./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:19:00,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:19:00,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:19:00,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:19:00,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:19:00,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:19:00,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:19:00,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:19:00,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:19:00,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:19:00,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:19:00,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:19:00,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:19:00,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:19:00,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:19:00,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:19:00,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:19:00,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:19:00,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:19:00,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:19:00,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:19:00,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:19:00,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:19:00,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:19:00,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:19:00,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:19:00,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:19:00,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:19:00,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:19:00,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:19:00,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:19:00,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:19:00,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:19:00,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:19:00,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:19:00,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:19:00,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:19:00,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:19:00,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:19:00,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:19:00,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:19:00,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:19:00,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:19:00,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:19:00,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:19:00,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:19:00,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:19:00,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:19:00,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:19:00,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:19:00,175 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:19:00,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:19:00,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:19:00,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:19:00,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:19:00,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:19:00,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:19:00,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:19:00,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:19:00,177 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:19:00,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:19:00,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:19:00,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:19:00,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:19:00,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:19:00,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:19:00,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:19:00,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:00,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:19:00,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:19:00,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:19:00,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:19:00,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:19:00,181 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:19:00,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:19:00,181 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 [2022-11-25 18:19:00,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:19:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:19:00,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:19:00,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:19:00,536 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:19:00,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-25 18:19:03,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:19:03,894 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:19:03,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-25 18:19:03,904 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/76fcc7114/092fee96d52a451e8f8192a7bafc9b82/FLAGf2425697d [2022-11-25 18:19:03,921 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/76fcc7114/092fee96d52a451e8f8192a7bafc9b82 [2022-11-25 18:19:03,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:19:03,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:19:03,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:03,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:19:03,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:19:03,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:03" (1/1) ... [2022-11-25 18:19:03,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18123c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:03, skipping insertion in model container [2022-11-25 18:19:03,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:03" (1/1) ... [2022-11-25 18:19:03,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:19:03,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:19:04,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:04,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:04,220 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-25 18:19:04,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:04,247 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-25 18:19:04,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38e0dd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:04, skipping insertion in model container [2022-11-25 18:19:04,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:04,249 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:19:04,251 INFO L158 Benchmark]: Toolchain (without parser) took 323.62ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 68.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:19:04,252 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:19:04,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.53ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 68.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:19:04,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 44.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.53ms. Allocated memory is still 123.7MB. Free memory was 78.9MB in the beginning and 68.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 145]: 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:19:06,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:19:06,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:19:06,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:19:06,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:19:06,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:19:06,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:19:06,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:19:06,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:19:06,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:19:06,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:19:06,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:19:06,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:19:06,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:19:06,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:19:06,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:19:06,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:19:06,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:19:06,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:19:06,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:19:06,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:19:06,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:19:06,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:19:06,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:19:06,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:19:06,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:19:06,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:19:06,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:19:06,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:19:06,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:19:06,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:19:06,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:19:06,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:19:06,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:19:06,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:19:06,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:19:06,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:19:06,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:19:06,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:19:06,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:19:06,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:19:06,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:19:06,872 