./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/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_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/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_103cfeef-5cbb-44b7-8673-bbea31611a2d/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:18:32,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:18:32,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:18:32,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:18:32,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:18:32,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:18:32,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:18:32,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:18:32,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:18:32,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:18:32,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:18:32,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:18:32,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:18:32,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:18:32,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:18:32,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:18:32,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:18:32,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:18:32,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:18:32,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:18:32,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:18:32,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:18:32,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:18:32,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:18:32,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:18:32,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:18:32,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:18:32,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:18:32,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:18:32,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:18:32,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:18:32,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:18:32,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:18:32,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:18:32,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:18:32,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:18:32,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:18:32,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:18:32,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:18:32,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:18:32,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:18:32,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:18:32,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:18:32,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:18:32,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:18:32,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:18:32,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:18:32,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:18:32,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:18:32,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:18:32,218 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:18:32,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:18:32,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:18:32,219 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:18:32,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:18:32,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:18:32,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:18:32,220 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:18:32,221 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:18:32,221 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:18:32,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:18:32,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:18:32,221 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:18:32,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:18:32,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:18:32,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:18:32,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:18:32,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:32,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:18:32,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:18:32,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:18:32,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:18:32,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:18:32,224 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:18:32,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:18:32,224 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-25 18:18:32,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:18:32,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:18:32,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:18:32,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:18:32,576 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:18:32,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-25 18:18:35,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:18:35,908 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:18:35,909 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-25 18:18:35,917 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/91f10ce4a/99fe608cea9f443baacd3fc38cd76bc7/FLAG3de15b785 [2022-11-25 18:18:35,932 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/91f10ce4a/99fe608cea9f443baacd3fc38cd76bc7 [2022-11-25 18:18:35,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:18:35,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:18:35,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:35,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:18:35,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:18:35,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:35" (1/1) ... [2022-11-25 18:18:35,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c5bb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:35, skipping insertion in model container [2022-11-25 18:18:35,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:35" (1/1) ... [2022-11-25 18:18:35,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:18:36,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:18:36,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:36,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:36,246 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-25 18:18:36,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:36,271 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:18:36,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36d57a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:36, skipping insertion in model container [2022-11-25 18:18:36,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:36,272 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:18:36,274 INFO L158 Benchmark]: Toolchain (without parser) took 336.74ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 59.4MB in the beginning and 143.2MB in the end (delta: -83.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-11-25 18:18:36,275 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:18:36,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.01ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 59.2MB in the beginning and 143.2MB in the end (delta: -84.0MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-11-25 18:18:36,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.01ms. Allocated memory was 119.5MB in the beginning and 180.4MB in the end (delta: 60.8MB). Free memory was 59.2MB in the beginning and 143.2MB in the end (delta: -84.0MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 143]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/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_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/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_103cfeef-5cbb-44b7-8673-bbea31611a2d/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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:18:38,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:18:38,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:18:38,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:18:38,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:18:38,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:18:38,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:18:38,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:18:38,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:18:38,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:18:38,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:18:38,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:18:38,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:18:38,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:18:38,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:18:38,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:18:38,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:18:38,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:18:38,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:18:38,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:18:38,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:18:38,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:18:38,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:18:38,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:18:38,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:18:38,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:18:38,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:18:38,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:18:38,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:18:38,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:18:38,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:18:38,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:18:38,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:18:38,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:18:38,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:18:38,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:18:38,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:18:38,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:18:38,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:18:38,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:18:38,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:18:38,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:18:38,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:18:38,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:18:38,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:18:38,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:18:38,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:18:38,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:18:38,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:18:38,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:18:38,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:18:38,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:18:38,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:18:38,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:18:38,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:18:38,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:18:38,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:18:38,787 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:18:38,788 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:18:38,788 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:18:38,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:18:38,788 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:18:38,788 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:18:38,789 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:18:38,789 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:18:38,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:18:38,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:18:38,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:18:38,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:18:38,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:38,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:18:38,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:18:38,791 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:18:38,791 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:18:38,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:18:38,792 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:18:38,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:18:38,792 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:18:38,792 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-25 18:18:39,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:18:39,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:18:39,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:18:39,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:18:39,182 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:18:39,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-25 18:18:42,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:18:42,492 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:18:42,492 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-25 18:18:42,500 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/d984da974/79fd7459a3d541219c31bcc5c2490a88/FLAGe943737d6 [2022-11-25 18:18:42,515 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/data/d984da974/79fd7459a3d541219c31bcc5c2490a88 [2022-11-25 18:18:42,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:18:42,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:18:42,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:42,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:18:42,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:18:42,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:42" (1/1) ... [2022-11-25 18:18:42,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5e0eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:42, skipping insertion in model container [2022-11-25 18:18:42,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:42" (1/1) ... [2022-11-25 18:18:42,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:18:42,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:18:42,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,805 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-25 18:18:42,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:42,859 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:18:42,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:18:42,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,902 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,925 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,926 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,932 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-25 18:18:42,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:42,943 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:18:42,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,970 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:18:42,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:18:42,978 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_103cfeef-5cbb-44b7-8673-bbea31611a2d/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-25 18:18:42,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:42,999 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:18:43,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43 WrapperNode [2022-11-25 18:18:43,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:43,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:43,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:18:43,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:18:43,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,046 INFO L138 Inliner]: procedures = 29, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 172 [2022-11-25 18:18:43,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:43,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:18:43,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:18:43,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:18:43,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,106 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:18:43,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:18:43,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:18:43,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:18:43,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:43,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:18:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:18:43,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:18:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:18:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:18:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:18:43,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:18:43,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:18:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:18:43,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:18:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:18:43,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:18:43,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 18:18:43,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 18:18:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 18:18:43,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 18:18:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:18:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:18:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:18:43,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:18:43,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:18:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:18:43,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:18:43,214 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:18:43,448 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:18:43,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:18:44,272 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:18:44,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:18:44,565 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 18:18:44,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:44 BoogieIcfgContainer [2022-11-25 18:18:44,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:18:44,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:18:44,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:18:44,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:18:44,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:18:42" (1/3) ... [2022-11-25 18:18:44,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20797876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:44, skipping insertion in model container [2022-11-25 18:18:44,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (2/3) ... [2022-11-25 18:18:44,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20797876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:44, skipping insertion in model container [2022-11-25 18:18:44,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:44" (3/3) ... [2022-11-25 18:18:44,586 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-25 18:18:44,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:18:44,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-25 18:18:44,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:18:44,849 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-25 18:18:44,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 243 transitions, 526 flow [2022-11-25 18:18:45,113 INFO L130 PetriNetUnfolder]: 14/238 cut-off events. [2022-11-25 18:18:45,113 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 18:18:45,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 238 events. 14/238 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-11-25 18:18:45,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 243 transitions, 526 flow [2022-11-25 18:18:45,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 233 transitions, 496 flow [2022-11-25 18:18:45,143 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:18:45,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 233 transitions, 496 flow [2022-11-25 18:18:45,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 233 transitions, 496 flow [2022-11-25 18:18:45,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 233 transitions, 496 flow [2022-11-25 18:18:45,311 INFO L130 PetriNetUnfolder]: 14/233 cut-off events. [2022-11-25 18:18:45,312 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 18:18:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 233 events. 14/233 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-11-25 18:18:45,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 8466 [2022-11-25 18:19:32,917 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:19:42,891 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 144 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:19:48,670 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 135 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 18:19:48,675 INFO L134 LiptonReduction]: Checked pairs total: 13776 [2022-11-25 18:19:48,675 INFO L136 LiptonReduction]: Total number of compositions: 225 [2022-11-25 18:19:48,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:19:48,694 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;@e17fc69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:19:48,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-11-25 18:19:48,698 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:19:48,698 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:19:48,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:19:48,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:19:48,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-25 18:19:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 32358, now seen corresponding path program 1 times [2022-11-25 18:19:48,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:19:48,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869056909] [2022-11-25 18:19:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:19:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:19:48,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:19:48,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:19:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:48,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:19:48,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:49,244 INFO L321 Elim1Store]: treesize reduction 240, result has 26.4 percent of original size [2022-11-25 18:19:49,246 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 5 case distinctions, treesize of input 21 treesize of output 93 [2022-11-25 18:19:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:49,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:19:49,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:19:49,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869056909] [2022-11-25 18:19:49,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869056909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:49,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:49,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:19:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087499656] [2022-11-25 18:19:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:49,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:49,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:19:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:49,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 468 [2022-11-25 18:19:49,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:49,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:19:49,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 468 [2022-11-25 18:19:49,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:00,164 INFO L130 PetriNetUnfolder]: 65444/78595 cut-off events. [2022-11-25 18:20:00,165 INFO L131 PetriNetUnfolder]: For 607/607 co-relation queries the response was YES. [2022-11-25 18:20:00,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159600 conditions, 78595 events. 65444/78595 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 371467 event pairs, 42030 based on Foata normal form. 0/30946 useless extension candidates. Maximal degree in co-relation 143378. Up to 78389 conditions per place. [2022-11-25 18:20:00,805 INFO L137 encePairwiseOnDemand]: 453/468 looper letters, 64 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2022-11-25 18:20:00,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 71 transitions, 302 flow [2022-11-25 18:20:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:00,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-25 18:20:00,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47507122507122507 [2022-11-25 18:20:00,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-25 18:20:00,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-25 18:20:00,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:00,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-25 18:20:00,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:00,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:00,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:00,861 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 200 flow. Second operand 3 states and 667 transitions. [2022-11-25 18:20:00,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 71 transitions, 302 flow [2022-11-25 18:20:01,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 282 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 18:20:01,238 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 154 flow [2022-11-25 18:20:01,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2022-11-25 18:20:01,244 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -22 predicate places. [2022-11-25 18:20:01,244 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 154 flow [2022-11-25 18:20:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:01,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:01,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:20:01,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:01,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-25 18:20:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash 32467, now seen corresponding path program 1 times [2022-11-25 18:20:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:01,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738931761] [2022-11-25 18:20:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:01,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:01,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:20:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:01,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:20:01,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:01,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:01,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:01,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738931761] [2022-11-25 18:20:01,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738931761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:01,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:01,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994641468] [2022-11-25 18:20:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:01,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:01,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:01,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 468 [2022-11-25 18:20:01,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:01,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:01,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 468 [2022-11-25 18:20:01,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:09,880 INFO L130 PetriNetUnfolder]: 65444/78597 cut-off events. [2022-11-25 18:20:09,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:20:09,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158115 conditions, 78597 events. 65444/78597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 371865 event pairs, 42030 based on Foata normal form. 0/30947 useless extension candidates. Maximal degree in co-relation 158109. Up to 78390 conditions per place. [2022-11-25 18:20:10,441 INFO L137 encePairwiseOnDemand]: 463/468 looper letters, 65 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-11-25 18:20:10,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 292 flow [2022-11-25 18:20:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2022-11-25 18:20:10,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4793447293447293 [2022-11-25 18:20:10,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2022-11-25 18:20:10,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2022-11-25 18:20:10,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:10,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2022-11-25 18:20:10,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:10,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:10,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:10,461 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 154 flow. Second operand 3 states and 673 transitions. [2022-11-25 18:20:10,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 292 flow [2022-11-25 18:20:10,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:10,466 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 169 flow [2022-11-25 18:20:10,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2022-11-25 18:20:10,469 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -20 predicate places. [2022-11-25 18:20:10,472 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 169 flow [2022-11-25 18:20:10,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:10,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:10,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:20:10,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:10,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:10,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-25 18:20:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 32357, now seen corresponding path program 1 times [2022-11-25 18:20:10,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:10,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894439599] [2022-11-25 18:20:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:10,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:10,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:10,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:10,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:20:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:10,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:20:10,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:11,223 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-25 18:20:11,224 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-25 18:20:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:11,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:11,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:11,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894439599] [2022-11-25 18:20:11,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894439599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:11,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:11,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783973030] [2022-11-25 18:20:11,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:11,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 468 [2022-11-25 18:20:11,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:11,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:11,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 468 [2022-11-25 18:20:11,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:18,481 INFO L130 PetriNetUnfolder]: 65444/78596 cut-off events. [2022-11-25 18:20:18,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:20:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158121 conditions, 78596 events. 65444/78596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 371834 event pairs, 42030 based on Foata normal form. 1/30949 useless extension candidates. Maximal degree in co-relation 158113. Up to 78390 conditions per place. [2022-11-25 18:20:19,230 INFO L137 encePairwiseOnDemand]: 465/468 looper letters, 64 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-11-25 18:20:19,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 301 flow [2022-11-25 18:20:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-11-25 18:20:19,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47507122507122507 [2022-11-25 18:20:19,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-11-25 18:20:19,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-11-25 18:20:19,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:19,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-11-25 18:20:19,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 468.0) internal successors, (1872), 4 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,247 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 169 flow. Second operand 3 states and 667 transitions. [2022-11-25 18:20:19,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 301 flow [2022-11-25 18:20:19,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 297 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:19,250 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 173 flow [2022-11-25 18:20:19,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=468, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2022-11-25 18:20:19,252 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, -18 predicate places. [2022-11-25 18:20:19,253 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 173 flow [2022-11-25 18:20:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:19,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:19,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:20:19,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:19,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-25 18:20:19,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:19,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1006718, now seen corresponding path program 1 times [2022-11-25 18:20:19,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:19,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044677296] [2022-11-25 18:20:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:19,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:19,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:19,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103cfeef-5cbb-44b7-8673-bbea31611a2d/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:20:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:19,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:20:19,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:20,076 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-25 18:20:20,077 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-25 18:20:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:20,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:20:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:20,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044677296] [2022-11-25 18:20:20,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044677296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:20:20,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:20:20,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:20:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477882801] [2022-11-25 18:20:20,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:20:20,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:20:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:20:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:20:22,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 468 [2022-11-25 18:20:22,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:22,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:22,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 468 [2022-11-25 18:20:22,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand