./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:54:36,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:54:36,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:54:36,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:54:36,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:54:36,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:54:36,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:54:36,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:54:36,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:54:36,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:54:36,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:54:36,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:54:36,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:54:36,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:54:36,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:54:36,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:54:36,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:54:36,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:54:36,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:54:36,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:54:36,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:54:36,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:54:36,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:54:36,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:54:36,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:54:36,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:54:36,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:54:36,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:54:36,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:54:36,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:54:36,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:54:36,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:54:36,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:54:36,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:54:36,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:54:36,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:54:36,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:54:36,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:54:36,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:54:36,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:54:36,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:54:36,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:54:36,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:54:36,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:54:36,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:54:36,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:54:36,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:54:36,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:54:36,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:54:36,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:54:36,260 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:54:36,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:54:36,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:54:36,260 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:54:36,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:54:36,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:54:36,261 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:54:36,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:54:36,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:54:36,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:54:36,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:54:36,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:54:36,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:54:36,263 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:54:36,264 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_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-12-13 11:54:36,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:54:36,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:54:36,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:54:36,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:54:36,456 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:54:36,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 11:54:38,989 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:54:39,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:54:39,146 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 11:54:39,151 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/29fef3a96/662a162dca144c9baac4f866577ecd0d/FLAG756a63c7c [2022-12-13 11:54:39,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/29fef3a96/662a162dca144c9baac4f866577ecd0d [2022-12-13 11:54:39,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:54:39,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:54:39,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:54:39,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:54:39,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:54:39,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:54:39" (1/1) ... [2022-12-13 11:54:39,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fb02d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:39, skipping insertion in model container [2022-12-13 11:54:39,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:54:39" (1/1) ... [2022-12-13 11:54:39,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:54:39,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:54:39,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:39,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:39,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:39,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:39,700 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_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 11:54:39,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:54:39,714 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 11:54:39,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e5cb48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:39, skipping insertion in model container [2022-12-13 11:54:39,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:54:39,715 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 11:54:39,716 INFO L158 Benchmark]: Toolchain (without parser) took 151.89ms. Allocated memory is still 132.1MB. Free memory was 98.1MB in the beginning and 88.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:54:39,717 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:54:39,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.44ms. Allocated memory is still 132.1MB. Free memory was 98.1MB in the beginning and 88.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 11:54:39,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.44ms. Allocated memory is still 132.1MB. Free memory was 98.1MB in the beginning and 88.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:54:41,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:54:41,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:54:41,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:54:41,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:54:41,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:54:41,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:54:41,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:54:41,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:54:41,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:54:41,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:54:41,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:54:41,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:54:41,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:54:41,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:54:41,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:54:41,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:54:41,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:54:41,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:54:41,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:54:41,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:54:41,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:54:41,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:54:41,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:54:41,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:54:41,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:54:41,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:54:41,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:54:41,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:54:41,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:54:41,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:54:41,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:54:41,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:54:41,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:54:41,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:54:41,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:54:41,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:54:41,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:54:41,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:54:41,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:54:41,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:54:41,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 11:54:41,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:54:41,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:54:41,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:54:41,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:54:41,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:54:41,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:54:41,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:54:41,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:54:41,087 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:54:41,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:54:41,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:54:41,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:54:41,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:54:41,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:54:41,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 11:54:41,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 11:54:41,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:54:41,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:54:41,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:54:41,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:54:41,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:54:41,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:54:41,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:54:41,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:54:41,090 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 11:54:41,091 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:54:41,091 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_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce [2022-12-13 11:54:41,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:54:41,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:54:41,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:54:41,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:54:41,340 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:54:41,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 11:54:43,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:54:43,971 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:54:43,971 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c [2022-12-13 11:54:43,976 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/cc668b108/d86e963d87e1440a873d58658adbfc21/FLAGdff0331a3 [2022-12-13 11:54:43,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/data/cc668b108/d86e963d87e1440a873d58658adbfc21 [2022-12-13 11:54:43,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:54:43,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:54:43,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:54:43,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:54:43,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:54:43,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:54:43" (1/1) ... [2022-12-13 11:54:43,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8221c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:43, skipping insertion in model container [2022-12-13 11:54:43,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:54:43" (1/1) ... [2022-12-13 11:54:44,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:54:44,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:54:44,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,153 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,157 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_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 11:54:44,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:54:44,175 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 11:54:44,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:54:44,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,185 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_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 11:54:44,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:54:44,192 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:54:44,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:54:44,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:54:44,208 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_ca07e162-f997-4a72-8619-5282532f0aab/sv-benchmarks/c/weaver/test-context1.wvr.c[2433,2446] [2022-12-13 11:54:44,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:54:44,224 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:54:44,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44 WrapperNode [2022-12-13 11:54:44,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:54:44,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:54:44,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:54:44,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:54:44,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,255 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 129 [2022-12-13 11:54:44,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:54:44,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:54:44,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:54:44,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:54:44,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:54:44,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:54:44,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:54:44,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:54:44,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (1/1) ... [2022-12-13 11:54:44,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:54:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:54:44,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:54:44,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:54:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:54:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 11:54:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:54:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 11:54:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:54:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:54:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:54:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:54:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:54:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:54:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:54:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:54:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:54:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:54:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 11:54:44,346 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:54:44,437 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:54:44,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:54:44,768 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:54:44,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:54:44,867 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 11:54:44,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:54:44 BoogieIcfgContainer [2022-12-13 11:54:44,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:54:44,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:54:44,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:54:44,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:54:44,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:54:43" (1/3) ... [2022-12-13 11:54:44,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc25cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:54:44, skipping insertion in model container [2022-12-13 11:54:44,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:54:44" (2/3) ... [2022-12-13 11:54:44,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bfc25cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:54:44, skipping insertion in model container [2022-12-13 11:54:44,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:54:44" (3/3) ... [2022-12-13 11:54:44,876 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-12-13 11:54:44,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:54:44,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 11:54:44,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:54:44,940 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:54:44,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 280 flow [2022-12-13 11:54:45,020 INFO L130 PetriNetUnfolder]: 9/130 cut-off events. [2022-12-13 11:54:45,020 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:54:45,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 9/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:54:45,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 132 transitions, 280 flow [2022-12-13 11:54:45,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 125 transitions, 262 flow [2022-12-13 11:54:45,035 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:54:45,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 125 transitions, 262 flow [2022-12-13 11:54:45,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 125 transitions, 262 flow [2022-12-13 11:54:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 262 flow [2022-12-13 11:54:45,075 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2022-12-13 11:54:45,075 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:54:45,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:54:45,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2022-12-13 11:54:55,374 INFO L134 LiptonReduction]: Checked pairs total: 889 [2022-12-13 11:54:55,374 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-12-13 11:54:55,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:54:55,392 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;@6a68d615, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:54:55,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 11:54:55,394 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:54:55,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:54:55,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:55,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:54:55,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash 18973, now seen corresponding path program 1 times [2022-12-13 11:54:55,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:55,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914585608] [2022-12-13 11:54:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:55,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:55,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:55,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 11:54:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:54:55,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:55,591 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 11:54:55,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 11:54:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:55,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:55,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:55,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914585608] [2022-12-13 11:54:55,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914585608] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:55,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:55,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:55,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711488819] [2022-12-13 11:54:55,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:55,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:55,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2022-12-13 11:54:55,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:55,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2022-12-13 11:54:55,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:55,885 INFO L130 PetriNetUnfolder]: 146/249 cut-off events. [2022-12-13 11:54:55,885 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 11:54:55,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 249 events. 146/249 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 808 event pairs, 105 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 424. Up to 249 conditions per place. [2022-12-13 11:54:55,888 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 11:54:55,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 124 flow [2022-12-13 11:54:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2022-12-13 11:54:55,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4490566037735849 [2022-12-13 11:54:55,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2022-12-13 11:54:55,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2022-12-13 11:54:55,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:55,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2022-12-13 11:54:55,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,912 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 72 flow. Second operand 3 states and 357 transitions. [2022-12-13 11:54:55,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 124 flow [2022-12-13 11:54:55,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:54:55,916 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 62 flow [2022-12-13 11:54:55,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2022-12-13 11:54:55,921 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-12-13 11:54:55,921 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 62 flow [2022-12-13 11:54:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:55,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:55,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:54:55,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:54:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:56,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash 18974, now seen corresponding path program 1 times [2022-12-13 11:54:56,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:56,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052751436] [2022-12-13 11:54:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:56,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:56,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:56,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:56,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 11:54:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:56,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:54:56,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:56,302 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:54:56,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:54:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:56,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:56,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052751436] [2022-12-13 11:54:56,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052751436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:56,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:56,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820787090] [2022-12-13 11:54:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:56,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2022-12-13 11:54:56,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:56,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2022-12-13 11:54:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:56,681 INFO L130 PetriNetUnfolder]: 291/496 cut-off events. [2022-12-13 11:54:56,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:54:56,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 496 events. 291/496 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2011 event pairs, 210 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 1000. Up to 250 conditions per place. [2022-12-13 11:54:56,683 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 11:54:56,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 226 flow [2022-12-13 11:54:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-12-13 11:54:56,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48050314465408805 [2022-12-13 11:54:56,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-12-13 11:54:56,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-12-13 11:54:56,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:56,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-12-13 11:54:56,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,692 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 62 flow. Second operand 3 states and 382 transitions. [2022-12-13 11:54:56,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 226 flow [2022-12-13 11:54:56,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:56,694 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 73 flow [2022-12-13 11:54:56,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2022-12-13 11:54:56,694 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2022-12-13 11:54:56,694 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 73 flow [2022-12-13 11:54:56,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:56,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:56,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:54:56,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 11:54:56,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:56,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash 19063, now seen corresponding path program 1 times [2022-12-13 11:54:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:56,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433681589] [2022-12-13 11:54:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:56,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:56,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:56,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 11:54:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:56,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:54:56,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:57,027 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-13 11:54:57,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-12-13 11:54:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:57,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:57,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433681589] [2022-12-13 11:54:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433681589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:57,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:57,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474863288] [2022-12-13 11:54:57,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:57,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2022-12-13 11:54:57,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:57,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2022-12-13 11:54:57,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:57,295 INFO L130 PetriNetUnfolder]: 227/398 cut-off events. [2022-12-13 11:54:57,295 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:54:57,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 398 events. 227/398 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1549 event pairs, 162 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 808. Up to 398 conditions per place. [2022-12-13 11:54:57,297 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 11:54:57,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 123 flow [2022-12-13 11:54:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-12-13 11:54:57,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44654088050314467 [2022-12-13 11:54:57,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-12-13 11:54:57,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-12-13 11:54:57,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:57,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-12-13 11:54:57,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,303 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 73 flow. Second operand 3 states and 355 transitions. [2022-12-13 11:54:57,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 123 flow [2022-12-13 11:54:57,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:57,305 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 69 flow [2022-12-13 11:54:57,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2022-12-13 11:54:57,306 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-12-13 11:54:57,306 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 69 flow [2022-12-13 11:54:57,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:57,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:54:57,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 11:54:57,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:57,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 19061, now seen corresponding path program 1 times [2022-12-13 11:54:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:57,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671009858] [2022-12-13 11:54:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:57,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:57,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:57,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 11:54:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:57,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 11:54:57,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:57,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:54:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:54:57,595 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 11:54:57,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 11:54:57,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 11:54:57,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:57,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:57,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:57,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671009858] [2022-12-13 11:54:57,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671009858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:57,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:57,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:54:57,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988464578] [2022-12-13 11:54:57,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:57,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:54:57,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:54:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:54:57,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2022-12-13 11:54:57,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:57,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2022-12-13 11:54:57,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:57,871 INFO L130 PetriNetUnfolder]: 163/300 cut-off events. [2022-12-13 11:54:57,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:54:57,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 300 events. 163/300 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1111 event pairs, 114 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 611. Up to 300 conditions per place. [2022-12-13 11:54:57,873 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 11:54:57,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 115 flow [2022-12-13 11:54:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:54:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:54:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 11:54:57,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4440251572327044 [2022-12-13 11:54:57,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 11:54:57,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 11:54:57,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:57,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 11:54:57,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,879 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 69 flow. Second operand 3 states and 353 transitions. [2022-12-13 11:54:57,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 115 flow [2022-12-13 11:54:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:57,880 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 66 flow [2022-12-13 11:54:57,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2022-12-13 11:54:57,881 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-12-13 11:54:57,881 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 66 flow [2022-12-13 11:54:57,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:57,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:57,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:54:57,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 11:54:58,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:58,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 591017, now seen corresponding path program 1 times [2022-12-13 11:54:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:58,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999447475] [2022-12-13 11:54:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:58,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:58,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:58,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 11:54:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:58,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:54:58,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:58,185 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:54:58,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:54:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:58,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:54:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:58,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999447475] [2022-12-13 11:54:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999447475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:54:58,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:54:58,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 11:54:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283828752] [2022-12-13 11:54:58,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:54:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:54:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:54:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:54:58,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 265 [2022-12-13 11:54:58,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 66 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:58,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:58,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 265 [2022-12-13 11:54:58,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:59,391 INFO L130 PetriNetUnfolder]: 246/453 cut-off events. [2022-12-13 11:54:59,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:54:59,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 453 events. 246/453 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1861 event pairs, 171 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 925. Up to 151 conditions per place. [2022-12-13 11:54:59,393 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 65 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2022-12-13 11:54:59,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 72 transitions, 318 flow [2022-12-13 11:54:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:54:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:54:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 699 transitions. [2022-12-13 11:54:59,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.439622641509434 [2022-12-13 11:54:59,397 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 699 transitions. [2022-12-13 11:54:59,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 699 transitions. [2022-12-13 11:54:59,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:59,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 699 transitions. [2022-12-13 11:54:59,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.5) internal successors, (699), 6 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,401 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,401 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 66 flow. Second operand 6 states and 699 transitions. [2022-12-13 11:54:59,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 72 transitions, 318 flow [2022-12-13 11:54:59,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 72 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:59,402 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 119 flow [2022-12-13 11:54:59,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2022-12-13 11:54:59,403 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 11:54:59,403 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 119 flow [2022-12-13 11:54:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:59,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:54:59,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 11:54:59,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:59,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:54:59,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:59,605 INFO L85 PathProgramCache]: Analyzing trace with hash 18332383, now seen corresponding path program 1 times [2022-12-13 11:54:59,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:54:59,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201146500] [2022-12-13 11:54:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:54:59,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:54:59,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:54:59,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 11:54:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:59,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:54:59,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:54:59,694 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 11:54:59,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-13 11:54:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:59,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:54:59,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:54:59,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201146500] [2022-12-13 11:54:59,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201146500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:59,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:59,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:54:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386503101] [2022-12-13 11:54:59,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:59,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:54:59,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:54:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:54:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:54:59,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2022-12-13 11:54:59,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:59,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2022-12-13 11:54:59,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:54:59,920 INFO L130 PetriNetUnfolder]: 159/300 cut-off events. [2022-12-13 11:54:59,921 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:54:59,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 300 events. 159/300 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1112 event pairs, 96 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 637. Up to 293 conditions per place. [2022-12-13 11:54:59,922 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 24 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2022-12-13 11:54:59,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 171 flow [2022-12-13 11:54:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:54:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:54:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 452 transitions. [2022-12-13 11:54:59,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42641509433962266 [2022-12-13 11:54:59,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 452 transitions. [2022-12-13 11:54:59,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 452 transitions. [2022-12-13 11:54:59,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:54:59,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 452 transitions. [2022-12-13 11:54:59,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,927 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,927 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 119 flow. Second operand 4 states and 452 transitions. [2022-12-13 11:54:59,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 171 flow [2022-12-13 11:54:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 161 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:59,928 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 113 flow [2022-12-13 11:54:59,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-12-13 11:54:59,929 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 11:54:59,929 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 113 flow [2022-12-13 11:54:59,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:59,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:59,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:54:59,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 11:55:00,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 18332382, now seen corresponding path program 1 times [2022-12-13 11:55:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:00,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982838513] [2022-12-13 11:55:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:00,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:00,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:00,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 11:55:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:55:00,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:00,223 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:00,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:00,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:00,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:00,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982838513] [2022-12-13 11:55:00,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982838513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:00,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:00,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304027699] [2022-12-13 11:55:00,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:00,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:00,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:00,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:00,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:00,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:00,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:00,661 INFO L130 PetriNetUnfolder]: 219/438 cut-off events. [2022-12-13 11:55:00,661 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:55:00,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 438 events. 219/438 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2030 event pairs, 63 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 920. Up to 310 conditions per place. [2022-12-13 11:55:00,663 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 37 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2022-12-13 11:55:00,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 228 flow [2022-12-13 11:55:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2022-12-13 11:55:00,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4367924528301887 [2022-12-13 11:55:00,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2022-12-13 11:55:00,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2022-12-13 11:55:00,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2022-12-13 11:55:00,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:00,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:00,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:00,666 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 113 flow. Second operand 4 states and 463 transitions. [2022-12-13 11:55:00,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 228 flow [2022-12-13 11:55:00,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:00,668 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 132 flow [2022-12-13 11:55:00,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2022-12-13 11:55:00,669 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2022-12-13 11:55:00,669 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 132 flow [2022-12-13 11:55:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:00,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:00,669 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:55:00,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 11:55:00,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash 18332426, now seen corresponding path program 1 times [2022-12-13 11:55:00,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:00,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449999579] [2022-12-13 11:55:00,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:00,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:00,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:00,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 11:55:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:00,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:55:00,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:01,026 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-13 11:55:01,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-12-13 11:55:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:01,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:01,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449999579] [2022-12-13 11:55:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449999579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:01,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:01,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288039688] [2022-12-13 11:55:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:01,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:01,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:01,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:01,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:01,210 INFO L130 PetriNetUnfolder]: 192/381 cut-off events. [2022-12-13 11:55:01,210 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-12-13 11:55:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 381 events. 192/381 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1595 event pairs, 135 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 961. Up to 381 conditions per place. [2022-12-13 11:55:01,212 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 11:55:01,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 27 transitions, 182 flow [2022-12-13 11:55:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-12-13 11:55:01,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4276729559748428 [2022-12-13 11:55:01,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-12-13 11:55:01,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-12-13 11:55:01,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:01,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-12-13 11:55:01,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,217 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 132 flow. Second operand 3 states and 340 transitions. [2022-12-13 11:55:01,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 27 transitions, 182 flow [2022-12-13 11:55:01,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:01,218 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 124 flow [2022-12-13 11:55:01,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2022-12-13 11:55:01,219 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 11:55:01,219 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 124 flow [2022-12-13 11:55:01,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:01,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:55:01,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 11:55:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:01,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 18332427, now seen corresponding path program 1 times [2022-12-13 11:55:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:01,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439009443] [2022-12-13 11:55:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:01,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:01,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:01,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:01,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 11:55:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:01,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:55:01,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:55:01,561 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-12-13 11:55:01,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-12-13 11:55:01,569 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 26 treesize of output 24 [2022-12-13 11:55:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:01,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:01,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439009443] [2022-12-13 11:55:01,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439009443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:01,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:01,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:55:01,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900819527] [2022-12-13 11:55:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:55:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:55:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:55:01,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2022-12-13 11:55:01,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:01,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2022-12-13 11:55:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:01,769 INFO L130 PetriNetUnfolder]: 165/324 cut-off events. [2022-12-13 11:55:01,769 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-12-13 11:55:01,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 324 events. 165/324 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1266 event pairs, 114 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 811. Up to 324 conditions per place. [2022-12-13 11:55:01,772 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 11:55:01,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 170 flow [2022-12-13 11:55:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:55:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:55:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-12-13 11:55:01,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43647798742138366 [2022-12-13 11:55:01,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-12-13 11:55:01,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-12-13 11:55:01,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:01,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-12-13 11:55:01,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,775 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 124 flow. Second operand 3 states and 347 transitions. [2022-12-13 11:55:01,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 170 flow [2022-12-13 11:55:01,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:01,776 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 121 flow [2022-12-13 11:55:01,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2022-12-13 11:55:01,777 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-13 11:55:01,777 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 121 flow [2022-12-13 11:55:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:01,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:01,777 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:55:01,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 11:55:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:01,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash 568304312, now seen corresponding path program 1 times [2022-12-13 11:55:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:01,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034938510] [2022-12-13 11:55:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:01,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:01,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 11:55:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:02,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:55:02,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:02,087 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:02,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:02,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:02,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034938510] [2022-12-13 11:55:02,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034938510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:02,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:02,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:55:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056621912] [2022-12-13 11:55:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:02,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:02,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:02,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:02,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:02,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:02,600 INFO L130 PetriNetUnfolder]: 120/247 cut-off events. [2022-12-13 11:55:02,600 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-13 11:55:02,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 247 events. 120/247 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 900 event pairs, 85 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 616. Up to 219 conditions per place. [2022-12-13 11:55:02,601 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 33 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2022-12-13 11:55:02,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 226 flow [2022-12-13 11:55:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 11:55:02,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42924528301886794 [2022-12-13 11:55:02,603 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 11:55:02,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 11:55:02,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:02,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 11:55:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:02,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:02,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:02,605 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 121 flow. Second operand 4 states and 455 transitions. [2022-12-13 11:55:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 226 flow [2022-12-13 11:55:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:55:02,606 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 143 flow [2022-12-13 11:55:02,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2022-12-13 11:55:02,606 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2022-12-13 11:55:02,606 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 143 flow [2022-12-13 11:55:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:02,607 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:02,607 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:55:02,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:02,809 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:02,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:02,810 INFO L85 PathProgramCache]: Analyzing trace with hash 429921502, now seen corresponding path program 2 times [2022-12-13 11:55:02,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:02,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895744075] [2022-12-13 11:55:02,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:02,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:02,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:02,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 11:55:02,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:55:02,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:02,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:55:02,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:02,950 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:02,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:03,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:03,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895744075] [2022-12-13 11:55:03,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895744075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:03,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:03,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 11:55:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702385882] [2022-12-13 11:55:03,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:03,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:55:03,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:55:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:55:05,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 265 [2022-12-13 11:55:05,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:05,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:05,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 265 [2022-12-13 11:55:05,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:08,704 INFO L130 PetriNetUnfolder]: 497/987 cut-off events. [2022-12-13 11:55:08,704 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-12-13 11:55:08,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 987 events. 497/987 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4959 event pairs, 351 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 2500. Up to 343 conditions per place. [2022-12-13 11:55:08,707 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 157 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2022-12-13 11:55:08,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 169 transitions, 974 flow [2022-12-13 11:55:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:55:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 11:55:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1426 transitions. [2022-12-13 11:55:08,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44842767295597485 [2022-12-13 11:55:08,711 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1426 transitions. [2022-12-13 11:55:08,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1426 transitions. [2022-12-13 11:55:08,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:08,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1426 transitions. [2022-12-13 11:55:08,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.83333333333333) internal successors, (1426), 12 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:08,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:08,715 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:08,716 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 143 flow. Second operand 12 states and 1426 transitions. [2022-12-13 11:55:08,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 169 transitions, 974 flow [2022-12-13 11:55:08,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 169 transitions, 964 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:08,722 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 234 flow [2022-12-13 11:55:08,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2022-12-13 11:55:08,722 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2022-12-13 11:55:08,722 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 234 flow [2022-12-13 11:55:08,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.0) internal successors, (1272), 12 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:08,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:08,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:55:08,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:08,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:08,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 430168141, now seen corresponding path program 1 times [2022-12-13 11:55:08,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36137192] [2022-12-13 11:55:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:08,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:08,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:08,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 11:55:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:55:09,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:09,086 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:09,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:09,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:09,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:09,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36137192] [2022-12-13 11:55:09,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36137192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:09,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:09,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 11:55:09,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715609472] [2022-12-13 11:55:09,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:55:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:09,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:55:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:55:10,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 265 [2022-12-13 11:55:10,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 234 flow. Second operand has 8 states, 8 states have (on average 105.5) internal successors, (844), 8 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:10,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:10,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 265 [2022-12-13 11:55:10,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:13,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:15,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:17,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:19,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:21,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:23,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:24,343 INFO L130 PetriNetUnfolder]: 1397/2661 cut-off events. [2022-12-13 11:55:24,343 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 11:55:24,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 2661 events. 1397/2661 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16763 event pairs, 162 based on Foata normal form. 0/2355 useless extension candidates. Maximal degree in co-relation 6559. Up to 973 conditions per place. [2022-12-13 11:55:24,366 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 72 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2022-12-13 11:55:24,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 552 flow [2022-12-13 11:55:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:55:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:55:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 910 transitions. [2022-12-13 11:55:24,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42924528301886794 [2022-12-13 11:55:24,369 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 910 transitions. [2022-12-13 11:55:24,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 910 transitions. [2022-12-13 11:55:24,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:24,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 910 transitions. [2022-12-13 11:55:24,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.75) internal successors, (910), 8 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:24,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:24,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:24,377 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 234 flow. Second operand 8 states and 910 transitions. [2022-12-13 11:55:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 552 flow [2022-12-13 11:55:24,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 527 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:24,379 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 298 flow [2022-12-13 11:55:24,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2022-12-13 11:55:24,380 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2022-12-13 11:55:24,380 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 298 flow [2022-12-13 11:55:24,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.5) internal successors, (844), 8 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:24,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:24,380 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:24,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:24,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:24,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1004276659, now seen corresponding path program 1 times [2022-12-13 11:55:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:24,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124009171] [2022-12-13 11:55:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:24,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:24,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:24,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 11:55:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:55:24,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:24,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:24,808 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 38 treesize of output 34 [2022-12-13 11:55:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:25,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124009171] [2022-12-13 11:55:25,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124009171] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:25,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:25,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 11:55:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609965441] [2022-12-13 11:55:25,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:25,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:55:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:55:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:55:25,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:25,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 107.8) internal successors, (1078), 10 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:25,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:25,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:25,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:28,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:30,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:32,089 INFO L130 PetriNetUnfolder]: 2234/4290 cut-off events. [2022-12-13 11:55:32,089 INFO L131 PetriNetUnfolder]: For 4208/4208 co-relation queries the response was YES. [2022-12-13 11:55:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13209 conditions, 4290 events. 2234/4290 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 29754 event pairs, 162 based on Foata normal form. 450/4740 useless extension candidates. Maximal degree in co-relation 13176. Up to 1549 conditions per place. [2022-12-13 11:55:32,106 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 109 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2022-12-13 11:55:32,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 832 flow [2022-12-13 11:55:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:55:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:55:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1283 transitions. [2022-12-13 11:55:32,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401372212692967 [2022-12-13 11:55:32,108 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1283 transitions. [2022-12-13 11:55:32,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1283 transitions. [2022-12-13 11:55:32,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:32,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1283 transitions. [2022-12-13 11:55:32,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.63636363636364) internal successors, (1283), 11 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:32,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:32,113 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:32,113 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 298 flow. Second operand 11 states and 1283 transitions. [2022-12-13 11:55:32,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 832 flow [2022-12-13 11:55:32,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 127 transitions, 804 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 11:55:32,128 INFO L231 Difference]: Finished difference. Result has 78 places, 49 transitions, 396 flow [2022-12-13 11:55:32,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=396, PETRI_PLACES=78, PETRI_TRANSITIONS=49} [2022-12-13 11:55:32,128 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2022-12-13 11:55:32,128 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 49 transitions, 396 flow [2022-12-13 11:55:32,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.8) internal successors, (1078), 10 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:32,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:32,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:32,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:32,330 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1004276008, now seen corresponding path program 1 times [2022-12-13 11:55:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:32,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5872746] [2022-12-13 11:55:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:32,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:32,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:32,336 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:32,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 11:55:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:55:32,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:32,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:55:32,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:32,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5872746] [2022-12-13 11:55:32,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5872746] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:32,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:32,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 11:55:32,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096630822] [2022-12-13 11:55:32,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:55:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:55:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:55:32,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 265 [2022-12-13 11:55:32,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 49 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:32,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:32,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 265 [2022-12-13 11:55:32,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:33,248 INFO L130 PetriNetUnfolder]: 2486/4758 cut-off events. [2022-12-13 11:55:33,248 INFO L131 PetriNetUnfolder]: For 15275/15275 co-relation queries the response was YES. [2022-12-13 11:55:33,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17147 conditions, 4758 events. 