-11-25 17:35:21,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1272 transitions. [2022-11-25 17:35:21,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:21,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1272 transitions. [2022-11-25 17:35:21,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:21,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:21,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 510.0) internal successors, (3570), 7 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:21,145 INFO L175 Difference]: Start difference. First operand has 82 places, 50 transitions, 400 flow. Second operand 6 states and 1272 transitions. [2022-11-25 17:35:21,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 601 flow [2022-11-25 17:35:21,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 72 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:21,155 INFO L231 Difference]: Finished difference. Result has 89 places, 51 transitions, 439 flow [2022-11-25 17:35:21,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=89, PETRI_TRANSITIONS=51} [2022-11-25 17:35:21,156 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2022-11-25 17:35:21,156 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 51 transitions, 439 flow [2022-11-25 17:35:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:21,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:21,157 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:21,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:21,369 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1433148160, now seen corresponding path program 2 times [2022-11-25 17:35:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:21,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662518111] [2022-11-25 17:35:21,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:35:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:21,372 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:21,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-25 17:35:21,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:35:21,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:21,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:35:21,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:21,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:21,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:21,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662518111] [2022-11-25 17:35:21,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662518111] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:21,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:35:21,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-25 17:35:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632955246] [2022-11-25 17:35:21,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:35:21,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 510 [2022-11-25 17:35:21,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 51 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:21,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:21,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 510 [2022-11-25 17:35:21,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:22,698 INFO L130 PetriNetUnfolder]: 1683/3227 cut-off events. [2022-11-25 17:35:22,698 INFO L131 PetriNetUnfolder]: For 3664/3827 co-relation queries the response was YES. [2022-11-25 17:35:22,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9994 conditions, 3227 events. 1683/3227 cut-off events. For 3664/3827 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 19694 event pairs, 480 based on Foata normal form. 83/3290 useless extension candidates. Maximal degree in co-relation 9952. Up to 2080 conditions per place. [2022-11-25 17:35:22,725 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 54 selfloop transitions, 6 changer transitions 4/65 dead transitions. [2022-11-25 17:35:22,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 65 transitions, 623 flow [2022-11-25 17:35:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:35:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:35:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 877 transitions. [2022-11-25 17:35:22,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42990196078431375 [2022-11-25 17:35:22,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 877 transitions. [2022-11-25 17:35:22,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 877 transitions. [2022-11-25 17:35:22,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:22,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 877 transitions. [2022-11-25 17:35:22,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:22,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:22,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:22,735 INFO L175 Difference]: Start difference. First operand has 89 places, 51 transitions, 439 flow. Second operand 4 states and 877 transitions. [2022-11-25 17:35:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 65 transitions, 623 flow [2022-11-25 17:35:22,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 65 transitions, 589 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-25 17:35:22,746 INFO L231 Difference]: Finished difference. Result has 90 places, 54 transitions, 457 flow [2022-11-25 17:35:22,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=90, PETRI_TRANSITIONS=54} [2022-11-25 17:35:22,746 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2022-11-25 17:35:22,747 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 54 transitions, 457 flow [2022-11-25 17:35:22,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:22,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:22,747 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:22,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-25 17:35:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:22,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash -792153725, now seen corresponding path program 1 times [2022-11-25 17:35:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:22,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381842572] [2022-11-25 17:35:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:22,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:22,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 17:35:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:23,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:35:23,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:23,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:35:23,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381842572] [2022-11-25 17:35:23,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381842572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:35:23,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:35:23,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:35:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775407545] [2022-11-25 17:35:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:35:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:35:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:35:23,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 510 [2022-11-25 17:35:23,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 54 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:23,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:23,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 510 [2022-11-25 17:35:23,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:24,301 INFO L130 PetriNetUnfolder]: 1883/3727 cut-off events. [2022-11-25 17:35:24,301 INFO L131 PetriNetUnfolder]: For 5158/5158 co-relation queries the response was YES. [2022-11-25 17:35:24,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11933 conditions, 3727 events. 1883/3727 cut-off events. For 5158/5158 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 23606 event pairs, 560 based on Foata normal form. 40/3767 useless extension candidates. Maximal degree in co-relation 11890. Up to 1782 conditions per place. [2022-11-25 17:35:24,327 INFO L137 encePairwiseOnDemand]: 503/510 looper letters, 52 selfloop transitions, 19 changer transitions 10/81 dead transitions. [2022-11-25 17:35:24,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 81 transitions, 727 flow [2022-11-25 17:35:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:35:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:35:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1474 transitions. [2022-11-25 17:35:24,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4128851540616246 [2022-11-25 17:35:24,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1474 transitions. [2022-11-25 17:35:24,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1474 transitions. [2022-11-25 17:35:24,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:24,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1474 transitions. [2022-11-25 17:35:24,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.57142857142858) internal successors, (1474), 7 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:24,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 510.0) internal successors, (4080), 8 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:24,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 510.0) internal successors, (4080), 8 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:24,345 INFO L175 Difference]: Start difference. First operand has 90 places, 54 transitions, 457 flow. Second operand 7 states and 1474 transitions. [2022-11-25 17:35:24,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 81 transitions, 727 flow [2022-11-25 17:35:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 81 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:24,369 INFO L231 Difference]: Finished difference. Result has 97 places, 58 transitions, 541 flow [2022-11-25 17:35:24,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=97, PETRI_TRANSITIONS=58} [2022-11-25 17:35:24,370 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2022-11-25 17:35:24,370 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 58 transitions, 541 flow [2022-11-25 17:35:24,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:24,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:24,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:24,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-25 17:35:24,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:24,583 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1162767464, now seen corresponding path program 3 times [2022-11-25 17:35:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:24,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348166007] [2022-11-25 17:35:24,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:35:24,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:24,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:24,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 17:35:24,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:35:24,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:24,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:35:24,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:24,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:25,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348166007] [2022-11-25 17:35:25,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348166007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:25,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:25,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2022-11-25 17:35:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601744969] [2022-11-25 17:35:25,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:25,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:25,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:35:25,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 510 [2022-11-25 17:35:25,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 58 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:25,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:25,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 510 [2022-11-25 17:35:25,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:27,694 INFO L130 PetriNetUnfolder]: 3043/5947 cut-off events. [2022-11-25 17:35:27,695 INFO L131 PetriNetUnfolder]: For 12567/12567 co-relation queries the response was YES. [2022-11-25 17:35:27,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22417 conditions, 5947 events. 3043/5947 cut-off events. For 12567/12567 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 40332 event pairs, 360 based on Foata normal form. 480/6427 useless extension candidates. Maximal degree in co-relation 22372. Up to 2302 conditions per place. [2022-11-25 17:35:27,746 INFO L137 encePairwiseOnDemand]: 502/510 looper letters, 79 selfloop transitions, 52 changer transitions 4/135 dead transitions. [2022-11-25 17:35:27,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 1270 flow [2022-11-25 17:35:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:35:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:35:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2738 transitions. [2022-11-25 17:35:27,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41297134238310707 [2022-11-25 17:35:27,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2738 transitions. [2022-11-25 17:35:27,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2738 transitions. [2022-11-25 17:35:27,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:27,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2738 transitions. [2022-11-25 17:35:27,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 210.6153846153846) internal successors, (2738), 13 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:27,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 510.0) internal successors, (7140), 14 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:27,767 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 510.0) internal successors, (7140), 14 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:27,767 INFO L175 Difference]: Start difference. First operand has 97 places, 58 transitions, 541 flow. Second operand 13 states and 2738 transitions. [2022-11-25 17:35:27,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 1270 flow [2022-11-25 17:35:27,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 1189 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 17:35:27,816 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 1024 flow [2022-11-25 17:35:27,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1024, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2022-11-25 17:35:27,817 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2022-11-25 17:35:27,817 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 1024 flow [2022-11-25 17:35:27,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:27,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:27,819 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:27,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:28,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:28,031 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:28,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1616544596, now seen corresponding path program 4 times [2022-11-25 17:35:28,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:28,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397159806] [2022-11-25 17:35:28,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:35:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:28,033 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:28,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 17:35:28,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:35:28,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:28,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:35:28,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:28,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:28,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:28,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397159806] [2022-11-25 17:35:28,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397159806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:28,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:28,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-25 17:35:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784096652] [2022-11-25 17:35:28,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:35:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:35:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:35:28,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 510 [2022-11-25 17:35:28,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 1024 flow. Second operand has 11 states, 11 states have (on average 206.36363636363637) internal successors, (2270), 11 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:28,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:28,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 510 [2022-11-25 17:35:28,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:31,004 INFO L130 PetriNetUnfolder]: 3483/6627 cut-off events. [2022-11-25 17:35:31,004 INFO L131 PetriNetUnfolder]: For 23570/23570 co-relation queries the response was YES. [2022-11-25 17:35:31,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30743 conditions, 6627 events. 3483/6627 cut-off events. For 23570/23570 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 44565 event pairs, 560 based on Foata normal form. 480/7107 useless extension candidates. Maximal degree in co-relation 30692. Up to 2502 conditions per place. [2022-11-25 17:35:31,074 INFO L137 encePairwiseOnDemand]: 503/510 looper letters, 77 selfloop transitions, 61 changer transitions 4/142 dead transitions. [2022-11-25 17:35:31,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 142 transitions, 1564 flow [2022-11-25 17:35:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:35:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:35:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2101 transitions. [2022-11-25 17:35:31,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4119607843137255 [2022-11-25 17:35:31,081 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2101 transitions. [2022-11-25 17:35:31,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2101 transitions. [2022-11-25 17:35:31,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:31,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2101 transitions. [2022-11-25 17:35:31,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 210.1) internal successors, (2101), 10 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:31,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 510.0) internal successors, (5610), 11 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:31,096 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 510.0) internal successors, (5610), 11 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:31,096 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 1024 flow. Second operand 10 states and 2101 transitions. [2022-11-25 17:35:31,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 142 transitions, 1564 flow [2022-11-25 17:35:31,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 142 transitions, 1458 flow, removed 50 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:31,363 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 1258 flow [2022-11-25 17:35:31,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1258, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2022-11-25 17:35:31,364 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2022-11-25 17:35:31,364 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 1258 flow [2022-11-25 17:35:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 206.36363636363637) internal successors, (2270), 11 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:31,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:31,365 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:31,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-25 17:35:31,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:31,579 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 221059598, now seen corresponding path program 2 times [2022-11-25 17:35:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127099668] [2022-11-25 17:35:31,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:35:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:31,581 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:31,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-25 17:35:31,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:35:31,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:31,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:35:31,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:31,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:35:32,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:32,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127099668] [2022-11-25 17:35:32,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127099668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:32,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:32,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 17:35:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173807917] [2022-11-25 17:35:32,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:35:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:35:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:35:32,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 510 [2022-11-25 17:35:32,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 115 transitions, 1258 flow. Second operand has 10 states, 10 states have (on average 213.5) internal successors, (2135), 10 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:32,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:32,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 510 [2022-11-25 17:35:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:34,856 INFO L130 PetriNetUnfolder]: 4343/8067 cut-off events. [2022-11-25 17:35:34,856 INFO L131 PetriNetUnfolder]: For 33439/33799 co-relation queries the response was YES. [2022-11-25 17:35:34,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38488 conditions, 8067 events. 4343/8067 cut-off events. For 33439/33799 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 55287 event pairs, 240 based on Foata normal form. 1180/9167 useless extension candidates. Maximal degree in co-relation 38434. Up to 2842 conditions per place. [2022-11-25 17:35:34,908 INFO L137 encePairwiseOnDemand]: 505/510 looper letters, 103 selfloop transitions, 69 changer transitions 0/175 dead transitions. [2022-11-25 17:35:34,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 1989 flow [2022-11-25 17:35:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:35:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:35:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2169 transitions. [2022-11-25 17:35:34,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4252941176470588 [2022-11-25 17:35:34,912 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2169 transitions. [2022-11-25 17:35:34,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2169 transitions. [2022-11-25 17:35:34,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:34,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2169 transitions. [2022-11-25 17:35:34,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 216.9) internal successors, (2169), 10 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:34,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 510.0) internal successors, (5610), 11 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:34,919 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 510.0) internal successors, (5610), 11 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:34,919 INFO L175 Difference]: Start difference. First operand has 122 places, 115 transitions, 1258 flow. Second operand 10 states and 2169 transitions. [2022-11-25 17:35:34,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 1989 flow [2022-11-25 17:35:35,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 175 transitions, 1850 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-11-25 17:35:35,175 INFO L231 Difference]: Finished difference. Result has 122 places, 130 transitions, 1405 flow [2022-11-25 17:35:35,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1405, PETRI_PLACES=122, PETRI_TRANSITIONS=130} [2022-11-25 17:35:35,176 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2022-11-25 17:35:35,176 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 130 transitions, 1405 flow [2022-11-25 17:35:35,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.5) internal successors, (2135), 10 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:35,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:35,177 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:35,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:35,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:35,389 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1988425393, now seen corresponding path program 3 times [2022-11-25 17:35:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742214031] [2022-11-25 17:35:35,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:35:35,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:35,391 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 17:35:35,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:35:35,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:35,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:35:35,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:35:35,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:35:35,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:35,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742214031] [2022-11-25 17:35:35,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742214031] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:35,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:35:35,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 17:35:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753714661] [2022-11-25 17:35:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:35:35,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:35:35,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:35:35,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:35:35,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 510 [2022-11-25 17:35:35,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 130 transitions, 1405 flow. Second operand has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:35,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:35,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 510 [2022-11-25 17:35:35,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:37,717 INFO L130 PetriNetUnfolder]: 4443/8147 cut-off events. [2022-11-25 17:35:37,717 INFO L131 PetriNetUnfolder]: For 25021/25121 co-relation queries the response was YES. [2022-11-25 17:35:37,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38686 conditions, 8147 events. 4443/8147 cut-off events. For 25021/25121 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 54109 event pairs, 380 based on Foata normal form. 340/8327 useless extension candidates. Maximal degree in co-relation 38636. Up to 6520 conditions per place. [2022-11-25 17:35:37,794 INFO L137 encePairwiseOnDemand]: 506/510 looper letters, 118 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2022-11-25 17:35:37,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 137 transitions, 1681 flow [2022-11-25 17:35:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:35:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:35:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 859 transitions. [2022-11-25 17:35:37,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.421078431372549 [2022-11-25 17:35:37,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 859 transitions. [2022-11-25 17:35:37,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 859 transitions. [2022-11-25 17:35:37,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:37,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 859 transitions. [2022-11-25 17:35:37,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.75) internal successors, (859), 4 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:37,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:37,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:37,801 INFO L175 Difference]: Start difference. First operand has 122 places, 130 transitions, 1405 flow. Second operand 4 states and 859 transitions. [2022-11-25 17:35:37,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 137 transitions, 1681 flow [2022-11-25 17:35:37,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 137 transitions, 1366 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-25 17:35:37,993 INFO L231 Difference]: Finished difference. Result has 119 places, 126 transitions, 1115 flow [2022-11-25 17:35:37,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1115, PETRI_PLACES=119, PETRI_TRANSITIONS=126} [2022-11-25 17:35:37,994 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2022-11-25 17:35:37,994 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 126 transitions, 1115 flow [2022-11-25 17:35:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:37,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:37,994 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:38,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:38,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:38,202 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:38,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash 905409077, now seen corresponding path program 4 times [2022-11-25 17:35:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:38,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641991186] [2022-11-25 17:35:38,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:35:38,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:38,204 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:38,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-25 17:35:38,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:35:38,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:35:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:35:38,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:35:38,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:35:38,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:38,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641991186] [2022-11-25 17:35:38,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641991186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:35:38,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:38,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-25 17:35:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531545746] [2022-11-25 17:35:38,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:38,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:35:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:35:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:35:39,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 510 [2022-11-25 17:35:39,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 1115 flow. Second operand has 13 states, 13 states have (on average 206.30769230769232) internal successors, (2682), 13 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:39,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:35:39,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 510 [2022-11-25 17:35:39,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:35:41,598 INFO L130 PetriNetUnfolder]: 4363/7847 cut-off events. [2022-11-25 17:35:41,598 INFO L131 PetriNetUnfolder]: For 18105/18105 co-relation queries the response was YES. [2022-11-25 17:35:41,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32124 conditions, 7847 events. 4363/7847 cut-off events. For 18105/18105 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 50097 event pairs, 1160 based on Foata normal form. 80/7847 useless extension candidates. Maximal degree in co-relation 32076. Up to 4902 conditions per place. [2022-11-25 17:35:41,653 INFO L137 encePairwiseOnDemand]: 503/510 looper letters, 114 selfloop transitions, 23 changer transitions 5/142 dead transitions. [2022-11-25 17:35:41,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 142 transitions, 1473 flow [2022-11-25 17:35:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:35:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:35:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1671 transitions. [2022-11-25 17:35:41,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40955882352941175 [2022-11-25 17:35:41,657 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1671 transitions. [2022-11-25 17:35:41,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1671 transitions. [2022-11-25 17:35:41,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:35:41,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1671 transitions. [2022-11-25 17:35:41,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 208.875) internal successors, (1671), 8 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:41,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 510.0) internal successors, (4590), 9 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:41,665 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 510.0) internal successors, (4590), 9 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:41,665 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 1115 flow. Second operand 8 states and 1671 transitions. [2022-11-25 17:35:41,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 142 transitions, 1473 flow [2022-11-25 17:35:41,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 142 transitions, 1448 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-25 17:35:41,772 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 1157 flow [2022-11-25 17:35:41,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1157, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2022-11-25 17:35:41,773 INFO L288 CegarLoopForPetriNet]: 44 programPoint places, 83 predicate places. [2022-11-25 17:35:41,773 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 1157 flow [2022-11-25 17:35:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.30769230769232) internal successors, (2682), 13 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:35:41,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:35:41,774 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:41,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:41,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:41,976 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-25 17:35:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash -949330705, now seen corresponding path program 1 times [2022-11-25 17:35:41,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:41,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343622133] [2022-11-25 17:35:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:35:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:41,978 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:35:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b494cfb-ded7-4a9f-aa42-40f94ca084e1/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-25 17:35:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:42,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:35:42,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:55,182 WARN L233 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 780 DAG size of output: 204 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 17:35:55,184 INFO L321 Elim1Store]: treesize reduction 1224, result has 22.0 percent of original size [2022-11-25 17:35:55,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 36 new quantified variables, introduced 190 case distinctions, treesize of input 21313 treesize of output 583 [2022-11-25 17:46:42,566 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 3995 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)