./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:53:20,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:53:20,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:53:20,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:53:20,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:53:20,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:53:20,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:53:20,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:53:20,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:53:20,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:53:20,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:53:20,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:53:20,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:53:20,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:53:20,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:53:20,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:53:20,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:53:20,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:53:20,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:53:20,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:53:20,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:53:20,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:53:20,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:53:20,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:53:20,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:53:20,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:53:20,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:53:20,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:53:20,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:53:20,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:53:20,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:53:20,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:53:20,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:53:20,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:53:20,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:53:20,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:53:20,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:53:20,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:53:20,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:53:20,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:53:20,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:53:20,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:53:20,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:53:20,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:53:20,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:53:20,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:53:20,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:53:20,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:53:20,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:53:20,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:53:20,114 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:53:20,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:53:20,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:53:20,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:53:20,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:53:20,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:53:20,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:53:20,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:53:20,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:53:20,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:53:20,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:53:20,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:53:20,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:53:20,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:53:20,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:53:20,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:53:20,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:53:20,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:53:20,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:53:20,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:53:20,119 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:53:20,119 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_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2022-12-13 11:53:20,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:53:20,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:53:20,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:53:20,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:53:20,354 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:53:20,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-12-13 11:53:22,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:53:23,067 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:53:23,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-12-13 11:53:23,073 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/6bf1a2688/eb9be74ce97644eaaecbbecd82397993/FLAG6a0697f87 [2022-12-13 11:53:23,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/6bf1a2688/eb9be74ce97644eaaecbbecd82397993 [2022-12-13 11:53:23,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:53:23,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:53:23,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:23,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:53:23,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:53:23,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:23" (1/1) ... [2022-12-13 11:53:23,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0dbe09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:23, skipping insertion in model container [2022-12-13 11:53:23,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:23" (1/1) ... [2022-12-13 11:53:23,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:53:23,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:53:23,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:23,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:23,267 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_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-12-13 11:53:23,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:23,288 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 11:53:23,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ad991ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:23, skipping insertion in model container [2022-12-13 11:53:23,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:23,289 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 11:53:23,291 INFO L158 Benchmark]: Toolchain (without parser) took 201.09ms. Allocated memory is still 130.0MB. Free memory was 101.1MB in the beginning and 90.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:53:23,291 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:53:23,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.76ms. Allocated memory is still 130.0MB. Free memory was 101.1MB in the beginning and 90.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:53:23,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.76ms. Allocated memory is still 130.0MB. Free memory was 101.1MB in the beginning and 90.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:53:24,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:53:24,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:53:24,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:53:24,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:53:24,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:53:24,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:53:24,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:53:24,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:53:24,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:53:24,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:53:24,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:53:24,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:53:24,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:53:24,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:53:24,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:53:24,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:53:24,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:53:24,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:53:24,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:53:24,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:53:24,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:53:24,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:53:24,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:53:24,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:53:24,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:53:24,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:53:24,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:53:24,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:53:24,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:53:24,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:53:24,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:53:24,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:53:24,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:53:24,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:53:24,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:53:24,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:53:24,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:53:24,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:53:24,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:53:24,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:53:24,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 11:53:24,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:53:24,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:53:24,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:53:24,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:53:24,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:53:24,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:53:24,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:53:24,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:53:24,795 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:53:24,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:53:24,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:53:24,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:53:24,796 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:53:24,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:53:24,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:53:24,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:53:24,798 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:53:24,798 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_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9b434f3343269d91303305376bff127738dc22172486554888e346753333fd7 [2022-12-13 11:53:25,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:53:25,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:53:25,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:53:25,022 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:53:25,023 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:53:25,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-12-13 11:53:27,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:53:27,769 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:53:27,769 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2022-12-13 11:53:27,776 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/d20bb5808/2dcd703867e84a5a9a8a511a61bd022f/FLAGe2dd6f24b [2022-12-13 11:53:27,789 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/data/d20bb5808/2dcd703867e84a5a9a8a511a61bd022f [2022-12-13 11:53:27,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:53:27,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:53:27,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:27,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:53:27,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:53:27,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:27" (1/1) ... [2022-12-13 11:53:27,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3932af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:27, skipping insertion in model container [2022-12-13 11:53:27,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:53:27" (1/1) ... [2022-12-13 11:53:27,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:53:27,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:53:27,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:27,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:27,970 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_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-12-13 11:53:27,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:27,993 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 11:53:27,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:53:28,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,018 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_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-12-13 11:53:28,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:28,027 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:53:28,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:53:28,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:53:28,049 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_834afd88-6711-471f-b8e3-431a5ab8eac8/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c[3056,3069] [2022-12-13 11:53:28,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:53:28,075 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:53:28,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28 WrapperNode [2022-12-13 11:53:28,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:53:28,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:53:28,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:53:28,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:53:28,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,110 INFO L138 Inliner]: procedures = 27, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 162 [2022-12-13 11:53:28,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:53:28,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:53:28,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:53:28,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:53:28,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:53:28,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:53:28,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:53:28,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:53:28,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (1/1) ... [2022-12-13 11:53:28,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:53:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:53:28,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:53:28,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:53:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:53:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:53:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:53:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 11:53:28,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:53:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:53:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:53:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:53:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:53:28,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 11:53:28,194 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:53:28,278 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:53:28,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:53:28,654 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:53:28,710 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:53:28,710 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 11:53:28,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:53:28 BoogieIcfgContainer [2022-12-13 11:53:28,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:53:28,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:53:28,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:53:28,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:53:28,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:53:27" (1/3) ... [2022-12-13 11:53:28,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f239f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:53:28, skipping insertion in model container [2022-12-13 11:53:28,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:53:28" (2/3) ... [2022-12-13 11:53:28,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f239f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:53:28, skipping insertion in model container [2022-12-13 11:53:28,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:53:28" (3/3) ... [2022-12-13 11:53:28,718 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2022-12-13 11:53:28,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:53:28,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-13 11:53:28,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:53:28,793 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:53:28,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 174 transitions, 372 flow [2022-12-13 11:53:28,866 INFO L130 PetriNetUnfolder]: 11/171 cut-off events. [2022-12-13 11:53:28,867 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:53:28,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 11/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2022-12-13 11:53:28,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 174 transitions, 372 flow [2022-12-13 11:53:28,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 166 transitions, 350 flow [2022-12-13 11:53:28,878 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:53:28,886 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 166 transitions, 350 flow [2022-12-13 11:53:28,888 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 166 transitions, 350 flow [2022-12-13 11:53:28,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 166 transitions, 350 flow [2022-12-13 11:53:28,916 INFO L130 PetriNetUnfolder]: 11/166 cut-off events. [2022-12-13 11:53:28,916 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:53:28,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 11/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2022-12-13 11:53:28,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 1674 [2022-12-13 11:53:47,442 INFO L134 LiptonReduction]: Checked pairs total: 3423 [2022-12-13 11:53:47,443 INFO L136 LiptonReduction]: Total number of compositions: 172 [2022-12-13 11:53:47,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:53:47,457 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;@60f90edf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:53:47,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-12-13 11:53:47,459 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:53:47,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:47,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:47,460 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:53:47,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash 22598, now seen corresponding path program 1 times [2022-12-13 11:53:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:47,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950952203] [2022-12-13 11:53:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:47,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:47,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:47,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:47,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 11:53:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:47,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:53:47,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:47,716 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:53:47,717 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:53:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:47,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:47,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950952203] [2022-12-13 11:53:47,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950952203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:47,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:47,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865956554] [2022-12-13 11:53:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:47,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:47,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 11:53:47,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:47,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:47,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 11:53:47,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:48,604 INFO L130 PetriNetUnfolder]: 2419/3518 cut-off events. [2022-12-13 11:53:48,604 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2022-12-13 11:53:48,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7121 conditions, 3518 events. 2419/3518 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18775 event pairs, 1756 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 3275. Up to 1700 conditions per place. [2022-12-13 11:53:48,623 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 76 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2022-12-13 11:53:48,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 354 flow [2022-12-13 11:53:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:48,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-12-13 11:53:48,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028901734104047 [2022-12-13 11:53:48,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-12-13 11:53:48,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-12-13 11:53:48,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:48,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-12-13 11:53:48,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:48,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:48,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:48,651 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 106 flow. Second operand 3 states and 522 transitions. [2022-12-13 11:53:48,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 354 flow [2022-12-13 11:53:48,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 330 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 11:53:48,660 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 104 flow [2022-12-13 11:53:48,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2022-12-13 11:53:48,664 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-13 11:53:48,665 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 104 flow [2022-12-13 11:53:48,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:48,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:48,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:53:48,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:53:48,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:48,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash 22597, now seen corresponding path program 1 times [2022-12-13 11:53:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052906748] [2022-12-13 11:53:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:48,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:48,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:48,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 11:53:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:49,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:53:49,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:49,123 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 11:53:49,124 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 11:53:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:49,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:49,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052906748] [2022-12-13 11:53:49,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052906748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:49,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:49,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27965346] [2022-12-13 11:53:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:49,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:49,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:49,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 11:53:49,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:49,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:49,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 11:53:49,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:49,779 INFO L130 PetriNetUnfolder]: 2419/3516 cut-off events. [2022-12-13 11:53:49,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:49,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7005 conditions, 3516 events. 2419/3516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18694 event pairs, 1756 based on Foata normal form. 0/1611 useless extension candidates. Maximal degree in co-relation 3500. Up to 3394 conditions per place. [2022-12-13 11:53:49,793 INFO L137 encePairwiseOnDemand]: 344/346 looper letters, 39 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 11:53:49,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 182 flow [2022-12-13 11:53:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-12-13 11:53:49,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4633911368015414 [2022-12-13 11:53:49,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-12-13 11:53:49,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-12-13 11:53:49,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:49,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-12-13 11:53:49,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:49,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:49,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:49,802 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 104 flow. Second operand 3 states and 481 transitions. [2022-12-13 11:53:49,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 182 flow [2022-12-13 11:53:49,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:49,803 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 102 flow [2022-12-13 11:53:49,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2022-12-13 11:53:49,804 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2022-12-13 11:53:49,804 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 102 flow [2022-12-13 11:53:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:49,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:49,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:53:49,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 11:53:50,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:50,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash 22724, now seen corresponding path program 1 times [2022-12-13 11:53:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:50,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142129885] [2022-12-13 11:53:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:50,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:50,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:50,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:50,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 11:53:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:50,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:53:50,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:50,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:50,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:50,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:50,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:50,168 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 11:53:50,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-12-13 11:53:50,198 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 11:53:50,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-13 11:53:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:50,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:50,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142129885] [2022-12-13 11:53:50,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142129885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:50,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:50,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483214466] [2022-12-13 11:53:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:50,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 11:53:50,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:50,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:50,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 11:53:50,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:50,924 INFO L130 PetriNetUnfolder]: 2011/2962 cut-off events. [2022-12-13 11:53:50,924 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 2962 events. 2011/2962 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 15578 event pairs, 1444 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 5889. Up to 2840 conditions per place. [2022-12-13 11:53:50,947 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 37 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 11:53:50,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 174 flow [2022-12-13 11:53:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-12-13 11:53:50,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4653179190751445 [2022-12-13 11:53:50,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-12-13 11:53:50,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-12-13 11:53:50,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:50,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-12-13 11:53:50,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:50,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:50,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:50,958 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 102 flow. Second operand 3 states and 483 transitions. [2022-12-13 11:53:50,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 174 flow [2022-12-13 11:53:50,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:50,960 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 99 flow [2022-12-13 11:53:50,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2022-12-13 11:53:50,961 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2022-12-13 11:53:50,961 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 99 flow [2022-12-13 11:53:50,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:50,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:50,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:53:50,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-13 11:53:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:51,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 22723, now seen corresponding path program 1 times [2022-12-13 11:53:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274972911] [2022-12-13 11:53:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:51,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:51,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 11:53:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:51,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:53:51,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:51,279 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-12-13 11:53:51,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-12-13 11:53:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:51,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:51,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:51,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274972911] [2022-12-13 11:53:51,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274972911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:51,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:51,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569980279] [2022-12-13 11:53:51,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:51,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:51,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 11:53:51,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:51,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:51,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 11:53:51,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:51,872 INFO L130 PetriNetUnfolder]: 1603/2408 cut-off events. [2022-12-13 11:53:51,873 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 2408 events. 1603/2408 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12595 event pairs, 1132 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 4781. Up to 2286 conditions per place. [2022-12-13 11:53:51,890 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 35 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 11:53:51,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 167 flow [2022-12-13 11:53:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2022-12-13 11:53:51,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4605009633911368 [2022-12-13 11:53:51,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2022-12-13 11:53:51,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2022-12-13 11:53:51,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:51,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2022-12-13 11:53:51,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:51,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:51,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:51,901 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 99 flow. Second operand 3 states and 478 transitions. [2022-12-13 11:53:51,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 167 flow [2022-12-13 11:53:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:51,903 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 96 flow [2022-12-13 11:53:51,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-13 11:53:51,904 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2022-12-13 11:53:51,904 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 96 flow [2022-12-13 11:53:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:51,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:51,905 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:53:51,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-13 11:53:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:52,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 703668, now seen corresponding path program 1 times [2022-12-13 11:53:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:52,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111067557] [2022-12-13 11:53:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:52,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:52,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:52,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 11:53:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:53:52,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:52,307 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:53:52,308 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:53:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:52,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:53:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:52,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:52,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111067557] [2022-12-13 11:53:52,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111067557] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:53:52,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:53:52,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 11:53:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037774478] [2022-12-13 11:53:52,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:53:52,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:53:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:53:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:53:53,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 346 [2022-12-13 11:53:53,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:53,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:53,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 346 [2022-12-13 11:53:53,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:53,805 INFO L130 PetriNetUnfolder]: 2406/3615 cut-off events. [2022-12-13 11:53:53,805 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:53:53,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 3615 events. 2406/3615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 20100 event pairs, 1698 based on Foata normal form. 0/1850 useless extension candidates. Maximal degree in co-relation 7180. Up to 1144 conditions per place. [2022-12-13 11:53:53,816 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 98 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2022-12-13 11:53:53,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 108 transitions, 462 flow [2022-12-13 11:53:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:53:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:53:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 960 transitions. [2022-12-13 11:53:53,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4624277456647399 [2022-12-13 11:53:53,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 960 transitions. [2022-12-13 11:53:53,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 960 transitions. [2022-12-13 11:53:53,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:53,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 960 transitions. [2022-12-13 11:53:53,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:53,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:53,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:53,823 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 96 flow. Second operand 6 states and 960 transitions. [2022-12-13 11:53:53,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 108 transitions, 462 flow [2022-12-13 11:53:53,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 108 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:53,824 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 149 flow [2022-12-13 11:53:53,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2022-12-13 11:53:53,825 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-12-13 11:53:53,825 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 149 flow [2022-12-13 11:53:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:53,825 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:53,825 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:53:53,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 11:53:54,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:54,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash 21852183, now seen corresponding path program 1 times [2022-12-13 11:53:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782349942] [2022-12-13 11:53:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:54,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:54,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:54,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:54,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 11:53:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:54,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:53:54,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:54,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:53:54,214 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 11:53:54,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-13 11:53:54,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-12-13 11:53:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:54,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:54,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:54,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782349942] [2022-12-13 11:53:54,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782349942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:54,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:54,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256705764] [2022-12-13 11:53:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:54,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:54,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 11:53:54,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:54,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:54,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 11:53:54,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:54,744 INFO L130 PetriNetUnfolder]: 2334/3489 cut-off events. [2022-12-13 11:53:54,744 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:53:54,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 3489 events. 2334/3489 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 19439 event pairs, 1638 based on Foata normal form. 0/1809 useless extension candidates. Maximal degree in co-relation 6949. Up to 3306 conditions per place. [2022-12-13 11:53:54,753 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 11:53:54,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 223 flow [2022-12-13 11:53:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2022-12-13 11:53:54,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4614643545279383 [2022-12-13 11:53:54,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2022-12-13 11:53:54,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2022-12-13 11:53:54,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:54,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2022-12-13 11:53:54,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:54,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:54,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:54,758 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 149 flow. Second operand 3 states and 479 transitions. [2022-12-13 11:53:54,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 223 flow [2022-12-13 11:53:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 213 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:54,759 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 137 flow [2022-12-13 11:53:54,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-12-13 11:53:54,759 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-12-13 11:53:54,759 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 137 flow [2022-12-13 11:53:54,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:54,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:54,759 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:53:54,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:53:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:54,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 21852182, now seen corresponding path program 1 times [2022-12-13 11:53:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:54,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487576370] [2022-12-13 11:53:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:54,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:54,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:54,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:54,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 11:53:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:55,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:53:55,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:55,153 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-12-13 11:53:55,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-12-13 11:53:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:55,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:55,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:55,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487576370] [2022-12-13 11:53:55,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487576370] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:55,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:55,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:53:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47468220] [2022-12-13 11:53:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:55,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:53:55,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:53:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:53:55,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 346 [2022-12-13 11:53:55,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:55,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:55,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 346 [2022-12-13 11:53:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:55,688 INFO L130 PetriNetUnfolder]: 2262/3363 cut-off events. [2022-12-13 11:53:55,688 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 11:53:55,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6709 conditions, 3363 events. 2262/3363 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 18628 event pairs, 1578 based on Foata normal form. 0/1773 useless extension candidates. Maximal degree in co-relation 6693. Up to 3180 conditions per place. [2022-12-13 11:53:55,699 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 36 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-12-13 11:53:55,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 207 flow [2022-12-13 11:53:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:53:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:53:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2022-12-13 11:53:55,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45664739884393063 [2022-12-13 11:53:55,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2022-12-13 11:53:55,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2022-12-13 11:53:55,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:55,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2022-12-13 11:53:55,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:55,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:55,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:55,703 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 137 flow. Second operand 3 states and 474 transitions. [2022-12-13 11:53:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 207 flow [2022-12-13 11:53:55,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:55,704 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 134 flow [2022-12-13 11:53:55,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 11:53:55,704 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2022-12-13 11:53:55,704 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 134 flow [2022-12-13 11:53:55,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:55,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:55,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:53:55,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 11:53:55,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:55,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 677412654, now seen corresponding path program 1 times [2022-12-13 11:53:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:55,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885531781] [2022-12-13 11:53:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:55,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:55,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:55,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:55,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 11:53:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:53:55,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:55,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:53:55,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:55,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885531781] [2022-12-13 11:53:55,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885531781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:55,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:55,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:53:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356772679] [2022-12-13 11:53:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:55,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:53:55,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:53:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:53:56,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 11:53:56,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:56,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:56,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 11:53:56,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:56,464 INFO L130 PetriNetUnfolder]: 1628/2466 cut-off events. [2022-12-13 11:53:56,465 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 11:53:56,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4946 conditions, 2466 events. 1628/2466 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13305 event pairs, 1171 based on Foata normal form. 26/1385 useless extension candidates. Maximal degree in co-relation 4929. Up to 2123 conditions per place. [2022-12-13 11:53:56,473 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 56 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2022-12-13 11:53:56,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 306 flow [2022-12-13 11:53:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:53:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:53:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2022-12-13 11:53:56,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47109826589595377 [2022-12-13 11:53:56,475 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2022-12-13 11:53:56,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2022-12-13 11:53:56,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:53:56,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2022-12-13 11:53:56,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:56,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:56,478 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:56,478 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 134 flow. Second operand 4 states and 652 transitions. [2022-12-13 11:53:56,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 306 flow [2022-12-13 11:53:56,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:53:56,479 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 163 flow [2022-12-13 11:53:56,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-12-13 11:53:56,479 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-12-13 11:53:56,479 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 163 flow [2022-12-13 11:53:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:56,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:56,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:53:56,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 11:53:56,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:56,680 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:53:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash -507667456, now seen corresponding path program 1 times [2022-12-13 11:53:56,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:53:56,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974423627] [2022-12-13 11:53:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:56,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:53:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:53:56,682 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:53:56,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 11:53:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:56,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:53:56,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:53:56,831 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:53:56,831 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:53:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:56,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:53:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:57,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:53:57,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974423627] [2022-12-13 11:53:57,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974423627] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:53:57,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:53:57,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 11:53:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056231066] [2022-12-13 11:53:57,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:53:57,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:53:57,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:53:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:53:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:54:01,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 346 [2022-12-13 11:54:01,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 163 flow. Second operand has 8 states, 8 states have (on average 139.25) internal successors, (1114), 8 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:01,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:01,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 346 [2022-12-13 11:54:01,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:06,418 INFO L130 PetriNetUnfolder]: 1888/2893 cut-off events. [2022-12-13 11:54:06,419 INFO L131 PetriNetUnfolder]: For 374/374 co-relation queries the response was YES. [2022-12-13 11:54:06,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6617 conditions, 2893 events. 1888/2893 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 15825 event pairs, 1361 based on Foata normal form. 0/2104 useless extension candidates. Maximal degree in co-relation 6597. Up to 1057 conditions per place. [2022-12-13 11:54:06,429 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 99 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2022-12-13 11:54:06,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 567 flow [2022-12-13 11:54:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 11:54:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 11:54:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1494 transitions. [2022-12-13 11:54:06,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43179190751445085 [2022-12-13 11:54:06,435 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1494 transitions. [2022-12-13 11:54:06,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1494 transitions. [2022-12-13 11:54:06,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:06,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1494 transitions. [2022-12-13 11:54:06,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.4) internal successors, (1494), 10 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:06,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:06,444 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:06,445 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 163 flow. Second operand 10 states and 1494 transitions. [2022-12-13 11:54:06,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 567 flow [2022-12-13 11:54:06,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 557 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 11:54:06,448 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 194 flow [2022-12-13 11:54:06,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-12-13 11:54:06,449 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2022-12-13 11:54:06,449 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 194 flow [2022-12-13 11:54:06,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.25) internal successors, (1114), 8 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:06,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:06,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:54:06,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 11:54:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:06,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash -507667457, now seen corresponding path program 1 times [2022-12-13 11:54:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:06,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942220833] [2022-12-13 11:54:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:06,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:06,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:06,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 11:54:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:06,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:54:06,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:06,779 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-12-13 11:54:06,779 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-12-13 11:54:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:54:06,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:06,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:06,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942220833] [2022-12-13 11:54:06,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942220833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:06,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:06,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190247086] [2022-12-13 11:54:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:06,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:54:06,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 346 [2022-12-13 11:54:06,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:06,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:06,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 346 [2022-12-13 11:54:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:07,208 INFO L130 PetriNetUnfolder]: 1285/2064 cut-off events. [2022-12-13 11:54:07,208 INFO L131 PetriNetUnfolder]: For 745/745 co-relation queries the response was YES. [2022-12-13 11:54:07,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 2064 events. 1285/2064 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10914 event pairs, 921 based on Foata normal form. 214/1882 useless extension candidates. Maximal degree in co-relation 4642. Up to 1845 conditions per place. [2022-12-13 11:54:07,214 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 31 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2022-12-13 11:54:07,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 40 transitions, 260 flow [2022-12-13 11:54:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:54:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:54:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2022-12-13 11:54:07,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44147398843930635 [2022-12-13 11:54:07,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2022-12-13 11:54:07,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2022-12-13 11:54:07,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:07,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2022-12-13 11:54:07,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,221 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 194 flow. Second operand 4 states and 611 transitions. [2022-12-13 11:54:07,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 40 transitions, 260 flow [2022-12-13 11:54:07,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 40 transitions, 210 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-13 11:54:07,224 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 148 flow [2022-12-13 11:54:07,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2022-12-13 11:54:07,224 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2022-12-13 11:54:07,224 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 148 flow [2022-12-13 11:54:07,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:07,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:54:07,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 11:54:07,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:07,426 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -474874267, now seen corresponding path program 1 times [2022-12-13 11:54:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:07,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189744760] [2022-12-13 11:54:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:07,432 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:07,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 11:54:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:07,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:54:07,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:07,646 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-12-13 11:54:07,646 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-12-13 11:54:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:07,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:07,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189744760] [2022-12-13 11:54:07,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189744760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:07,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:07,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:07,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643512311] [2022-12-13 11:54:07,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:07,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:07,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2022-12-13 11:54:07,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:07,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2022-12-13 11:54:07,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:07,959 INFO L130 PetriNetUnfolder]: 1137/1829 cut-off events. [2022-12-13 11:54:07,959 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2022-12-13 11:54:07,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 1829 events. 1137/1829 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9468 event pairs, 817 based on Foata normal form. 0/1536 useless extension candidates. Maximal degree in co-relation 4108. Up to 1643 conditions per place. [2022-12-13 11:54:07,964 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 34 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 11:54:07,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 214 flow [2022-12-13 11:54:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2022-12-13 11:54:07,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4441233140655106 [2022-12-13 11:54:07,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2022-12-13 11:54:07,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2022-12-13 11:54:07,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:07,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2022-12-13 11:54:07,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,968 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 148 flow. Second operand 3 states and 461 transitions. [2022-12-13 11:54:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 214 flow [2022-12-13 11:54:07,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 38 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:54:07,969 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 139 flow [2022-12-13 11:54:07,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2022-12-13 11:54:07,969 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-12-13 11:54:07,969 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 139 flow [2022-12-13 11:54:07,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:07,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:07,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:54:07,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:08,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:08,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:08,172 INFO L85 PathProgramCache]: Analyzing trace with hash -474874266, now seen corresponding path program 1 times [2022-12-13 11:54:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:08,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977763069] [2022-12-13 11:54:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:08,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:08,176 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:08,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 11:54:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:08,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:54:08,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:54:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:54:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:54:08,323 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 11:54:08,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-12-13 11:54:08,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 11:54:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:08,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:08,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977763069] [2022-12-13 11:54:08,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977763069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:08,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:08,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889291643] [2022-12-13 11:54:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:08,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 11:54:08,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:08,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 11:54:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:08,623 INFO L130 PetriNetUnfolder]: 989/1594 cut-off events. [2022-12-13 11:54:08,623 INFO L131 PetriNetUnfolder]: For 522/522 co-relation queries the response was YES. [2022-12-13 11:54:08,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1594 events. 989/1594 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7987 event pairs, 713 based on Foata normal form. 0/1404 useless extension candidates. Maximal degree in co-relation 3593. Up to 1434 conditions per place. [2022-12-13 11:54:08,627 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 32 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 11:54:08,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 36 transitions, 201 flow [2022-12-13 11:54:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-12-13 11:54:08,629 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45375722543352603 [2022-12-13 11:54:08,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-12-13 11:54:08,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-12-13 11:54:08,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:08,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-12-13 11:54:08,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,631 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 139 flow. Second operand 3 states and 471 transitions. [2022-12-13 11:54:08,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 36 transitions, 201 flow [2022-12-13 11:54:08,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 36 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:08,632 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 136 flow [2022-12-13 11:54:08,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2022-12-13 11:54:08,633 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-12-13 11:54:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 136 flow [2022-12-13 11:54:08,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:08,633 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:54:08,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:08,835 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -508755002, now seen corresponding path program 2 times [2022-12-13 11:54:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:08,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300901479] [2022-12-13 11:54:08,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:08,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:08,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:08,841 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:08,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 11:54:08,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:54:08,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:08,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:54:08,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:09,075 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:54:09,075 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:54:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:09,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:09,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:09,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300901479] [2022-12-13 11:54:09,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300901479] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:09,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:54:09,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 11:54:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998064143] [2022-12-13 11:54:09,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:54:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:54:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:54:12,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 346 [2022-12-13 11:54:12,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 136 flow. Second operand has 12 states, 12 states have (on average 144.0) internal successors, (1728), 12 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:12,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:12,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 346 [2022-12-13 11:54:12,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:16,685 INFO L130 PetriNetUnfolder]: 3110/4831 cut-off events. [2022-12-13 11:54:16,685 INFO L131 PetriNetUnfolder]: For 3353/3353 co-relation queries the response was YES. [2022-12-13 11:54:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12023 conditions, 4831 events. 3110/4831 cut-off events. For 3353/3353 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27546 event pairs, 2265 based on Foata normal form. 6/4285 useless extension candidates. Maximal degree in co-relation 12004. Up to 1141 conditions per place. [2022-12-13 11:54:16,698 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 211 selfloop transitions, 12 changer transitions 1/227 dead transitions. [2022-12-13 11:54:16,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 227 transitions, 1160 flow [2022-12-13 11:54:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:54:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 11:54:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1946 transitions. [2022-12-13 11:54:16,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4686897880539499 [2022-12-13 11:54:16,702 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1946 transitions. [2022-12-13 11:54:16,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1946 transitions. [2022-12-13 11:54:16,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:16,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1946 transitions. [2022-12-13 11:54:16,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 162.16666666666666) internal successors, (1946), 12 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:16,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:16,708 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:16,708 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 136 flow. Second operand 12 states and 1946 transitions. [2022-12-13 11:54:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 227 transitions, 1160 flow [2022-12-13 11:54:16,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 227 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:16,713 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 233 flow [2022-12-13 11:54:16,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2022-12-13 11:54:16,713 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2022-12-13 11:54:16,713 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 233 flow [2022-12-13 11:54:16,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.0) internal successors, (1728), 12 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:16,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:16,714 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 11:54:16,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 11:54:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:16,915 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 623518638, now seen corresponding path program 2 times [2022-12-13 11:54:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725561391] [2022-12-13 11:54:16,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:16,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:16,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:16,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 11:54:17,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:54:17,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:17,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:54:17,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:17,119 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:54:17,120 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:54:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:54:17,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:17,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:17,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725561391] [2022-12-13 11:54:17,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725561391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:17,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:17,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946898861] [2022-12-13 11:54:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:54:17,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2022-12-13 11:54:17,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:17,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:17,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2022-12-13 11:54:17,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:17,755 INFO L130 PetriNetUnfolder]: 2318/3769 cut-off events. [2022-12-13 11:54:17,755 INFO L131 PetriNetUnfolder]: For 2553/2553 co-relation queries the response was YES. [2022-12-13 11:54:17,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7880 conditions, 3769 events. 2318/3769 cut-off events. For 2553/2553 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21476 event pairs, 1641 based on Foata normal form. 468/3748 useless extension candidates. Maximal degree in co-relation 7853. Up to 3314 conditions per place. [2022-12-13 11:54:17,766 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2022-12-13 11:54:17,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 41 transitions, 293 flow [2022-12-13 11:54:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:54:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:54:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 601 transitions. [2022-12-13 11:54:17,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4342485549132948 [2022-12-13 11:54:17,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 601 transitions. [2022-12-13 11:54:17,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 601 transitions. [2022-12-13 11:54:17,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:17,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 601 transitions. [2022-12-13 11:54:17,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:17,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:17,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:17,771 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 233 flow. Second operand 4 states and 601 transitions. [2022-12-13 11:54:17,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 41 transitions, 293 flow [2022-12-13 11:54:17,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 41 transitions, 268 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 11:54:17,773 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 206 flow [2022-12-13 11:54:17,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2022-12-13 11:54:17,773 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2022-12-13 11:54:17,774 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 206 flow [2022-12-13 11:54:17,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:17,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:17,774 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 11:54:17,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:17,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1473953030, now seen corresponding path program 3 times [2022-12-13 11:54:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:17,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517890582] [2022-12-13 11:54:17,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:54:17,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:17,978 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:17,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 11:54:18,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 11:54:18,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:18,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:54:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:18,288 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:54:18,288 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:54:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:18,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:21,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517890582] [2022-12-13 11:54:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517890582] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:21,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:54:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 11:54:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94778480] [2022-12-13 11:54:21,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:21,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:54:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:54:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:54:34,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 346 [2022-12-13 11:54:34,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 206 flow. Second operand has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:34,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:34,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 346 [2022-12-13 11:54:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:54,308 INFO L130 PetriNetUnfolder]: 5030/8053 cut-off events. [2022-12-13 11:54:54,308 INFO L131 PetriNetUnfolder]: For 1250/1250 co-relation queries the response was YES. [2022-12-13 11:54:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 8053 events. 5030/8053 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 46734 event pairs, 3705 based on Foata normal form. 12/6973 useless extension candidates. Maximal degree in co-relation 17322. Up to 1135 conditions per place. [2022-12-13 11:54:54,330 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 439 selfloop transitions, 24 changer transitions 1/467 dead transitions. [2022-12-13 11:54:54,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 467 transitions, 2400 flow [2022-12-13 11:54:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:54:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 11:54:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3908 transitions. [2022-12-13 11:54:54,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.470616570327553 [2022-12-13 11:54:54,335 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3908 transitions. [2022-12-13 11:54:54,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3908 transitions. [2022-12-13 11:54:54,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:54,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3908 transitions. [2022-12-13 11:54:54,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 162.83333333333334) internal successors, (3908), 24 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:54,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 346.0) internal successors, (8650), 25 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:54,348 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 346.0) internal successors, (8650), 25 states have internal predecessors, (8650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:54,348 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 206 flow. Second operand 24 states and 3908 transitions. [2022-12-13 11:54:54,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 467 transitions, 2400 flow [2022-12-13 11:54:54,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 467 transitions, 2375 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:54:54,354 INFO L231 Difference]: Finished difference. Result has 99 places, 54 transitions, 385 flow [2022-12-13 11:54:54,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=385, PETRI_PLACES=99, PETRI_TRANSITIONS=54} [2022-12-13 11:54:54,354 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2022-12-13 11:54:54,354 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 54 transitions, 385 flow [2022-12-13 11:54:54,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 144.0) internal successors, (3456), 24 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:54,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:54,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:54,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 11:54:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:54,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1446758723, now seen corresponding path program 1 times [2022-12-13 11:54:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:54,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172375292] [2022-12-13 11:54:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:54,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:54,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:54,561 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:54,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 11:54:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:54,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:54:54,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:54,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:54,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172375292] [2022-12-13 11:54:54,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172375292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:54,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:54,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:54:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344951569] [2022-12-13 11:54:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:54:54,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 11:54:54,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 54 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:54,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:54,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 11:54:54,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:55,691 INFO L130 PetriNetUnfolder]: 5044/8395 cut-off events. [2022-12-13 11:54:55,691 INFO L131 PetriNetUnfolder]: For 1014/1014 co-relation queries the response was YES. [2022-12-13 11:54:55,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18145 conditions, 8395 events. 5044/8395 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 53692 event pairs, 304 based on Foata normal form. 610/7894 useless extension candidates. Maximal degree in co-relation 18106. Up to 2744 conditions per place. [2022-12-13 11:54:55,717 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 73 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2022-12-13 11:54:55,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 80 transitions, 607 flow [2022-12-13 11:54:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:54:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:54:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2022-12-13 11:54:55,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4578034682080925 [2022-12-13 11:54:55,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2022-12-13 11:54:55,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2022-12-13 11:54:55,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:55,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2022-12-13 11:54:55,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,722 INFO L175 Difference]: Start difference. First operand has 99 places, 54 transitions, 385 flow. Second operand 5 states and 792 transitions. [2022-12-13 11:54:55,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 80 transitions, 607 flow [2022-12-13 11:54:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 80 transitions, 556 flow, removed 13 selfloop flow, removed 11 redundant places. [2022-12-13 11:54:55,730 INFO L231 Difference]: Finished difference. Result has 95 places, 57 transitions, 365 flow [2022-12-13 11:54:55,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=95, PETRI_TRANSITIONS=57} [2022-12-13 11:54:55,730 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2022-12-13 11:54:55,730 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 57 transitions, 365 flow [2022-12-13 11:54:55,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:55,730 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:55,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 11:54:55,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:55,932 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1356454735, now seen corresponding path program 2 times [2022-12-13 11:54:55,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:55,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847874070] [2022-12-13 11:54:55,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:54:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:55,937 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:55,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 11:54:56,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:54:56,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:54:56,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 11:54:56,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:56,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:56,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:56,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847874070] [2022-12-13 11:54:56,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847874070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:56,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:56,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:54:56,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645116446] [2022-12-13 11:54:56,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:56,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:54:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:54:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:54:56,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2022-12-13 11:54:56,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 57 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:56,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2022-12-13 11:54:56,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:58,111 INFO L130 PetriNetUnfolder]: 10639/16343 cut-off events. [2022-12-13 11:54:58,112 INFO L131 PetriNetUnfolder]: For 5594/5594 co-relation queries the response was YES. [2022-12-13 11:54:58,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40490 conditions, 16343 events. 10639/16343 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 102678 event pairs, 739 based on Foata normal form. 408/14414 useless extension candidates. Maximal degree in co-relation 40447. Up to 5960 conditions per place. [2022-12-13 11:54:58,173 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 77 selfloop transitions, 11 changer transitions 5/94 dead transitions. [2022-12-13 11:54:58,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 653 flow [2022-12-13 11:54:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:54:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:54:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1073 transitions. [2022-12-13 11:54:58,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4430222956234517 [2022-12-13 11:54:58,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1073 transitions. [2022-12-13 11:54:58,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1073 transitions. [2022-12-13 11:54:58,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:58,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1073 transitions. [2022-12-13 11:54:58,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,181 INFO L175 Difference]: Start difference. First operand has 95 places, 57 transitions, 365 flow. Second operand 7 states and 1073 transitions. [2022-12-13 11:54:58,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 653 flow [2022-12-13 11:54:58,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:58,195 INFO L231 Difference]: Finished difference. Result has 102 places, 55 transitions, 381 flow [2022-12-13 11:54:58,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=102, PETRI_TRANSITIONS=55} [2022-12-13 11:54:58,196 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2022-12-13 11:54:58,196 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 55 transitions, 381 flow [2022-12-13 11:54:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:58,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:54:58,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 11:54:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:58,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:54:58,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1378096251, now seen corresponding path program 1 times [2022-12-13 11:54:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:58,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852935533] [2022-12-13 11:54:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:58,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:58,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:58,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:58,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 11:54:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:58,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:54:58,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:54:58,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:58,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:58,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852935533] [2022-12-13 11:54:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852935533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:58,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:58,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:58,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349243521] [2022-12-13 11:54:58,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:58,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2022-12-13 11:54:58,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 55 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:58,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2022-12-13 11:54:58,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:59,744 INFO L130 PetriNetUnfolder]: 4083/7667 cut-off events. [2022-12-13 11:54:59,745 INFO L131 PetriNetUnfolder]: For 11213/11213 co-relation queries the response was YES. [2022-12-13 11:54:59,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21818 conditions, 7667 events. 4083/7667 cut-off events. For 11213/11213 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 53254 event pairs, 1740 based on Foata normal form. 280/7067 useless extension candidates. Maximal degree in co-relation 21772. Up to 5261 conditions per place. [2022-12-13 11:54:59,775 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 56 selfloop transitions, 2 changer transitions 3/66 dead transitions. [2022-12-13 11:54:59,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 66 transitions, 537 flow [2022-12-13 11:54:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 11:54:59,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46724470134874757 [2022-12-13 11:54:59,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 11:54:59,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 11:54:59,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:59,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 11:54:59,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,778 INFO L175 Difference]: Start difference. First operand has 102 places, 55 transitions, 381 flow. Second operand 3 states and 485 transitions. [2022-12-13 11:54:59,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 66 transitions, 537 flow [2022-12-13 11:54:59,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 66 transitions, 505 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-12-13 11:54:59,809 INFO L231 Difference]: Finished difference. Result has 95 places, 56 transitions, 367 flow [2022-12-13 11:54:59,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=95, PETRI_TRANSITIONS=56} [2022-12-13 11:54:59,810 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2022-12-13 11:54:59,810 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 56 transitions, 367 flow [2022-12-13 11:54:59,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:59,810 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1] [2022-12-13 11:54:59,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 11:55:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,011 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:55:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1036672902, now seen corresponding path program 4 times [2022-12-13 11:55:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:00,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237714339] [2022-12-13 11:55:00,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:55:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:00,016 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:00,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 11:55:00,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:55:00,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 11:55:00,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:00,295 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-12-13 11:55:00,295 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-12-13 11:55:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:01,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:12,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:12,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237714339] [2022-12-13 11:55:12,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237714339] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:12,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:12,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-12-13 11:55:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518985359] [2022-12-13 11:55:12,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:12,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 11:55:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 11:55:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 11:56:10,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 346 [2022-12-13 11:56:10,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 56 transitions, 367 flow. Second operand has 48 states, 48 states have (on average 144.0) internal successors, (6912), 48 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:10,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:10,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 346 [2022-12-13 11:56:10,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:29,373 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:56:40,440 WARN L233 SmtUtils]: Spent 9.45s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:56:53,739 WARN L233 SmtUtils]: Spent 11.71s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:57:04,237 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:57:13,973 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:57:24,173 WARN L233 SmtUtils]: Spent 8.45s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:57:32,686 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:57:41,713 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:58:32,459 INFO L130 PetriNetUnfolder]: 9182/17240 cut-off events. [2022-12-13 11:58:32,459 INFO L131 PetriNetUnfolder]: For 21771/21771 co-relation queries the response was YES. [2022-12-13 11:58:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47762 conditions, 17240 events. 9182/17240 cut-off events. For 21771/21771 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 123842 event pairs, 7110 based on Foata normal form. 24/15410 useless extension candidates. Maximal degree in co-relation 47718. Up to 3691 conditions per place. [2022-12-13 11:58:32,535 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 947 selfloop transitions, 48 changer transitions 0/1000 dead transitions. [2022-12-13 11:58:32,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 1000 transitions, 6094 flow [2022-12-13 11:58:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:58:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 11:58:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7838 transitions. [2022-12-13 11:58:32,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4719412331406551 [2022-12-13 11:58:32,543 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7838 transitions. [2022-12-13 11:58:32,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7838 transitions. [2022-12-13 11:58:32,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:58:32,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7838 transitions. [2022-12-13 11:58:32,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 163.29166666666666) internal successors, (7838), 48 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:32,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 346.0) internal successors, (16954), 49 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:32,563 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 346.0) internal successors, (16954), 49 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:32,564 INFO L175 Difference]: Start difference. First operand has 95 places, 56 transitions, 367 flow. Second operand 48 states and 7838 transitions. [2022-12-13 11:58:32,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 1000 transitions, 6094 flow [2022-12-13 11:58:32,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 1000 transitions, 5778 flow, removed 135 selfloop flow, removed 2 redundant places. [2022-12-13 11:58:32,656 INFO L231 Difference]: Finished difference. Result has 165 places, 81 transitions, 717 flow [2022-12-13 11:58:32,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=717, PETRI_PLACES=165, PETRI_TRANSITIONS=81} [2022-12-13 11:58:32,657 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 114 predicate places. [2022-12-13 11:58:32,657 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 81 transitions, 717 flow [2022-12-13 11:58:32,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 144.0) internal successors, (6912), 48 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:32,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:58:32,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:32,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 11:58:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:58:32,859 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:58:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash 194505732, now seen corresponding path program 1 times [2022-12-13 11:58:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:58:32,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008694511] [2022-12-13 11:58:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:58:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:58:32,866 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:58:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 11:58:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:58:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:33,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:58:33,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 11:58:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:58:33,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:33,754 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 11:58:33,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2022-12-13 11:58:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:58:36,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:58:36,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008694511] [2022-12-13 11:58:36,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008694511] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:36,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:58:36,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-12-13 11:58:36,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290457392] [2022-12-13 11:58:36,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:36,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:58:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:58:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:58:36,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:58:38,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2022-12-13 11:58:38,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 81 transitions, 717 flow. Second operand has 20 states, 20 states have (on average 130.2) internal successors, (2604), 20 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:38,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:58:38,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2022-12-13 11:58:38,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:58:50,962 INFO L130 PetriNetUnfolder]: 29972/50810 cut-off events. [2022-12-13 11:58:50,963 INFO L131 PetriNetUnfolder]: For 27174/27174 co-relation queries the response was YES. [2022-12-13 11:58:51,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134128 conditions, 50810 events. 29972/50810 cut-off events. For 27174/27174 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 376544 event pairs, 360 based on Foata normal form. 1080/47705 useless extension candidates. Maximal degree in co-relation 134059. Up to 11295 conditions per place. [2022-12-13 11:58:51,390 INFO L137 encePairwiseOnDemand]: 332/346 looper letters, 196 selfloop transitions, 55 changer transitions 12/263 dead transitions. [2022-12-13 11:58:51,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 263 transitions, 1764 flow [2022-12-13 11:58:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 11:58:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 11:58:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3667 transitions. [2022-12-13 11:58:51,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39252836651680584 [2022-12-13 11:58:51,398 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3667 transitions. [2022-12-13 11:58:51,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3667 transitions. [2022-12-13 11:58:51,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:58:51,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3667 transitions. [2022-12-13 11:58:51,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 135.8148148148148) internal successors, (3667), 27 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:51,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 346.0) internal successors, (9688), 28 states have internal predecessors, (9688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:51,414 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 346.0) internal successors, (9688), 28 states have internal predecessors, (9688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:51,414 INFO L175 Difference]: Start difference. First operand has 165 places, 81 transitions, 717 flow. Second operand 27 states and 3667 transitions. [2022-12-13 11:58:51,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 263 transitions, 1764 flow [2022-12-13 11:58:51,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 263 transitions, 1668 flow, removed 25 selfloop flow, removed 22 redundant places. [2022-12-13 11:58:51,557 INFO L231 Difference]: Finished difference. Result has 180 places, 129 transitions, 990 flow [2022-12-13 11:58:51,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=990, PETRI_PLACES=180, PETRI_TRANSITIONS=129} [2022-12-13 11:58:51,558 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 129 predicate places. [2022-12-13 11:58:51,558 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 129 transitions, 990 flow [2022-12-13 11:58:51,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 130.2) internal successors, (2604), 20 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:58:51,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:58:51,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:51,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 11:58:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:58:51,760 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:58:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1809996872, now seen corresponding path program 2 times [2022-12-13 11:58:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:58:51,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495695127] [2022-12-13 11:58:51,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:58:51,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:58:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:58:51,766 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:58:51,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 11:58:51,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:58:51,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:51,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 11:58:51,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:51,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 11:58:52,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 11:58:52,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:58:52,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 11:58:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:58:52,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:53,204 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_745 (Array (_ BitVec 32) (_ BitVec 8)))) (bvsle (bvadd (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_745) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset (_ bv3 32) .cse1)) (select .cse0 (bvadd c_~queue~0.offset (_ bv2 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv1 32)))) (select .cse0 (bvadd c_~queue~0.offset .cse1)))) c_~d~0) c_~W~0)) is different from false [2022-12-13 11:58:53,550 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 11:58:53,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 117 [2022-12-13 11:58:53,566 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:58:53,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 11 [2022-12-13 11:59:02,596 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 127 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 11:59:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:59:05,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:59:05,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495695127] [2022-12-13 11:59:05,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495695127] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:05,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:59:05,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2022-12-13 11:59:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000533396] [2022-12-13 11:59:05,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:59:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:59:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:59:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=344, Unknown=1, NotChecked=38, Total=462 [2022-12-13 11:59:06,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 346 [2022-12-13 11:59:06,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 129 transitions, 990 flow. Second operand has 22 states, 22 states have (on average 110.27272727272727) internal successors, (2426), 22 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:59:06,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:59:06,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 346 [2022-12-13 11:59:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:59:08,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:59:41,684 INFO L130 PetriNetUnfolder]: 52847/91131 cut-off events. [2022-12-13 11:59:41,684 INFO L131 PetriNetUnfolder]: For 183664/183664 co-relation queries the response was YES. [2022-12-13 11:59:42,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339227 conditions, 91131 events. 52847/91131 cut-off events. For 183664/183664 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 761039 event pairs, 1540 based on Foata normal form. 264/91395 useless extension candidates. Maximal degree in co-relation 339146. Up to 21077 conditions per place. [2022-12-13 11:59:42,726 INFO L137 encePairwiseOnDemand]: 329/346 looper letters, 210 selfloop transitions, 129 changer transitions 68/407 dead transitions. [2022-12-13 11:59:42,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 407 transitions, 3275 flow [2022-12-13 11:59:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 11:59:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 11:59:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3164 transitions. [2022-12-13 11:59:42,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3386855063155641 [2022-12-13 11:59:42,731 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3164 transitions. [2022-12-13 11:59:42,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3164 transitions. [2022-12-13 11:59:42,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:59:42,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3164 transitions. [2022-12-13 11:59:42,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 117.18518518518519) internal successors, (3164), 27 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:59:42,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 346.0) internal successors, (9688), 28 states have internal predecessors, (9688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:59:42,741 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 346.0) internal successors, (9688), 28 states have internal predecessors, (9688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:59:42,741 INFO L175 Difference]: Start difference. First operand has 180 places, 129 transitions, 990 flow. Second operand 27 states and 3164 transitions. [2022-12-13 11:59:42,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 407 transitions, 3275 flow [2022-12-13 11:59:59,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 407 transitions, 2991 flow, removed 80 selfloop flow, removed 9 redundant places. [2022-12-13 11:59:59,679 INFO L231 Difference]: Finished difference. Result has 209 places, 225 transitions, 1913 flow [2022-12-13 11:59:59,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1913, PETRI_PLACES=209, PETRI_TRANSITIONS=225} [2022-12-13 11:59:59,679 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 158 predicate places. [2022-12-13 11:59:59,679 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 225 transitions, 1913 flow [2022-12-13 11:59:59,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 110.27272727272727) internal successors, (2426), 22 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:59:59,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:59:59,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:59,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 11:59:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:59:59,881 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 11:59:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1250407166, now seen corresponding path program 3 times [2022-12-13 11:59:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:59:59,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458975355] [2022-12-13 11:59:59,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:59:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:59:59,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:59:59,886 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:59:59,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 12:00:00,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:00:00,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:00,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 12:00:00,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:00,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 163 [2022-12-13 12:00:00,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:00:00,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 12:00:00,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 12:00:01,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:00:01,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:00:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:00:01,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:02,794 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 12:00:02,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 435 treesize of output 378 [2022-12-13 12:00:02,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 106 [2022-12-13 12:00:02,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:00:02,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 158 [2022-12-13 12:00:14,565 WARN L233 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 136 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:00:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:00:16,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:00:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458975355] [2022-12-13 12:00:16,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458975355] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:16,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:00:16,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 12:00:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671480244] [2022-12-13 12:00:16,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:16,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:00:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:00:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:00:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=448, Unknown=5, NotChecked=0, Total=552 [2022-12-13 12:00:22,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:00:26,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 346 [2022-12-13 12:00:26,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 225 transitions, 1913 flow. Second operand has 24 states, 24 states have (on average 103.08333333333333) internal successors, (2474), 24 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:00:26,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:00:26,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 346 [2022-12-13 12:00:26,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:00:29,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:00:31,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 12:00:34,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:00:48,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:01:28,325 INFO L130 PetriNetUnfolder]: 74847/128487 cut-off events. [2022-12-13 12:01:28,325 INFO L131 PetriNetUnfolder]: For 497736/497736 co-relation queries the response was YES. [2022-12-13 12:01:29,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626425 conditions, 128487 events. 74847/128487 cut-off events. For 497736/497736 co-relation queries the response was YES. Maximal size of possible extension queue 1227. Compared 1113866 event pairs, 1892 based on Foata normal form. 264/128751 useless extension candidates. Maximal degree in co-relation 626336. Up to 31901 conditions per place. [2022-12-13 12:01:30,117 INFO L137 encePairwiseOnDemand]: 332/346 looper letters, 260 selfloop transitions, 194 changer transitions 81/535 dead transitions. [2022-12-13 12:01:30,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 535 transitions, 5453 flow [2022-12-13 12:01:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 12:01:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 12:01:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3413 transitions. [2022-12-13 12:01:30,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.31819876934551555 [2022-12-13 12:01:30,124 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3413 transitions. [2022-12-13 12:01:30,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3413 transitions. [2022-12-13 12:01:30,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:30,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3413 transitions. [2022-12-13 12:01:30,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 110.09677419354838) internal successors, (3413), 31 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:30,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 346.0) internal successors, (11072), 32 states have internal predecessors, (11072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:30,134 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 346.0) internal successors, (11072), 32 states have internal predecessors, (11072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:30,134 INFO L175 Difference]: Start difference. First operand has 209 places, 225 transitions, 1913 flow. Second operand 31 states and 3413 transitions. [2022-12-13 12:01:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 535 transitions, 5453 flow [2022-12-13 12:02:42,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 535 transitions, 4915 flow, removed 226 selfloop flow, removed 8 redundant places. [2022-12-13 12:02:42,753 INFO L231 Difference]: Finished difference. Result has 248 places, 311 transitions, 3154 flow [2022-12-13 12:02:42,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3154, PETRI_PLACES=248, PETRI_TRANSITIONS=311} [2022-12-13 12:02:42,754 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 197 predicate places. [2022-12-13 12:02:42,754 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 311 transitions, 3154 flow [2022-12-13 12:02:42,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 103.08333333333333) internal successors, (2474), 24 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:42,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:02:42,754 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:42,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 12:02:42,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:02:42,955 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 12:02:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash 289444821, now seen corresponding path program 4 times [2022-12-13 12:02:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:02:42,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31328617] [2022-12-13 12:02:42,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:02:42,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:02:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:02:42,961 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:02:42,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 12:02:43,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:02:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:43,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:02:43,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:02:43,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:02:43,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:02:43,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31328617] [2022-12-13 12:02:43,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31328617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:43,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:02:43,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 12:02:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166916213] [2022-12-13 12:02:43,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:43,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:02:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:02:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:02:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:02:44,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2022-12-13 12:02:44,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 311 transitions, 3154 flow. Second operand has 10 states, 10 states have (on average 147.5) internal successors, (1475), 10 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:44,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:02:44,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2022-12-13 12:02:44,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:03:04,520 INFO L130 PetriNetUnfolder]: 49281/88994 cut-off events. [2022-12-13 12:03:04,520 INFO L131 PetriNetUnfolder]: For 621731/622851 co-relation queries the response was YES. [2022-12-13 12:03:05,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508239 conditions, 88994 events. 49281/88994 cut-off events. For 621731/622851 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 793981 event pairs, 16538 based on Foata normal form. 424/88062 useless extension candidates. Maximal degree in co-relation 508136. Up to 75897 conditions per place. [2022-12-13 12:03:05,898 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 327 selfloop transitions, 13 changer transitions 30/420 dead transitions. [2022-12-13 12:03:05,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 420 transitions, 4911 flow [2022-12-13 12:03:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:03:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:03:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1205 transitions. [2022-12-13 12:03:05,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43533236994219654 [2022-12-13 12:03:05,902 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1205 transitions. [2022-12-13 12:03:05,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1205 transitions. [2022-12-13 12:03:05,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:03:05,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1205 transitions. [2022-12-13 12:03:05,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.625) internal successors, (1205), 8 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:05,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:05,905 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:05,905 INFO L175 Difference]: Start difference. First operand has 248 places, 311 transitions, 3154 flow. Second operand 8 states and 1205 transitions. [2022-12-13 12:03:05,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 420 transitions, 4911 flow [2022-12-13 12:04:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 420 transitions, 4435 flow, removed 116 selfloop flow, removed 10 redundant places. [2022-12-13 12:04:19,451 INFO L231 Difference]: Finished difference. Result has 247 places, 313 transitions, 2880 flow [2022-12-13 12:04:19,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2880, PETRI_PLACES=247, PETRI_TRANSITIONS=313} [2022-12-13 12:04:19,451 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 196 predicate places. [2022-12-13 12:04:19,451 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 313 transitions, 2880 flow [2022-12-13 12:04:19,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 147.5) internal successors, (1475), 10 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:19,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:04:19,452 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:19,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-12-13 12:04:19,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:04:19,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-12-13 12:04:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1794626153, now seen corresponding path program 5 times [2022-12-13 12:04:19,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:04:19,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997292752] [2022-12-13 12:04:19,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:04:19,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:04:19,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:04:19,660 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:04:19,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_834afd88-6711-471f-b8e3-431a5ab8eac8/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 12:04:20,143 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 12:04:20,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:04:20,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 12:04:20,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:20,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-13 12:04:21,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 12:04:21,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:04:21,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 19 [2022-12-13 12:04:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:04:21,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:23,151 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 12:04:23,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 117 [2022-12-13 12:04:23,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:04:23,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 11 [2022-12-13 12:04:36,089 WARN L233 SmtUtils]: Spent 11.78s on a formula simplification. DAG size of input: 130 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:04:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:04:41,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:04:41,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997292752] [2022-12-13 12:04:41,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997292752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:41,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:04:41,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2022-12-13 12:04:41,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951745214] [2022-12-13 12:04:41,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:41,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 12:04:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:04:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 12:04:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=654, Unknown=1, NotChecked=0, Total=756 [2022-12-13 12:04:45,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 346 [2022-12-13 12:04:45,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 313 transitions, 2880 flow. Second operand has 28 states, 28 states have (on average 95.85714285714286) internal successors, (2684), 28 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:45,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:04:45,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 346 [2022-12-13 12:04:45,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:05:13,186 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 97 DAG size of output: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:05:30,962 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 82 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:05:56,563 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:07:10,327 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 113 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:07:43,797 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 113 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)