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:19:06,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:19:06,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:19:06,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:19:06,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:19:06,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:19:06,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:19:06,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:19:06,875 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:19:06,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:19:06,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:19:06,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:19:06,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:19:06,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:19:06,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:19:06,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:19:06,877 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:19:06,877 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:19:06,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:19:06,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:19:06,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:19:06,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:19:06,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:19:06,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:19:06,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:19:06,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:19:06,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:19:06,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:06,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:19:06,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:19:06,885 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:19:06,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:19:06,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:19:06,886 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:19:06,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:19:06,886 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:19:06,887 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b834084fe1393c06cef2b14fb31f788537bd44a8744d5b4241cffc72e1d744 [2022-11-25 18:19:07,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:19:07,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:19:07,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:19:07,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:19:07,343 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:19:07,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-25 18:19:10,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:19:10,954 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:19:10,955 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2022-11-25 18:19:10,963 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/191c49237/01d86381b1c543d282e7a99e7846e058/FLAGd825158fe [2022-11-25 18:19:10,980 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/data/191c49237/01d86381b1c543d282e7a99e7846e058 [2022-11-25 18:19:10,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:19:10,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:19:10,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:10,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:19:10,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:19:10,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:10" (1/1) ... [2022-11-25 18:19:10,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6f14a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:10, skipping insertion in model container [2022-11-25 18:19:10,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:10" (1/1) ... [2022-11-25 18:19:11,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:19:11,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:19:11,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,317 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-25 18:19:11,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:11,366 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:19:11,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:19:11,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,431 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-25 18:19:11,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:11,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:19:11,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 18:19:11,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 18:19:11,508 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_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-11-25 18:19:11,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:11,546 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:19:11,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11 WrapperNode [2022-11-25 18:19:11,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:11,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:11,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:19:11,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:19:11,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,647 INFO L138 Inliner]: procedures = 29, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 283 [2022-11-25 18:19:11,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:11,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:19:11,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:19:11,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:19:11,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:19:11,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:19:11,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:19:11,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:19:11,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (1/1) ... [2022-11-25 18:19:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:11,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:11,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:19:11,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:19:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:19:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:19:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:19:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:19:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:19:11,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:19:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:19:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:19:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:19:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:19:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 18:19:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 18:19:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 18:19:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 18:19:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:19:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:19:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:19:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:19:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:19:11,916 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:19:12,074 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:19:12,075 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:19:13,069 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:19:13,393 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:19:13,393 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 18:19:13,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:13 BoogieIcfgContainer [2022-11-25 18:19:13,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:19:13,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:19:13,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:19:13,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:19:13,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:19:10" (1/3) ... [2022-11-25 18:19:13,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff89b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:13, skipping insertion in model container [2022-11-25 18:19:13,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:11" (2/3) ... [2022-11-25 18:19:13,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff89b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:13, skipping insertion in model container [2022-11-25 18:19:13,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:13" (3/3) ... [2022-11-25 18:19:13,413 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-11-25 18:19:13,436 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:19:13,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-25 18:19:13,437 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:19:13,581 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 18:19:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 226 transitions, 484 flow [2022-11-25 18:19:13,805 INFO L130 PetriNetUnfolder]: 15/222 cut-off events. [2022-11-25 18:19:13,805 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:19:13,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 222 events. 15/222 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 206 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-25 18:19:13,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 226 transitions, 484 flow [2022-11-25 18:19:13,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 217 transitions, 458 flow [2022-11-25 18:19:13,831 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:19:13,852 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 217 transitions, 458 flow [2022-11-25 18:19:13,856 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 217 transitions, 458 flow [2022-11-25 18:19:13,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 217 transitions, 458 flow [2022-11-25 18:19:13,949 INFO L130 PetriNetUnfolder]: 15/217 cut-off events. [2022-11-25 18:19:13,949 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 18:19:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 217 events. 15/217 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 205 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-25 18:19:13,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2022-11-25 18:19:55,117 INFO L134 LiptonReduction]: Checked pairs total: 7051 [2022-11-25 18:19:55,118 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-25 18:19:55,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:19:55,144 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;@40c421c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:19:55,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-25 18:19:55,149 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:19:55,149 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:19:55,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:19:55,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:19:55,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:19:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 38094, now seen corresponding path program 1 times [2022-11-25 18:19:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:19:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055390251] [2022-11-25 18:19:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:55,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:19:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:19:55,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:19:55,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:19:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:55,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:19:55,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:55,854 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 18:19:55,855 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 18:19:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:55,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:19:55,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:19:55,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055390251] [2022-11-25 18:19:55,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055390251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:55,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:55,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:19:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878375357] [2022-11-25 18:19:55,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:19:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:56,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 457 [2022-11-25 18:19:56,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:56,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:19:56,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 457 [2022-11-25 18:19:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:02,262 INFO L130 PetriNetUnfolder]: 25633/33128 cut-off events. [2022-11-25 18:20:02,264 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2022-11-25 18:20:02,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67198 conditions, 33128 events. 25633/33128 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 1955. Compared 163090 event pairs, 20256 based on Foata normal form. 0/13251 useless extension candidates. Maximal degree in co-relation 28740. Up to 16566 conditions per place. [2022-11-25 18:20:02,767 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 110 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-11-25 18:20:02,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 496 flow [2022-11-25 18:20:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-11-25 18:20:02,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48431801604668123 [2022-11-25 18:20:02,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-11-25 18:20:02,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-11-25 18:20:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:02,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-11-25 18:20:02,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,818 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 140 flow. Second operand 3 states and 664 transitions. [2022-11-25 18:20:02,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 496 flow [2022-11-25 18:20:02,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 464 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 18:20:02,878 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 134 flow [2022-11-25 18:20:02,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2022-11-25 18:20:02,886 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2022-11-25 18:20:02,886 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 134 flow [2022-11-25 18:20:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:02,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:20:02,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:03,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:03,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash 38093, now seen corresponding path program 1 times [2022-11-25 18:20:03,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584571843] [2022-11-25 18:20:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:03,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:03,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:03,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 18:20:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:03,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:20:03,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:03,465 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-25 18:20:03,465 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-25 18:20:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:03,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:03,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584571843] [2022-11-25 18:20:03,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584571843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:03,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:03,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:03,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584470623] [2022-11-25 18:20:03,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:03,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 457 [2022-11-25 18:20:03,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:03,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:03,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 457 [2022-11-25 18:20:03,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:07,534 INFO L130 PetriNetUnfolder]: 25633/33126 cut-off events. [2022-11-25 18:20:07,535 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-25 18:20:07,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66573 conditions, 33126 events. 25633/33126 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 2163. Compared 164907 event pairs, 20256 based on Foata normal form. 0/13253 useless extension candidates. Maximal degree in co-relation 33284. Up to 33126 conditions per place. [2022-11-25 18:20:07,733 INFO L137 encePairwiseOnDemand]: 455/457 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-25 18:20:07,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 246 flow [2022-11-25 18:20:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2022-11-25 18:20:07,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4420131291028446 [2022-11-25 18:20:07,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2022-11-25 18:20:07,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2022-11-25 18:20:07,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:07,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2022-11-25 18:20:07,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:07,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:07,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:07,750 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 134 flow. Second operand 3 states and 606 transitions. [2022-11-25 18:20:07,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 246 flow [2022-11-25 18:20:07,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:07,753 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 132 flow [2022-11-25 18:20:07,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-11-25 18:20:07,754 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2022-11-25 18:20:07,755 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 132 flow [2022-11-25 18:20:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:07,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:07,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:20:07,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:07,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 38268, now seen corresponding path program 1 times [2022-11-25 18:20:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976010323] [2022-11-25 18:20:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:07,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 18:20:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:08,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:20:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:08,278 INFO L321 Elim1Store]: treesize reduction 210, result has 13.6 percent of original size [2022-11-25 18:20:08,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 73 [2022-11-25 18:20:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:08,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:08,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:08,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976010323] [2022-11-25 18:20:08,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976010323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:08,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:08,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340917351] [2022-11-25 18:20:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:08,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:08,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:08,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 457 [2022-11-25 18:20:08,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:08,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:08,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 457 [2022-11-25 18:20:08,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:12,065 INFO L130 PetriNetUnfolder]: 20633/26874 cut-off events. [2022-11-25 18:20:12,065 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-25 18:20:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54069 conditions, 26874 events. 