2486/4758 cut-off events. For 15275/15275 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33460 event pairs, 738 based on Foata normal form. 252/5010 useless extension candidates. Maximal degree in co-relation 17107. Up to 2908 conditions per place. [2022-12-13 11:55:33,268 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 62 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2022-12-13 11:55:33,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 643 flow [2022-12-13 11:55:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2022-12-13 11:55:33,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2022-12-13 11:55:33,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2022-12-13 11:55:33,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2022-12-13 11:55:33,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:33,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2022-12-13 11:55:33,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:33,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:33,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:33,271 INFO L175 Difference]: Start difference. First operand has 78 places, 49 transitions, 396 flow. Second operand 4 states and 500 transitions. [2022-12-13 11:55:33,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 643 flow [2022-12-13 11:55:33,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 627 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:33,316 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 443 flow [2022-12-13 11:55:33,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2022-12-13 11:55:33,316 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2022-12-13 11:55:33,316 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 443 flow [2022-12-13 11:55:33,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:33,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:33,317 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-12-13 11:55:33,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:33,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:33,518 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1042856023, now seen corresponding path program 2 times [2022-12-13 11:55:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:33,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994801887] [2022-12-13 11:55:33,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:33,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:33,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:33,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:33,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 11:55:33,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:55:33,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:33,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 11:55:33,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:33,684 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:33,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:55:33,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:33,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994801887] [2022-12-13 11:55:33,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994801887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:33,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:33,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728724239] [2022-12-13 11:55:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:33,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:33,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:33,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:33,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:33,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:33,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:34,728 INFO L130 PetriNetUnfolder]: 2414/4632 cut-off events. [2022-12-13 11:55:34,729 INFO L131 PetriNetUnfolder]: For 13592/13592 co-relation queries the response was YES. [2022-12-13 11:55:34,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17573 conditions, 4632 events. 2414/4632 cut-off events. For 13592/13592 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 32378 event pairs, 1026 based on Foata normal form. 54/4686 useless extension candidates. Maximal degree in co-relation 17530. Up to 3133 conditions per place. [2022-12-13 11:55:34,748 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 49 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2022-12-13 11:55:34,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 59 transitions, 589 flow [2022-12-13 11:55:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 452 transitions. [2022-12-13 11:55:34,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42641509433962266 [2022-12-13 11:55:34,749 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 452 transitions. [2022-12-13 11:55:34,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 452 transitions. [2022-12-13 11:55:34,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:34,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 452 transitions. [2022-12-13 11:55:34,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:34,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:34,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:34,753 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 443 flow. Second operand 4 states and 452 transitions. [2022-12-13 11:55:34,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 59 transitions, 589 flow [2022-12-13 11:55:34,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 59 transitions, 585 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 11:55:34,796 INFO L231 Difference]: Finished difference. Result has 83 places, 51 transitions, 470 flow [2022-12-13 11:55:34,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=83, PETRI_TRANSITIONS=51} [2022-12-13 11:55:34,797 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2022-12-13 11:55:34,797 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 51 transitions, 470 flow [2022-12-13 11:55:34,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:34,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:34,797 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:34,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 11:55:34,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:34,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:34,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1006137455, now seen corresponding path program 1 times [2022-12-13 11:55:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:35,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895624316] [2022-12-13 11:55:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:35,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:35,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 11:55:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:35,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 11:55:35,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:35,211 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:35,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:35,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:36,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:36,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895624316] [2022-12-13 11:55:36,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895624316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:36,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:36,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 11:55:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850583218] [2022-12-13 11:55:36,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 11:55:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 11:55:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:55:39,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 265 [2022-12-13 11:55:39,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 51 transitions, 470 flow. Second operand has 11 states, 11 states have (on average 101.81818181818181) internal successors, (1120), 11 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:39,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:39,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 265 [2022-12-13 11:55:39,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:43,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:55:44,142 INFO L130 PetriNetUnfolder]: 2354/4530 cut-off events. [2022-12-13 11:55:44,143 INFO L131 PetriNetUnfolder]: For 15898/15898 co-relation queries the response was YES. [2022-12-13 11:55:44,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17821 conditions, 4530 events. 2354/4530 cut-off events. For 15898/15898 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 32253 event pairs, 1658 based on Foata normal form. 20/4550 useless extension candidates. Maximal degree in co-relation 17775. Up to 4296 conditions per place. [2022-12-13 11:55:44,160 INFO L137 encePairwiseOnDemand]: 258/265 looper letters, 99 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2022-12-13 11:55:44,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 949 flow [2022-12-13 11:55:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 11:55:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 11:55:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1182 transitions. [2022-12-13 11:55:44,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40548885077186964 [2022-12-13 11:55:44,162 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1182 transitions. [2022-12-13 11:55:44,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1182 transitions. [2022-12-13 11:55:44,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:44,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1182 transitions. [2022-12-13 11:55:44,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.45454545454545) internal successors, (1182), 11 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:44,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:44,166 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:44,167 INFO L175 Difference]: Start difference. First operand has 83 places, 51 transitions, 470 flow. Second operand 11 states and 1182 transitions. [2022-12-13 11:55:44,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 949 flow [2022-12-13 11:55:44,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 920 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 11:55:44,202 INFO L231 Difference]: Finished difference. Result has 95 places, 59 transitions, 600 flow [2022-12-13 11:55:44,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=600, PETRI_PLACES=95, PETRI_TRANSITIONS=59} [2022-12-13 11:55:44,203 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 61 predicate places. [2022-12-13 11:55:44,203 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 59 transitions, 600 flow [2022-12-13 11:55:44,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 101.81818181818181) internal successors, (1120), 11 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:44,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:44,204 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:44,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 11:55:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:44,405 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash 760461450, now seen corresponding path program 2 times [2022-12-13 11:55:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:44,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166781634] [2022-12-13 11:55:44,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:44,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:44,407 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:44,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 11:55:44,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:55:44,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:44,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:55:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:44,588 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:44,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:55:44,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:55:44,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:44,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166781634] [2022-12-13 11:55:44,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166781634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:44,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:44,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:44,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054955060] [2022-12-13 11:55:44,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:55:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:55:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:55:44,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 265 [2022-12-13 11:55:44,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 59 transitions, 600 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:44,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:44,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 265 [2022-12-13 11:55:44,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:55:45,410 INFO L130 PetriNetUnfolder]: 1854/3672 cut-off events. [2022-12-13 11:55:45,410 INFO L131 PetriNetUnfolder]: For 13778/13778 co-relation queries the response was YES. [2022-12-13 11:55:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12915 conditions, 3672 events. 1854/3672 cut-off events. For 13778/13778 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 26104 event pairs, 1370 based on Foata normal form. 322/3994 useless extension candidates. Maximal degree in co-relation 12864. Up to 3659 conditions per place. [2022-12-13 11:55:45,425 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 50 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2022-12-13 11:55:45,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 57 transitions, 680 flow [2022-12-13 11:55:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:55:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2022-12-13 11:55:45,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4169811320754717 [2022-12-13 11:55:45,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2022-12-13 11:55:45,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2022-12-13 11:55:45,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:55:45,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2022-12-13 11:55:45,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:45,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:45,442 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:45,442 INFO L175 Difference]: Start difference. First operand has 95 places, 59 transitions, 600 flow. Second operand 4 states and 442 transitions. [2022-12-13 11:55:45,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 57 transitions, 680 flow [2022-12-13 11:55:45,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 57 transitions, 604 flow, removed 14 selfloop flow, removed 10 redundant places. [2022-12-13 11:55:45,472 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 504 flow [2022-12-13 11:55:45,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=504, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2022-12-13 11:55:45,472 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2022-12-13 11:55:45,473 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 504 flow [2022-12-13 11:55:45,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:45,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:55:45,473 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 11:55:45,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 11:55:45,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:45,673 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:55:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1346604802, now seen corresponding path program 3 times [2022-12-13 11:55:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:55:45,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715535480] [2022-12-13 11:55:45,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:55:45,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:55:45,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:55:45,675 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:55:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 11:55:45,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 11:55:45,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:55:45,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:45,876 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:55:45,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:55:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:46,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:55:48,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:55:48,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715535480] [2022-12-13 11:55:48,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715535480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:48,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:48,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 11:55:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817006399] [2022-12-13 11:55:48,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:48,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:55:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:55:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:55:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:55:56,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 265 [2022-12-13 11:55:56,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 504 flow. Second operand has 24 states, 24 states have (on average 106.0) internal successors, (2544), 24 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:55:56,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:55:56,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 265 [2022-12-13 11:55:56,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:13,390 INFO L130 PetriNetUnfolder]: 4386/8652 cut-off events. [2022-12-13 11:56:13,390 INFO L131 PetriNetUnfolder]: For 15364/15364 co-relation queries the response was YES. [2022-12-13 11:56:13,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27636 conditions, 8652 events. 4386/8652 cut-off events. For 15364/15364 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 64577 event pairs, 3230 based on Foata normal form. 12/8664 useless extension candidates. Maximal degree in co-relation 27592. Up to 1749 conditions per place. [2022-12-13 11:56:13,419 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 677 selfloop transitions, 24 changer transitions 0/701 dead transitions. [2022-12-13 11:56:13,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 701 transitions, 6385 flow [2022-12-13 11:56:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:56:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 11:56:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2842 transitions. [2022-12-13 11:56:13,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4468553459119497 [2022-12-13 11:56:13,424 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2842 transitions. [2022-12-13 11:56:13,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2842 transitions. [2022-12-13 11:56:13,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:13,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2842 transitions. [2022-12-13 11:56:13,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 118.41666666666667) internal successors, (2842), 24 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:13,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:13,432 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:13,433 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 504 flow. Second operand 24 states and 2842 transitions. [2022-12-13 11:56:13,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 701 transitions, 6385 flow [2022-12-13 11:56:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 701 transitions, 6104 flow, removed 106 selfloop flow, removed 3 redundant places. [2022-12-13 11:56:13,511 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 662 flow [2022-12-13 11:56:13,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=662, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2022-12-13 11:56:13,511 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 85 predicate places. [2022-12-13 11:56:13,512 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 662 flow [2022-12-13 11:56:13,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.0) internal successors, (2544), 24 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:13,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:13,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:13,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 11:56:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:13,714 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2102427984, now seen corresponding path program 1 times [2022-12-13 11:56:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806645617] [2022-12-13 11:56:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:13,719 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 11:56:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:56:13,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:56:13,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:56:13,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:13,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806645617] [2022-12-13 11:56:13,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806645617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:56:13,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:56:13,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:56:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609937052] [2022-12-13 11:56:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:56:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:56:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:56:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:56:13,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 265 [2022-12-13 11:56:13,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:13,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:13,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 265 [2022-12-13 11:56:13,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:14,909 INFO L130 PetriNetUnfolder]: 4386/8549 cut-off events. [2022-12-13 11:56:14,909 INFO L131 PetriNetUnfolder]: For 11061/11061 co-relation queries the response was YES. [2022-12-13 11:56:14,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26609 conditions, 8549 events. 4386/8549 cut-off events. For 11061/11061 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 62319 event pairs, 1906 based on Foata normal form. 103/8652 useless extension candidates. Maximal degree in co-relation 26553. Up to 5299 conditions per place. [2022-12-13 11:56:14,940 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 68 selfloop transitions, 6 changer transitions 3/77 dead transitions. [2022-12-13 11:56:14,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 77 transitions, 842 flow [2022-12-13 11:56:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:56:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:56:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2022-12-13 11:56:14,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4578616352201258 [2022-12-13 11:56:14,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2022-12-13 11:56:14,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2022-12-13 11:56:14,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:14,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2022-12-13 11:56:14,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:14,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:14,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:14,943 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 662 flow. Second operand 3 states and 364 transitions. [2022-12-13 11:56:14,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 77 transitions, 842 flow [2022-12-13 11:56:15,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 77 transitions, 794 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-12-13 11:56:15,029 INFO L231 Difference]: Finished difference. Result has 112 places, 69 transitions, 624 flow [2022-12-13 11:56:15,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=112, PETRI_TRANSITIONS=69} [2022-12-13 11:56:15,029 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 78 predicate places. [2022-12-13 11:56:15,029 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 69 transitions, 624 flow [2022-12-13 11:56:15,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:15,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:15,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:15,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 11:56:15,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:15,230 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1320905098, now seen corresponding path program 1 times [2022-12-13 11:56:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:15,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647205861] [2022-12-13 11:56:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:15,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:15,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:15,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 11:56:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:15,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 11:56:15,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:15,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:15,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:15,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:15,659 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-12-13 11:56:15,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-12-13 11:56:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:15,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:15,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647205861] [2022-12-13 11:56:15,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647205861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:15,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:15,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2022-12-13 11:56:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211265636] [2022-12-13 11:56:15,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:15,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:56:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:56:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:56:15,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 265 [2022-12-13 11:56:15,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 69 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 107.33333333333333) internal successors, (966), 9 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:15,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:15,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 265 [2022-12-13 11:56:15,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:18,119 INFO L130 PetriNetUnfolder]: 7368/14080 cut-off events. [2022-12-13 11:56:18,119 INFO L131 PetriNetUnfolder]: For 22112/22112 co-relation queries the response was YES. [2022-12-13 11:56:18,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45828 conditions, 14080 events. 7368/14080 cut-off events. For 22112/22112 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 111080 event pairs, 1165 based on Foata normal form. 104/14184 useless extension candidates. Maximal degree in co-relation 45770. Up to 5797 conditions per place. [2022-12-13 11:56:18,179 INFO L137 encePairwiseOnDemand]: 260/265 looper letters, 84 selfloop transitions, 19 changer transitions 9/112 dead transitions. [2022-12-13 11:56:18,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 112 transitions, 1117 flow [2022-12-13 11:56:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:56:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:56:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2022-12-13 11:56:18,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4249056603773585 [2022-12-13 11:56:18,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2022-12-13 11:56:18,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2022-12-13 11:56:18,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:18,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2022-12-13 11:56:18,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:18,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:18,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:18,185 INFO L175 Difference]: Start difference. First operand has 112 places, 69 transitions, 624 flow. Second operand 5 states and 563 transitions. [2022-12-13 11:56:18,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 112 transitions, 1117 flow [2022-12-13 11:56:18,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1093 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 11:56:18,524 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 779 flow [2022-12-13 11:56:18,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=779, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2022-12-13 11:56:18,524 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 79 predicate places. [2022-12-13 11:56:18,524 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 779 flow [2022-12-13 11:56:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.33333333333333) internal successors, (966), 9 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:18,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:18,525 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:18,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 11:56:18,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:18,726 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash -764497526, now seen corresponding path program 2 times [2022-12-13 11:56:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:18,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140749258] [2022-12-13 11:56:18,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:56:18,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:18,733 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:18,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 11:56:18,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:18,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:18,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:56:18,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:18,891 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 39 treesize of output 37 [2022-12-13 11:56:19,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 11:56:19,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:19,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:19,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:19,364 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-12-13 11:56:19,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 147 treesize of output 105 [2022-12-13 11:56:19,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:19,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 9 [2022-12-13 11:56:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:19,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140749258] [2022-12-13 11:56:19,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140749258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:19,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:19,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 11:56:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856299594] [2022-12-13 11:56:19,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:19,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:56:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:56:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=99, Unknown=3, NotChecked=0, Total=132 [2022-12-13 11:56:20,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 265 [2022-12-13 11:56:20,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 779 flow. Second operand has 12 states, 12 states have (on average 100.5) internal successors, (1206), 12 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:20,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:20,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 265 [2022-12-13 11:56:20,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:22,225 INFO L130 PetriNetUnfolder]: 7368/13976 cut-off events. [2022-12-13 11:56:22,225 INFO L131 PetriNetUnfolder]: For 25687/25687 co-relation queries the response was YES. [2022-12-13 11:56:22,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48420 conditions, 13976 events. 7368/13976 cut-off events. For 25687/25687 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 108626 event pairs, 1870 based on Foata normal form. 104/14080 useless extension candidates. Maximal degree in co-relation 48361. Up to 5756 conditions per place. [2022-12-13 11:56:22,281 INFO L137 encePairwiseOnDemand]: 261/265 looper letters, 70 selfloop transitions, 23 changer transitions 9/102 dead transitions. [2022-12-13 11:56:22,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 102 transitions, 1061 flow [2022-12-13 11:56:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:56:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:56:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2022-12-13 11:56:22,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40150943396226413 [2022-12-13 11:56:22,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2022-12-13 11:56:22,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2022-12-13 11:56:22,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:22,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2022-12-13 11:56:22,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:22,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:22,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:22,285 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 779 flow. Second operand 5 states and 532 transitions. [2022-12-13 11:56:22,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 102 transitions, 1061 flow [2022-12-13 11:56:22,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 102 transitions, 1047 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:56:22,565 INFO L231 Difference]: Finished difference. Result has 116 places, 80 transitions, 833 flow [2022-12-13 11:56:22,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=833, PETRI_PLACES=116, PETRI_TRANSITIONS=80} [2022-12-13 11:56:22,565 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2022-12-13 11:56:22,565 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 80 transitions, 833 flow [2022-12-13 11:56:22,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.5) internal successors, (1206), 12 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:22,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:22,566 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:22,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:22,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:22,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash -903628707, now seen corresponding path program 3 times [2022-12-13 11:56:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:22,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156511110] [2022-12-13 11:56:22,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:56:22,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:22,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:22,774 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:22,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 11:56:22,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:56:22,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:22,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:56:22,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:22,969 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:56:22,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:56:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:23,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:23,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:23,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156511110] [2022-12-13 11:56:23,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156511110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:23,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:23,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2022-12-13 11:56:23,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21367933] [2022-12-13 11:56:23,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:23,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 11:56:23,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 11:56:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:56:24,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 265 [2022-12-13 11:56:24,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 80 transitions, 833 flow. Second operand has 11 states, 11 states have (on average 102.45454545454545) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:24,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:24,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 265 [2022-12-13 11:56:24,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:27,757 INFO L130 PetriNetUnfolder]: 7196/13656 cut-off events. [2022-12-13 11:56:27,757 INFO L131 PetriNetUnfolder]: For 38632/38632 co-relation queries the response was YES. [2022-12-13 11:56:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49361 conditions, 13656 events. 7196/13656 cut-off events. For 38632/38632 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 106969 event pairs, 5098 based on Foata normal form. 8/13664 useless extension candidates. Maximal degree in co-relation 49301. Up to 13524 conditions per place. [2022-12-13 11:56:27,804 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 66 selfloop transitions, 4 changer transitions 27/97 dead transitions. [2022-12-13 11:56:27,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 97 transitions, 1000 flow [2022-12-13 11:56:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:56:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:56:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 845 transitions. [2022-12-13 11:56:27,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39858490566037735 [2022-12-13 11:56:27,806 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 845 transitions. [2022-12-13 11:56:27,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 845 transitions. [2022-12-13 11:56:27,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:27,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 845 transitions. [2022-12-13 11:56:27,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.625) internal successors, (845), 8 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:27,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:27,808 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:27,808 INFO L175 Difference]: Start difference. First operand has 116 places, 80 transitions, 833 flow. Second operand 8 states and 845 transitions. [2022-12-13 11:56:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 97 transitions, 1000 flow [2022-12-13 11:56:28,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 97 transitions, 944 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-13 11:56:28,003 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 640 flow [2022-12-13 11:56:28,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2022-12-13 11:56:28,003 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 80 predicate places. [2022-12-13 11:56:28,003 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 640 flow [2022-12-13 11:56:28,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 102.45454545454545) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:28,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:28,004 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:28,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 11:56:28,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:28,205 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:28,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:28,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1647411420, now seen corresponding path program 4 times [2022-12-13 11:56:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:28,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730144937] [2022-12-13 11:56:28,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:28,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:28,210 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:28,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 11:56:28,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:28,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:28,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:56:28,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:28,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:28,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:28,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:28,726 INFO L321 Elim1Store]: treesize reduction 156, result has 3.1 percent of original size [2022-12-13 11:56:28,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 25 [2022-12-13 11:56:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:56:28,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730144937] [2022-12-13 11:56:28,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730144937] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:28,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:28,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2022-12-13 11:56:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866043603] [2022-12-13 11:56:28,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:28,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:56:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:28,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:56:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:56:29,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 265 [2022-12-13 11:56:29,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 640 flow. Second operand has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:29,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:29,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 265 [2022-12-13 11:56:29,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:31,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:56:35,223 INFO L130 PetriNetUnfolder]: 10782/20186 cut-off events. [2022-12-13 11:56:35,223 INFO L131 PetriNetUnfolder]: For 34999/34999 co-relation queries the response was YES. [2022-12-13 11:56:35,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68037 conditions, 20186 events. 10782/20186 cut-off events. For 34999/34999 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 165684 event pairs, 940 based on Foata normal form. 20/20206 useless extension candidates. Maximal degree in co-relation 67980. Up to 4801 conditions per place. [2022-12-13 11:56:35,327 INFO L137 encePairwiseOnDemand]: 259/265 looper letters, 128 selfloop transitions, 38 changer transitions 34/200 dead transitions. [2022-12-13 11:56:35,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 200 transitions, 1567 flow [2022-12-13 11:56:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 11:56:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 11:56:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1982 transitions. [2022-12-13 11:56:35,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41551362683438153 [2022-12-13 11:56:35,330 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1982 transitions. [2022-12-13 11:56:35,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1982 transitions. [2022-12-13 11:56:35,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:35,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1982 transitions. [2022-12-13 11:56:35,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 110.11111111111111) internal successors, (1982), 18 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:35,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 265.0) internal successors, (5035), 19 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:35,336 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 265.0) internal successors, (5035), 19 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:35,336 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 640 flow. Second operand 18 states and 1982 transitions. [2022-12-13 11:56:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 200 transitions, 1567 flow [2022-12-13 11:56:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 200 transitions, 1546 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 11:56:35,809 INFO L231 Difference]: Finished difference. Result has 121 places, 85 transitions, 865 flow [2022-12-13 11:56:35,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=865, PETRI_PLACES=121, PETRI_TRANSITIONS=85} [2022-12-13 11:56:35,809 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 87 predicate places. [2022-12-13 11:56:35,809 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 85 transitions, 865 flow [2022-12-13 11:56:35,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:35,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:35,809 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:35,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-13 11:56:36,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:36,011 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1730121956, now seen corresponding path program 5 times [2022-12-13 11:56:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:36,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84690229] [2022-12-13 11:56:36,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:56:36,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:36,016 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:36,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 11:56:36,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 11:56:36,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:56:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:36,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:36,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:56:36,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:36,460 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-12-13 11:56:36,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2022-12-13 11:56:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:56:36,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:36,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84690229] [2022-12-13 11:56:36,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84690229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:36,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:36,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 10 [2022-12-13 11:56:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194746429] [2022-12-13 11:56:36,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:56:36,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:56:36,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:56:36,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 265 [2022-12-13 11:56:36,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 85 transitions, 865 flow. Second operand has 12 states, 12 states have (on average 106.83333333333333) internal successors, (1282), 12 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:36,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:36,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 265 [2022-12-13 11:56:36,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:40,169 INFO L130 PetriNetUnfolder]: 10782/20106 cut-off events. [2022-12-13 11:56:40,169 INFO L131 PetriNetUnfolder]: For 49978/49978 co-relation queries the response was YES. [2022-12-13 11:56:40,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72215 conditions, 20106 events. 10782/20106 cut-off events. For 49978/49978 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 163982 event pairs, 1020 based on Foata normal form. 80/20186 useless extension candidates. Maximal degree in co-relation 72159. Up to 6020 conditions per place. [2022-12-13 11:56:40,244 INFO L137 encePairwiseOnDemand]: 260/265 looper letters, 89 selfloop transitions, 33 changer transitions 53/175 dead transitions. [2022-12-13 11:56:40,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 175 transitions, 1473 flow [2022-12-13 11:56:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 11:56:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 11:56:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1686 transitions. [2022-12-13 11:56:40,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4241509433962264 [2022-12-13 11:56:40,246 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1686 transitions. [2022-12-13 11:56:40,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1686 transitions. [2022-12-13 11:56:40,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:40,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1686 transitions. [2022-12-13 11:56:40,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 112.4) internal successors, (1686), 15 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:40,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 265.0) internal successors, (4240), 16 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:40,250 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 265.0) internal successors, (4240), 16 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:40,251 INFO L175 Difference]: Start difference. First operand has 121 places, 85 transitions, 865 flow. Second operand 15 states and 1686 transitions. [2022-12-13 11:56:40,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 175 transitions, 1473 flow [2022-12-13 11:56:40,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 175 transitions, 1381 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-12-13 11:56:40,797 INFO L231 Difference]: Finished difference. Result has 131 places, 85 transitions, 879 flow [2022-12-13 11:56:40,798 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=879, PETRI_PLACES=131, PETRI_TRANSITIONS=85} [2022-12-13 11:56:40,798 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2022-12-13 11:56:40,798 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 85 transitions, 879 flow [2022-12-13 11:56:40,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.83333333333333) internal successors, (1282), 12 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:40,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:40,798 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:40,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-13 11:56:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:41,000 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1735339544, now seen corresponding path program 6 times [2022-12-13 11:56:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:41,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179163435] [2022-12-13 11:56:41,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:56:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:41,006 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:41,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-13 11:56:41,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 11:56:41,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:41,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 11:56:41,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:41,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-12-13 11:56:41,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-12-13 11:56:41,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:41,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:41,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:41,760 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_594) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv7 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv6 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv5 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv4 32) .cse1)))) (_ bv5 32))) is different from false [2022-12-13 11:56:41,880 INFO L321 Elim1Store]: treesize reduction 120, result has 25.5 percent of original size [2022-12-13 11:56:41,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 149 treesize of output 106 [2022-12-13 11:56:41,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:41,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 9 [2022-12-13 11:56:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2022-12-13 11:56:42,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:42,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179163435] [2022-12-13 11:56:42,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179163435] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:42,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:42,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-12-13 11:56:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959744179] [2022-12-13 11:56:42,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:56:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:56:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272 [2022-12-13 11:56:42,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 265 [2022-12-13 11:56:42,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 85 transitions, 879 flow. Second operand has 17 states, 17 states have (on average 85.05882352941177) internal successors, (1446), 17 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:42,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:42,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 265 [2022-12-13 11:56:42,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:56:45,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:47,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:47,504 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_594 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_594) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv7 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv6 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv5 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv4 32) .cse1)))) (_ bv5 32))) (exists ((v_arrayElimCell_64 (_ BitVec 8)) (v_arrayElimCell_61 (_ BitVec 8)) (v_arrayElimCell_63 (_ BitVec 8)) (v_arrayElimCell_62 (_ BitVec 8))) (let ((.cse2 (concat (concat (concat v_arrayElimCell_64 v_arrayElimCell_61) v_arrayElimCell_62) v_arrayElimCell_63))) (and (= .cse2 c_~x~0) (= .cse2 (_ bv5 32))))) (= c_~x~0 (_ bv5 32))) is different from false [2022-12-13 11:56:49,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 11:56:52,821 INFO L130 PetriNetUnfolder]: 12382/23146 cut-off events. [2022-12-13 11:56:52,821 INFO L131 PetriNetUnfolder]: For 60278/60278 co-relation queries the response was YES. [2022-12-13 11:56:52,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84176 conditions, 23146 events. 12382/23146 cut-off events. For 60278/60278 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 192077 event pairs, 1060 based on Foata normal form. 20/23166 useless extension candidates. Maximal degree in co-relation 84118. Up to 5801 conditions per place. [2022-12-13 11:56:52,946 INFO L137 encePairwiseOnDemand]: 254/265 looper letters, 87 selfloop transitions, 64 changer transitions 41/192 dead transitions. [2022-12-13 11:56:52,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 192 transitions, 1812 flow [2022-12-13 11:56:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 11:56:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 11:56:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1531 transitions. [2022-12-13 11:56:52,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3398446170921199 [2022-12-13 11:56:52,950 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1531 transitions. [2022-12-13 11:56:52,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1531 transitions. [2022-12-13 11:56:52,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:56:52,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1531 transitions. [2022-12-13 11:56:52,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 90.05882352941177) internal successors, (1531), 17 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:52,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:52,955 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 265.0) internal successors, (4770), 18 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:52,955 INFO L175 Difference]: Start difference. First operand has 131 places, 85 transitions, 879 flow. Second operand 17 states and 1531 transitions. [2022-12-13 11:56:52,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 192 transitions, 1812 flow [2022-12-13 11:56:53,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 192 transitions, 1733 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-12-13 11:56:53,744 INFO L231 Difference]: Finished difference. Result has 141 places, 114 transitions, 1323 flow [2022-12-13 11:56:53,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1323, PETRI_PLACES=141, PETRI_TRANSITIONS=114} [2022-12-13 11:56:53,744 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 107 predicate places. [2022-12-13 11:56:53,744 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 114 transitions, 1323 flow [2022-12-13 11:56:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 85.05882352941177) internal successors, (1446), 17 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:53,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:56:53,745 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:53,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:53,946 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:56:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -417664394, now seen corresponding path program 7 times [2022-12-13 11:56:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:56:53,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701462261] [2022-12-13 11:56:53,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:56:53,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:56:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:56:53,951 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:56:53,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-13 11:56:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:54,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 11:56:54,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:54,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-12-13 11:56:54,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 11:56:54,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2022-12-13 11:56:54,431 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:54,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2022-12-13 11:56:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:56:54,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:54,626 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv5 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_629) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv7 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv6 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv5 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv4 32) .cse1)))))) is different from false [2022-12-13 11:56:55,112 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-12-13 11:56:55,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 304 treesize of output 260 [2022-12-13 11:56:55,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 11:56:55,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:55,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 159 treesize of output 131 [2022-12-13 11:56:55,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:56:55,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 66 [2022-12-13 11:56:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2022-12-13 11:56:56,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:56:56,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701462261] [2022-12-13 11:56:56,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701462261] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:56,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:56,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-12-13 11:56:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432096257] [2022-12-13 11:56:56,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:56:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:56:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:56:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2022-12-13 11:56:56,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 265 [2022-12-13 11:56:56,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 114 transitions, 1323 flow. Second operand has 17 states, 17 states have (on average 78.05882352941177) internal successors, (1327), 17 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:56:56,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:56:56,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 265 [2022-12-13 11:56:56,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:57:01,422 INFO L130 PetriNetUnfolder]: 12982/24366 cut-off events. [2022-12-13 11:57:01,422 INFO L131 PetriNetUnfolder]: For 95938/95938 co-relation queries the response was YES. [2022-12-13 11:57:01,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120702 conditions, 24366 events. 12982/24366 cut-off events. For 95938/95938 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 205006 event pairs, 2320 based on Foata normal form. 20/24386 useless extension candidates. Maximal degree in co-relation 120639. Up to 13121 conditions per place. [2022-12-13 11:57:01,570 INFO L137 encePairwiseOnDemand]: 257/265 looper letters, 91 selfloop transitions, 63 changer transitions 32/186 dead transitions. [2022-12-13 11:57:01,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 186 transitions, 2156 flow [2022-12-13 11:57:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:57:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 11:57:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1086 transitions. [2022-12-13 11:57:01,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.31523947750362846 [2022-12-13 11:57:01,573 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1086 transitions. [2022-12-13 11:57:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1086 transitions. [2022-12-13 11:57:01,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:57:01,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1086 transitions. [2022-12-13 11:57:01,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.53846153846153) internal successors, (1086), 13 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:01,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 265.0) internal successors, (3710), 14 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:01,577 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 265.0) internal successors, (3710), 14 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:01,577 INFO L175 Difference]: Start difference. First operand has 141 places, 114 transitions, 1323 flow. Second operand 13 states and 1086 transitions. [2022-12-13 11:57:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 186 transitions, 2156 flow [2022-12-13 11:57:02,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 186 transitions, 2098 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-12-13 11:57:02,897 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1555 flow [2022-12-13 11:57:02,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1555, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2022-12-13 11:57:02,898 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 116 predicate places. [2022-12-13 11:57:02,898 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1555 flow [2022-12-13 11:57:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.05882352941177) internal successors, (1327), 17 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:02,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:57:02,898 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:02,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-13 11:57:03,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:57:03,099 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:57:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1975091425, now seen corresponding path program 8 times [2022-12-13 11:57:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:57:03,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54738984] [2022-12-13 11:57:03,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:57:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:57:03,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:57:03,105 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:57:03,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-13 11:57:03,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:57:03,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:03,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:57:03,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:57:03,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 11:57:03,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:57:03,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54738984] [2022-12-13 11:57:03,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54738984] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:03,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:57:03,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 11:57:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27685270] [2022-12-13 11:57:03,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:57:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:57:03,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:57:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:57:03,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 265 [2022-12-13 11:57:03,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1555 flow. Second operand has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:03,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:57:03,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 265 [2022-12-13 11:57:03,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:57:08,835 INFO L130 PetriNetUnfolder]: 18682/35586 cut-off events. [2022-12-13 11:57:08,835 INFO L131 PetriNetUnfolder]: For 209678/209678 co-relation queries the response was YES. [2022-12-13 11:57:08,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198447 conditions, 35586 events. 18682/35586 cut-off events. For 209678/209678 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 323450 event pairs, 3840 based on Foata normal form. 620/36206 useless extension candidates. Maximal degree in co-relation 198379. Up to 20141 conditions per place. [2022-12-13 11:57:09,058 INFO L137 encePairwiseOnDemand]: 262/265 looper letters, 108 selfloop transitions, 55 changer transitions 14/177 dead transitions. [2022-12-13 11:57:09,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 177 transitions, 2458 flow [2022-12-13 11:57:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:57:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:57:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2022-12-13 11:57:09,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4671698113207547 [2022-12-13 11:57:09,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2022-12-13 11:57:09,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2022-12-13 11:57:09,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:57:09,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2022-12-13 11:57:09,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:09,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:09,062 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:09,062 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1555 flow. Second operand 5 states and 619 transitions. [2022-12-13 11:57:09,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 177 transitions, 2458 flow [2022-12-13 11:57:11,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 177 transitions, 2329 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-12-13 11:57:11,097 INFO L231 Difference]: Finished difference. Result has 147 places, 136 transitions, 1760 flow [2022-12-13 11:57:11,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1760, PETRI_PLACES=147, PETRI_TRANSITIONS=136} [2022-12-13 11:57:11,098 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 113 predicate places. [2022-12-13 11:57:11,098 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 136 transitions, 1760 flow [2022-12-13 11:57:11,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.125) internal successors, (945), 8 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:57:11,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:57:11,098 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:11,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-12-13 11:57:11,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:57:11,299 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:57:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash -512521847, now seen corresponding path program 9 times [2022-12-13 11:57:11,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 11:57:11,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766257900] [2022-12-13 11:57:11,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:57:11,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:57:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 11:57:11,305 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 11:57:11,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-13 11:57:11,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 11:57:11,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:11,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 11:57:11,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:11,537 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 11:57:11,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-13 11:57:11,619 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 17 treesize of output 13 [2022-12-13 11:57:12,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:12,168 INFO L321 Elim1Store]: treesize reduction 124, result has 9.5 percent of original size [2022-12-13 11:57:12,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 54 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 118 treesize of output 40 [2022-12-13 11:57:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:57:12,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:19,155 INFO L321 Elim1Store]: treesize reduction 762, result has 2.2 percent of original size [2022-12-13 11:57:19,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 159 treesize of output 46 [2022-12-13 11:57:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:57:22,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 11:57:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766257900] [2022-12-13 11:57:22,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766257900] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:22,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:57:22,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-12-13 11:57:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152966510] [2022-12-13 11:57:22,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:57:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 11:57:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:57:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=186, Unknown=2, NotChecked=0, Total=240 [2022-12-13 11:57:28,129 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-13 11:57:28,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2022-12-13 11:57:28,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-13 11:57:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 11:57:28,332 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.push(ManagedScript.java:124) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertPostcondInternal(IncrementalHoareTripleChecker.java:538) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertPostcond(IncrementalHoareTripleChecker.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddPostcond(IncrementalHoareTripleChecker.java:248) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.ILooperCheck$HoareLooperCheck.isUniversalLooper(ILooperCheck.java:122) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.ILooperCheck$HoareLooperCheck.isUniversalLooper(ILooperCheck.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.lambda$2(CegarLoopForPetriNet.java:571) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:176) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.determineUniversalSubtrahendLoopers(CegarLoopForPetriNet.java:572) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:476) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 46 more [2022-12-13 11:57:28,339 INFO L158 Benchmark]: Toolchain (without parser) took 164347.87ms. Allocated memory was 62.9MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 33.7MB in the beginning and 439.7MB in the end (delta: -406.0MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-12-13 11:57:28,340 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:57:28,341 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.57ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 33.4MB in the beginning and 64.5MB in the end (delta: -31.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-12-13 11:57:28,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:57:28,342 INFO L158 Benchmark]: Boogie Preprocessor took 30.26ms. Allocated memory is still 90.2MB. Free memory was 62.4MB in the beginning and 60.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:57:28,342 INFO L158 Benchmark]: RCFGBuilder took 582.78ms. Allocated memory is still 90.2MB. Free memory was 60.6MB in the beginning and 48.1MB in the end (delta: 12.5MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-12-13 11:57:28,342 INFO L158 Benchmark]: TraceAbstraction took 163465.96ms. Allocated memory was 90.2MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 47.2MB in the beginning and 439.7MB in the end (delta: -392.4MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-12-13 11:57:28,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.57ms. Allocated memory was 62.9MB in the beginning and 90.2MB in the end (delta: 27.3MB). Free memory was 33.4MB in the beginning and 64.5MB in the end (delta: -31.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 62.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.26ms. Allocated memory is still 90.2MB. Free memory was 62.4MB in the beginning and 60.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.78ms. Allocated memory is still 90.2MB. Free memory was 60.6MB in the beginning and 48.1MB in the end (delta: 12.5MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 163465.96ms. Allocated memory was 90.2MB in the beginning and 2.5GB in the end (delta: 2.4GB). Free memory was 47.2MB in the beginning and 439.7MB in the end (delta: -392.4MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.3s, 123 PlacesBefore, 34 PlacesAfterwards, 125 TransitionsBefore, 30 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 6 ConcurrentYvCompositions, 6 ChoiceCompositions, 133 TotalNumberOfCompositions, 889 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 864, independent: 856, independent conditional: 0, independent unconditional: 856, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 358, independent: 354, independent conditional: 0, independent unconditional: 354, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 864, independent: 502, independent conditional: 0, independent unconditional: 502, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 358, unknown conditional: 0, unknown unconditional: 358] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca07e162-f997-4a72-8619-5282532f0aab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")