20633/26874 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 131347 event pairs, 16256 based on Foata normal form. 0/11253 useless extension candidates. Maximal degree in co-relation 54061. Up to 26874 conditions per place. [2022-11-25 18:20:12,216 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-11-25 18:20:12,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 238 flow [2022-11-25 18:20:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-11-25 18:20:12,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4412837345003647 [2022-11-25 18:20:12,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-11-25 18:20:12,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-11-25 18:20:12,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:12,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-11-25 18:20:12,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,227 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 132 flow. Second operand 3 states and 605 transitions. [2022-11-25 18:20:12,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 238 flow [2022-11-25 18:20:12,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:12,229 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 129 flow [2022-11-25 18:20:12,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2022-11-25 18:20:12,231 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -7 predicate places. [2022-11-25 18:20:12,232 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 129 flow [2022-11-25 18:20:12,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:12,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:12,233 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:20:12,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:12,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:12,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:12,444 INFO L85 PathProgramCache]: Analyzing trace with hash 38269, now seen corresponding path program 1 times [2022-11-25 18:20:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:12,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657173562] [2022-11-25 18:20:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:12,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:12,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:12,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 18:20:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:12,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 18:20:12,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:12,830 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 18:20:12,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-25 18:20:12,890 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-25 18:20:12,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-25 18:20:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:12,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:12,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:12,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657173562] [2022-11-25 18:20:12,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657173562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:12,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:12,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:12,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913182503] [2022-11-25 18:20:12,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:12,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:12,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:13,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2022-11-25 18:20:13,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:13,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:13,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2022-11-25 18:20:13,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:15,268 INFO L130 PetriNetUnfolder]: 15633/20622 cut-off events. [2022-11-25 18:20:15,269 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2022-11-25 18:20:15,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41566 conditions, 20622 events. 15633/20622 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 99611 event pairs, 12256 based on Foata normal form. 0/9253 useless extension candidates. Maximal degree in co-relation 41557. Up to 20622 conditions per place. [2022-11-25 18:20:15,377 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-11-25 18:20:15,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 231 flow [2022-11-25 18:20:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2022-11-25 18:20:15,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4442013129102845 [2022-11-25 18:20:15,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2022-11-25 18:20:15,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2022-11-25 18:20:15,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:15,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2022-11-25 18:20:15,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:15,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:15,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:15,389 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 129 flow. Second operand 3 states and 609 transitions. [2022-11-25 18:20:15,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 231 flow [2022-11-25 18:20:15,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:15,392 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 126 flow [2022-11-25 18:20:15,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-11-25 18:20:15,394 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2022-11-25 18:20:15,394 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 126 flow [2022-11-25 18:20:15,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:15,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:15,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:20:15,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:15,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:15,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1185621, now seen corresponding path program 1 times [2022-11-25 18:20:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:15,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942188725] [2022-11-25 18:20:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:15,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:15,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:15,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:15,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 18:20:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:15,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:20:15,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:16,000 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 18:20:16,001 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 18:20:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:16,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:20:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:16,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942188725] [2022-11-25 18:20:16,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942188725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:20:16,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:20:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:20:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006158483] [2022-11-25 18:20:16,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:20:16,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:20:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:20:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:20:17,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 457 [2022-11-25 18:20:17,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:17,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:17,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 457 [2022-11-25 18:20:17,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:21,557 INFO L130 PetriNetUnfolder]: 23451/30936 cut-off events. [2022-11-25 18:20:21,557 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-11-25 18:20:21,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62354 conditions, 30936 events. 23451/30936 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 156033 event pairs, 18384 based on Foata normal form. 0/13883 useless extension candidates. Maximal degree in co-relation 62344. Up to 10312 conditions per place. [2022-11-25 18:20:21,765 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 149 selfloop transitions, 7 changer transitions 0/156 dead transitions. [2022-11-25 18:20:21,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 156 transitions, 666 flow [2022-11-25 18:20:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:20:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:20:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-11-25 18:20:21,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4474835886214442 [2022-11-25 18:20:21,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-11-25 18:20:21,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-11-25 18:20:21,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:21,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-11-25 18:20:21,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:21,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 457.0) internal successors, (3199), 7 states have internal predecessors, (3199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:21,788 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 457.0) internal successors, (3199), 7 states have internal predecessors, (3199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:21,788 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 126 flow. Second operand 6 states and 1227 transitions. [2022-11-25 18:20:21,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 156 transitions, 666 flow [2022-11-25 18:20:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 156 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:21,793 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 179 flow [2022-11-25 18:20:21,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2022-11-25 18:20:21,795 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2022-11-25 18:20:21,795 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 179 flow [2022-11-25 18:20:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:21,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:21,796 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:20:21,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-25 18:20:22,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:22,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 36807192, now seen corresponding path program 1 times [2022-11-25 18:20:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:22,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057956599] [2022-11-25 18:20:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:22,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:22,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 18:20:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:22,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 18:20:22,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:22,428 INFO L321 Elim1Store]: treesize reduction 146, result has 27.4 percent of original size [2022-11-25 18:20:22,429 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 4 case distinctions, treesize of input 22 treesize of output 64 [2022-11-25 18:20:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:22,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:22,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057956599] [2022-11-25 18:20:22,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057956599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:20:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520073967] [2022-11-25 18:20:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:20:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:20:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:20:23,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 457 [2022-11-25 18:20:23,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:23,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:23,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 457 [2022-11-25 18:20:23,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:28,802 INFO L130 PetriNetUnfolder]: 30051/39414 cut-off events. [2022-11-25 18:20:28,802 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2022-11-25 18:20:28,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79414 conditions, 39414 events. 30051/39414 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 215762 event pairs, 3987 based on Foata normal form. 0/17346 useless extension candidates. Maximal degree in co-relation 79399. Up to 33328 conditions per place. [2022-11-25 18:20:28,998 INFO L137 encePairwiseOnDemand]: 449/457 looper letters, 93 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2022-11-25 18:20:28,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 474 flow [2022-11-25 18:20:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:20:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:20:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 813 transitions. [2022-11-25 18:20:29,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4447483588621444 [2022-11-25 18:20:29,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 813 transitions. [2022-11-25 18:20:29,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 813 transitions. [2022-11-25 18:20:29,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:29,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 813 transitions. [2022-11-25 18:20:29,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:29,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:29,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:29,012 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 179 flow. Second operand 4 states and 813 transitions. [2022-11-25 18:20:29,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 474 flow [2022-11-25 18:20:29,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 464 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:29,015 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 212 flow [2022-11-25 18:20:29,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2022-11-25 18:20:29,017 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2022-11-25 18:20:29,017 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 212 flow [2022-11-25 18:20:29,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:29,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:29,018 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:20:29,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:29,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:29,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 36807191, now seen corresponding path program 1 times [2022-11-25 18:20:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172214062] [2022-11-25 18:20:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:29,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:29,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 18:20:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:29,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:20:29,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:29,492 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-25 18:20:29,492 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-25 18:20:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:29,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:29,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172214062] [2022-11-25 18:20:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172214062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:29,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:20:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536130252] [2022-11-25 18:20:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:20:29,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:20:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:20:29,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 457 [2022-11-25 18:20:29,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:29,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:29,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 457 [2022-11-25 18:20:29,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:31,809 INFO L130 PetriNetUnfolder]: 14478/19323 cut-off events. [2022-11-25 18:20:31,810 INFO L131 PetriNetUnfolder]: For 2469/2469 co-relation queries the response was YES. [2022-11-25 18:20:31,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43570 conditions, 19323 events. 14478/19323 cut-off events. For 2469/2469 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 92374 event pairs, 10215 based on Foata normal form. 0/12435 useless extension candidates. Maximal degree in co-relation 43553. Up to 19316 conditions per place. [2022-11-25 18:20:31,922 INFO L137 encePairwiseOnDemand]: 451/457 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2022-11-25 18:20:31,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 302 flow [2022-11-25 18:20:31,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:20:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:20:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 776 transitions. [2022-11-25 18:20:31,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.424507658643326 [2022-11-25 18:20:31,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 776 transitions. [2022-11-25 18:20:31,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 776 transitions. [2022-11-25 18:20:31,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:31,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 776 transitions. [2022-11-25 18:20:31,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:31,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:31,935 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 457.0) internal successors, (2285), 5 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:31,935 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 212 flow. Second operand 4 states and 776 transitions. [2022-11-25 18:20:31,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 302 flow [2022-11-25 18:20:31,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:31,939 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 191 flow [2022-11-25 18:20:31,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2022-11-25 18:20:31,940 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2022-11-25 18:20:31,940 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 191 flow [2022-11-25 18:20:31,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:31,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:31,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:20:31,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:32,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:32,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 36807243, now seen corresponding path program 1 times [2022-11-25 18:20:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:32,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974161660] [2022-11-25 18:20:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:32,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:32,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:32,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 18:20:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:32,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:20:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:32,533 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-25 18:20:32,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-25 18:20:32,582 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:20:32,583 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 31 treesize of output 27 [2022-11-25 18:20:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:32,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:32,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:32,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974161660] [2022-11-25 18:20:32,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974161660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:32,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:32,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971815207] [2022-11-25 18:20:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:32,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:32,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2022-11-25 18:20:32,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:32,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:32,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2022-11-25 18:20:32,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:34,688 INFO L130 PetriNetUnfolder]: 13596/18135 cut-off events. [2022-11-25 18:20:34,688 INFO L131 PetriNetUnfolder]: For 2370/2370 co-relation queries the response was YES. [2022-11-25 18:20:34,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40218 conditions, 18135 events. 13596/18135 cut-off events. For 2370/2370 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 85726 event pairs, 9576 based on Foata normal form. 0/11892 useless extension candidates. Maximal degree in co-relation 40201. Up to 18135 conditions per place. [2022-11-25 18:20:34,790 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-11-25 18:20:34,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 295 flow [2022-11-25 18:20:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-11-25 18:20:34,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43982494529540483 [2022-11-25 18:20:34,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-11-25 18:20:34,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-11-25 18:20:34,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:34,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-11-25 18:20:34,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,802 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 191 flow. Second operand 3 states and 603 transitions. [2022-11-25 18:20:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 295 flow [2022-11-25 18:20:34,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:20:34,805 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 184 flow [2022-11-25 18:20:34,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2022-11-25 18:20:34,806 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2022-11-25 18:20:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 184 flow [2022-11-25 18:20:34,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:34,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:34,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 18:20:34,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-25 18:20:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:35,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 36807242, now seen corresponding path program 1 times [2022-11-25 18:20:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:35,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38816448] [2022-11-25 18:20:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:35,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:35,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 18:20:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 18:20:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:35,274 INFO L321 Elim1Store]: treesize reduction 194, result has 13.0 percent of original size [2022-11-25 18:20:35,275 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 7 case distinctions, treesize of input 49 treesize of output 62 [2022-11-25 18:20:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:35,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:35,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38816448] [2022-11-25 18:20:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38816448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:35,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:35,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189471235] [2022-11-25 18:20:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:35,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 457 [2022-11-25 18:20:35,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:35,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:35,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 457 [2022-11-25 18:20:35,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:37,687 INFO L130 PetriNetUnfolder]: 12714/16947 cut-off events. [2022-11-25 18:20:37,687 INFO L131 PetriNetUnfolder]: For 2261/2261 co-relation queries the response was YES. [2022-11-25 18:20:37,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37689 conditions, 16947 events. 12714/16947 cut-off events. For 2261/2261 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 79215 event pairs, 8937 based on Foata normal form. 0/11349 useless extension candidates. Maximal degree in co-relation 37672. Up to 16947 conditions per place. [2022-11-25 18:20:37,793 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-11-25 18:20:37,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 284 flow [2022-11-25 18:20:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:20:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-11-25 18:20:37,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4339897884755653 [2022-11-25 18:20:37,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2022-11-25 18:20:37,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2022-11-25 18:20:37,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:37,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2022-11-25 18:20:37,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,804 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 184 flow. Second operand 3 states and 595 transitions. [2022-11-25 18:20:37,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 284 flow [2022-11-25 18:20:37,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:37,809 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 181 flow [2022-11-25 18:20:37,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2022-11-25 18:20:37,811 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2022-11-25 18:20:37,811 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 181 flow [2022-11-25 18:20:37,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:37,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:37,812 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:20:37,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:38,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 965770894, now seen corresponding path program 2 times [2022-11-25 18:20:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:38,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934328951] [2022-11-25 18:20:38,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:20:38,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:38,025 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:38,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-25 18:20:38,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:20:38,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:20:38,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:20:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:38,438 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-25 18:20:38,438 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-25 18:20:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:38,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:20:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:39,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:39,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934328951] [2022-11-25 18:20:39,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934328951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:20:39,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:20:39,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:20:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141893393] [2022-11-25 18:20:39,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:20:39,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:20:39,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:20:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:20:44,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 457 [2022-11-25 18:20:44,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 181 flow. Second operand has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:44,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:44,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 457 [2022-11-25 18:20:44,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:20:56,168 INFO L130 PetriNetUnfolder]: 42372/56474 cut-off events. [2022-11-25 18:20:56,168 INFO L131 PetriNetUnfolder]: For 7521/7521 co-relation queries the response was YES. [2022-11-25 18:20:56,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125523 conditions, 56474 events. 42372/56474 cut-off events. For 7521/7521 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 301238 event pairs, 29790 based on Foata normal form. 6/37820 useless extension candidates. Maximal degree in co-relation 125505. Up to 11421 conditions per place. [2022-11-25 18:20:56,541 INFO L137 encePairwiseOnDemand]: 453/457 looper letters, 432 selfloop transitions, 12 changer transitions 0/444 dead transitions. [2022-11-25 18:20:56,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 444 transitions, 2113 flow [2022-11-25 18:20:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:20:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:20:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2578 transitions. [2022-11-25 18:20:56,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4700948212983224 [2022-11-25 18:20:56,550 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2578 transitions. [2022-11-25 18:20:56,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2578 transitions. [2022-11-25 18:20:56,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:20:56,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2578 transitions. [2022-11-25 18:20:56,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 214.83333333333334) internal successors, (2578), 12 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,571 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 457.0) internal successors, (5941), 13 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,572 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 181 flow. Second operand 12 states and 2578 transitions. [2022-11-25 18:20:56,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 444 transitions, 2113 flow [2022-11-25 18:20:56,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 444 transitions, 2112 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:20:56,581 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 281 flow [2022-11-25 18:20:56,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=281, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2022-11-25 18:20:56,582 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2022-11-25 18:20:56,582 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 281 flow [2022-11-25 18:20:56,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:56,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:20:56,584 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:20:56,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:56,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:56,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:20:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:56,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1012053032, now seen corresponding path program 1 times [2022-11-25 18:20:56,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:20:56,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64672880] [2022-11-25 18:20:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:56,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:20:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:20:56,799 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:20:56,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 18:20:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:56,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:20:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:56,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:56,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:56,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:20:57,169 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-25 18:20:57,170 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 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-25 18:20:57,198 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 [2022-11-25 18:20:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:20:57,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:57,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:20:57,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64672880] [2022-11-25 18:20:57,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64672880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:57,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:57,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:20:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039107476] [2022-11-25 18:20:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:20:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:57,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 457 [2022-11-25 18:20:57,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:57,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:20:57,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 457 [2022-11-25 18:20:57,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:21:04,309 INFO L130 PetriNetUnfolder]: 41332/54914 cut-off events. [2022-11-25 18:21:04,309 INFO L131 PetriNetUnfolder]: For 7441/7441 co-relation queries the response was YES. [2022-11-25 18:21:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122242 conditions, 54914 events. 41332/54914 cut-off events. For 7441/7441 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 289202 event pairs, 29030 based on Foata normal form. 0/37174 useless extension candidates. Maximal degree in co-relation 122216. Up to 54914 conditions per place. [2022-11-25 18:21:04,805 INFO L137 encePairwiseOnDemand]: 454/457 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-11-25 18:21:04,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 57 transitions, 391 flow [2022-11-25 18:21:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:21:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:21:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2022-11-25 18:21:04,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43690736688548504 [2022-11-25 18:21:04,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2022-11-25 18:21:04,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2022-11-25 18:21:04,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:21:04,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2022-11-25 18:21:04,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 457.0) internal successors, (1828), 4 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,814 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 281 flow. Second operand 3 states and 599 transitions. [2022-11-25 18:21:04,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 57 transitions, 391 flow [2022-11-25 18:21:04,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 57 transitions, 366 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-25 18:21:04,818 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 254 flow [2022-11-25 18:21:04,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2022-11-25 18:21:04,819 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2022-11-25 18:21:04,820 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 254 flow [2022-11-25 18:21:04,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:04,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:21:04,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 18:21:04,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-25 18:21:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:05,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2022-11-25 18:21:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1012053031, now seen corresponding path program 1 times [2022-11-25 18:21:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:21:05,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542713903] [2022-11-25 18:21:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:05,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:21:05,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:21:05,037 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:21:05,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cc9c05-5ba9-4640-930d-b7fe6dbdb895/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 18:21:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:05,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:21:05,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:05,301 INFO L321 Elim1Store]: treesize reduction 180, result has 15.5 percent of original size [2022-11-25 18:21:05,301 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 5 case distinctions, treesize of input 36 treesize of output 55 [2022-11-25 18:21:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:21:05,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:21:05,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:21:05,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542713903] [2022-11-25 18:21:05,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542713903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:05,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:21:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599680679] [2022-11-25 18:21:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:21:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:21:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:21:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:21:05,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 457 [2022-11-25 18:21:05,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:05,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:21:05,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 457 [2022-11-25 18:21:05,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand