./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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_2e23b273-da56-44a1-9dca-9fb7823aa395/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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- 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 12:28:36,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:28:36,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:28:36,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:28:36,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:28:36,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:28:36,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:28:36,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:28:36,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:28:36,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:28:36,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:28:36,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:28:36,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:28:36,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:28:36,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:28:36,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:28:36,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:28:36,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:28:36,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:28:36,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:28:36,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:28:36,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:28:36,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:28:36,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:28:36,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:28:36,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:28:36,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:28:36,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:28:36,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:28:36,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:28:36,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:28:36,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:28:36,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:28:36,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:28:36,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:28:36,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:28:36,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:28:36,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:28:36,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:28:36,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:28:36,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:28:36,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:28:36,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:28:36,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:28:36,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:28:36,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:28:36,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:28:36,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:28:36,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:28:36,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:28:36,280 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:28:36,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:28:36,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:28:36,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:28:36,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:28:36,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:28:36,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:28:36,281 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:28:36,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:28:36,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:28:36,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:28:36,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:28:36,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:36,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:28:36,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:28:36,285 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:28:36,285 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_2e23b273-da56-44a1-9dca-9fb7823aa395/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-12-13 12:28:36,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:28:36,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:28:36,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:28:36,502 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:28:36,502 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:28:36,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 12:28:39,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:28:39,318 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:28:39,319 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 12:28:39,325 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/6e2e404ef/ac8ea0c23ee54fe1ab932e9ee7498c86/FLAG2a7d4f337 [2022-12-13 12:28:39,337 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/6e2e404ef/ac8ea0c23ee54fe1ab932e9ee7498c86 [2022-12-13 12:28:39,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:28:39,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:28:39,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:39,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:28:39,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:28:39,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:39" (1/1) ... [2022-12-13 12:28:39,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519bbc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:39, skipping insertion in model container [2022-12-13 12:28:39,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:39" (1/1) ... [2022-12-13 12:28:39,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:28:39,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:39,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:39,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:39,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:39,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:39,515 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_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 12:28:39,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:39,533 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 12:28:39,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2706066e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:39, skipping insertion in model container [2022-12-13 12:28:39,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:39,534 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 12:28:39,536 INFO L158 Benchmark]: Toolchain (without parser) took 194.68ms. Allocated memory is still 132.1MB. Free memory was 91.0MB in the beginning and 80.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:28:39,536 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:28:39,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.99ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 80.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 12:28:39,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.99ms. Allocated memory is still 132.1MB. Free memory was 90.6MB in the beginning and 80.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 95]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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_2e23b273-da56-44a1-9dca-9fb7823aa395/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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- 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 12:28:40,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:28:41,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:28:41,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:28:41,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:28:41,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:28:41,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:28:41,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:28:41,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:28:41,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:28:41,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:28:41,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:28:41,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:28:41,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:28:41,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:28:41,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:28:41,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:28:41,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:28:41,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:28:41,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:28:41,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:28:41,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:28:41,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:28:41,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:28:41,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:28:41,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:28:41,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:28:41,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:28:41,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:28:41,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:28:41,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:28:41,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:28:41,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:28:41,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:28:41,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:28:41,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:28:41,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:28:41,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:28:41,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:28:41,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:28:41,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:28:41,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 12:28:41,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:28:41,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:28:41,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:28:41,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:28:41,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:28:41,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:28:41,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:28:41,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:28:41,084 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:28:41,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:28:41,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:28:41,085 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:28:41,086 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:28:41,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:28:41,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:28:41,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 12:28:41,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 12:28:41,087 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:28:41,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:28:41,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:28:41,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:28:41,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:28:41,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:41,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:28:41,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:28:41,088 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 12:28:41,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 12:28:41,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:28:41,089 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:28:41,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:28:41,089 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 12:28:41,089 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:28:41,090 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_2e23b273-da56-44a1-9dca-9fb7823aa395/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2022-12-13 12:28:41,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:28:41,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:28:41,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:28:41,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:28:41,324 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:28:41,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 12:28:43,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:28:44,090 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:28:44,091 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2022-12-13 12:28:44,097 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/a3c95f358/23eceb00c1f04cd6ada00fcdd1661a1a/FLAG4ac99160e [2022-12-13 12:28:44,111 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/data/a3c95f358/23eceb00c1f04cd6ada00fcdd1661a1a [2022-12-13 12:28:44,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:28:44,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:28:44,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:44,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:28:44,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:28:44,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b810520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44, skipping insertion in model container [2022-12-13 12:28:44,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:28:44,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:44,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,288 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_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 12:28:44,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:44,306 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 12:28:44,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:44,314 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,315 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,319 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_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 12:28:44,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:44,326 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:28:44,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:44,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:44,346 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_2e23b273-da56-44a1-9dca-9fb7823aa395/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c[2438,2451] [2022-12-13 12:28:44,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:44,360 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:28:44,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44 WrapperNode [2022-12-13 12:28:44,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:44,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:44,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:28:44,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:28:44,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,403 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 125 [2022-12-13 12:28:44,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:44,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:28:44,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:28:44,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:28:44,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:28:44,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:28:44,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:28:44,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:28:44,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (1/1) ... [2022-12-13 12:28:44,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:44,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:44,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:28:44,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:28:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:28:44,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 12:28:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:28:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 12:28:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:28:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:28:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:28:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:28:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:28:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:28:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:28:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:28:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:28:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:28:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 12:28:44,505 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 12:28:44,587 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:28:44,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:28:44,909 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:28:45,020 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:28:45,021 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 12:28:45,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:45 BoogieIcfgContainer [2022-12-13 12:28:45,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:28:45,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:28:45,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:28:45,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:28:45,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:28:44" (1/3) ... [2022-12-13 12:28:45,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57afa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:45, skipping insertion in model container [2022-12-13 12:28:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:44" (2/3) ... [2022-12-13 12:28:45,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57afa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:45, skipping insertion in model container [2022-12-13 12:28:45,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:45" (3/3) ... [2022-12-13 12:28:45,031 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-12-13 12:28:45,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:28:45,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 12:28:45,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:28:45,101 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:28:45,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 286 flow [2022-12-13 12:28:45,178 INFO L130 PetriNetUnfolder]: 9/133 cut-off events. [2022-12-13 12:28:45,178 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:45,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 9/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-13 12:28:45,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 135 transitions, 286 flow [2022-12-13 12:28:45,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 268 flow [2022-12-13 12:28:45,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:45,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 268 flow [2022-12-13 12:28:45,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 268 flow [2022-12-13 12:28:45,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 268 flow [2022-12-13 12:28:45,236 INFO L130 PetriNetUnfolder]: 9/128 cut-off events. [2022-12-13 12:28:45,236 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:28:45,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 128 events. 9/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-13 12:28:45,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2022-12-13 12:28:57,773 INFO L134 LiptonReduction]: Checked pairs total: 923 [2022-12-13 12:28:57,773 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-12-13 12:28:57,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:57,788 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;@3bae3608, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:57,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 12:28:57,790 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:28:57,790 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:57,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:57,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:28:57,791 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 12:28:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 18622, now seen corresponding path program 1 times [2022-12-13 12:28:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:28:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81303588] [2022-12-13 12:28:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:57,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:28:57,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:28:57,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:57,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:28:57,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:57,961 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 12:28:57,962 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 12:28:57,981 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 12:28:57,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:28:57,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:28:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81303588] [2022-12-13 12:28:57,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81303588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:57,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:57,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:28:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247518530] [2022-12-13 12:28:57,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:57,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:28:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:58,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:28:58,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:58,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:28:58,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:58,235 INFO L130 PetriNetUnfolder]: 146/249 cut-off events. [2022-12-13 12:28:58,236 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 12:28:58,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 249 events. 146/249 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 814 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 12:28:58,240 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 12:28:58,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 124 flow [2022-12-13 12:28:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-12-13 12:28:58,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43884892086330934 [2022-12-13 12:28:58,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-12-13 12:28:58,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-12-13 12:28:58,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:58,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-12-13 12:28:58,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,274 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,276 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 72 flow. Second operand 3 states and 366 transitions. [2022-12-13 12:28:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 124 flow [2022-12-13 12:28:58,279 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 12:28:58,281 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 62 flow [2022-12-13 12:28:58,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, 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 12:28:58,286 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-12-13 12:28:58,286 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 62 flow [2022-12-13 12:28:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:58,287 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:28:58,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:58,488 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 12:28:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash 18623, now seen corresponding path program 1 times [2022-12-13 12:28:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:28:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878992731] [2022-12-13 12:28:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:58,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:28:58,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:28:58,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:58,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:28:58,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:58,637 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:28:58,637 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 12:28:58,657 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 12:28:58,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:28:58,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:28:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878992731] [2022-12-13 12:28:58,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878992731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:58,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:58,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:28:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456098967] [2022-12-13 12:28:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:58,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:58,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:28:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:58,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:28:58,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:58,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:58,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:28:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:58,993 INFO L130 PetriNetUnfolder]: 291/496 cut-off events. [2022-12-13 12:28:58,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:58,994 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 2010 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 12:28:58,996 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 12:28:58,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 226 flow [2022-12-13 12:28:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-12-13 12:28:58,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46882494004796166 [2022-12-13 12:28:58,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-12-13 12:28:58,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-12-13 12:28:58,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:58,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-12-13 12:28:58,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,001 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 62 flow. Second operand 3 states and 391 transitions. [2022-12-13 12:28:59,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 226 flow [2022-12-13 12:28:59,002 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 12:28:59,002 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 73 flow [2022-12-13 12:28:59,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, 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 12:28:59,003 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2022-12-13 12:28:59,003 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 73 flow [2022-12-13 12:28:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:59,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:28:59,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:59,208 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 12:28:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash 18735, now seen corresponding path program 1 times [2022-12-13 12:28:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:28:59,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114199117] [2022-12-13 12:28:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:59,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:59,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:28:59,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:28:59,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:59,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:28:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:59,283 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-13 12:28:59,283 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 12:28:59,312 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 12:28:59,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:28:59,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:28:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114199117] [2022-12-13 12:28:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114199117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:28:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193938168] [2022-12-13 12:28:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:59,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:28:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:28:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:28:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:28:59,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:28:59,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:59,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:28:59,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:28:59,557 INFO L130 PetriNetUnfolder]: 227/398 cut-off events. [2022-12-13 12:28:59,557 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:59,558 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 1548 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 12:28:59,560 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 12:28:59,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 123 flow [2022-12-13 12:28:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:28:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:28:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2022-12-13 12:28:59,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4364508393285372 [2022-12-13 12:28:59,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2022-12-13 12:28:59,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2022-12-13 12:28:59,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:28:59,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2022-12-13 12:28:59,564 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 12:28:59,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,567 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 73 flow. Second operand 3 states and 364 transitions. [2022-12-13 12:28:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 123 flow [2022-12-13 12:28:59,568 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 12:28:59,568 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 69 flow [2022-12-13 12:28:59,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, 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 12:28:59,569 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2022-12-13 12:28:59,569 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 69 flow [2022-12-13 12:28:59,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:28:59,570 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:59,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:28:59,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:59,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:59,772 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 12:28:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash 18736, now seen corresponding path program 1 times [2022-12-13 12:28:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:28:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780436782] [2022-12-13 12:28:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:59,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:28:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:28:59,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:28:59,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:28:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:59,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 12:28:59,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:28:59,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:28:59,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:28:59,992 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:28:59,992 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 12:29:00,003 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 12:29:00,028 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 12:29:00,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:00,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:00,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780436782] [2022-12-13 12:29:00,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780436782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:00,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:00,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206964399] [2022-12-13 12:29:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:00,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:29:00,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:00,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:29:00,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:00,224 INFO L130 PetriNetUnfolder]: 163/300 cut-off events. [2022-12-13 12:29:00,224 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:29:00,224 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 1099 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 12:29:00,225 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 12:29:00,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 115 flow [2022-12-13 12:29:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-12-13 12:29:00,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.434052757793765 [2022-12-13 12:29:00,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-12-13 12:29:00,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-12-13 12:29:00,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:00,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-12-13 12:29:00,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,229 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 69 flow. Second operand 3 states and 362 transitions. [2022-12-13 12:29:00,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 115 flow [2022-12-13 12:29:00,229 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 12:29:00,230 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 66 flow [2022-12-13 12:29:00,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, 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 12:29:00,230 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-12-13 12:29:00,230 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 66 flow [2022-12-13 12:29:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:00,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:00,230 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:29:00,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:00,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:00,432 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 12:29:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash 581273, now seen corresponding path program 1 times [2022-12-13 12:29:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:00,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489822971] [2022-12-13 12:29:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:00,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:00,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:00,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 12:29:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:00,515 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:00,515 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 12:29:00,558 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 12:29:00,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:00,746 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 12:29:00,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:00,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489822971] [2022-12-13 12:29:00,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489822971] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:00,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:00,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-12-13 12:29:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790689178] [2022-12-13 12:29:00,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:00,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:29:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:29:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:29:01,413 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:29:01,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 66 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:01,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:29:01,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:01,832 INFO L130 PetriNetUnfolder]: 246/453 cut-off events. [2022-12-13 12:29:01,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:29:01,832 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 41. Compared 1886 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 12:29:01,833 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 65 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2022-12-13 12:29:01,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 72 transitions, 318 flow [2022-12-13 12:29:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:29:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:29:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2022-12-13 12:29:01,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42985611510791366 [2022-12-13 12:29:01,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2022-12-13 12:29:01,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2022-12-13 12:29:01,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:01,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2022-12-13 12:29:01,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,839 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 66 flow. Second operand 6 states and 717 transitions. [2022-12-13 12:29:01,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 72 transitions, 318 flow [2022-12-13 12:29:01,839 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 12:29:01,840 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 119 flow [2022-12-13 12:29:01,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, 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 12:29:01,840 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 12:29:01,841 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 119 flow [2022-12-13 12:29:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:01,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:01,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:01,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:02,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:02,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash 18016636, now seen corresponding path program 1 times [2022-12-13 12:29:02,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:02,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538144996] [2022-12-13 12:29:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:02,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:02,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:29:02,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:02,168 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-12-13 12:29:02,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 29 [2022-12-13 12:29:02,184 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 12:29:02,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:02,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:02,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538144996] [2022-12-13 12:29:02,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538144996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:02,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:02,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618415850] [2022-12-13 12:29:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:02,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:02,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 278 [2022-12-13 12:29:02,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 119 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 12:29:02,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:02,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 278 [2022-12-13 12:29:02,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:02,372 INFO L130 PetriNetUnfolder]: 222/405 cut-off events. [2022-12-13 12:29:02,372 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:29:02,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 405 events. 222/405 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1628 event pairs, 153 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 850. Up to 405 conditions per place. [2022-12-13 12:29:02,378 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 12:29:02,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 171 flow [2022-12-13 12:29:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:02,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2022-12-13 12:29:02,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.420863309352518 [2022-12-13 12:29:02,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2022-12-13 12:29:02,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2022-12-13 12:29:02,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:02,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2022-12-13 12:29:02,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:29:02,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:02,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:02,381 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 119 flow. Second operand 3 states and 351 transitions. [2022-12-13 12:29:02,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 171 flow [2022-12-13 12:29:02,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 161 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:02,382 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 107 flow [2022-12-13 12:29:02,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=107, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2022-12-13 12:29:02,382 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2022-12-13 12:29:02,382 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 107 flow [2022-12-13 12:29:02,383 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 12:29:02,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:02,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:02,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-13 12:29:02,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:02,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 18016637, now seen corresponding path program 1 times [2022-12-13 12:29:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:02,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320612968] [2022-12-13 12:29:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:02,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:02,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:02,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:02,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:02,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:29:02,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:02,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:29:02,750 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-12-13 12:29:02,750 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 12:29:02,758 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 12:29:02,783 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 12:29:02,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:02,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:02,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320612968] [2022-12-13 12:29:02,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320612968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:02,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:02,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66238229] [2022-12-13 12:29:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:02,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:29:02,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 107 flow. Second operand has 3 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 12:29:02,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:02,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:29:02,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:02,940 INFO L130 PetriNetUnfolder]: 198/357 cut-off events. [2022-12-13 12:29:02,940 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 12:29:02,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 357 events. 198/357 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1357 event pairs, 135 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 750. Up to 357 conditions per place. [2022-12-13 12:29:02,941 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-12-13 12:29:02,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 155 flow [2022-12-13 12:29:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2022-12-13 12:29:02,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4292565947242206 [2022-12-13 12:29:02,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2022-12-13 12:29:02,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2022-12-13 12:29:02,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:02,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2022-12-13 12:29:02,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:02,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:02,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:02,945 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 107 flow. Second operand 3 states and 358 transitions. [2022-12-13 12:29:02,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 155 flow [2022-12-13 12:29:02,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:02,946 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 104 flow [2022-12-13 12:29:02,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2022-12-13 12:29:02,946 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-12-13 12:29:02,946 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 104 flow [2022-12-13 12:29:02,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 12:29:02,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:02,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:02,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:03,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:03,147 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash 18016602, now seen corresponding path program 1 times [2022-12-13 12:29:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635440425] [2022-12-13 12:29:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:03,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:03,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:03,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:03,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:03,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 12:29:03,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:03,214 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-13 12:29:03,214 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 12:29:03,229 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 12:29:03,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:03,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:03,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635440425] [2022-12-13 12:29:03,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635440425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:03,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:03,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372570519] [2022-12-13 12:29:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:29:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:29:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:29:03,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 278 [2022-12-13 12:29:03,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:03,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 278 [2022-12-13 12:29:03,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:03,407 INFO L130 PetriNetUnfolder]: 123/228 cut-off events. [2022-12-13 12:29:03,407 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 12:29:03,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 228 events. 123/228 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 733 event pairs, 72 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 489. Up to 221 conditions per place. [2022-12-13 12:29:03,408 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 20 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2022-12-13 12:29:03,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 148 flow [2022-12-13 12:29:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:29:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:29:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2022-12-13 12:29:03,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4136690647482014 [2022-12-13 12:29:03,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2022-12-13 12:29:03,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2022-12-13 12:29:03,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:03,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2022-12-13 12:29:03,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,412 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 104 flow. Second operand 4 states and 460 transitions. [2022-12-13 12:29:03,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 148 flow [2022-12-13 12:29:03,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:03,413 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 107 flow [2022-12-13 12:29:03,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2022-12-13 12:29:03,413 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-12-13 12:29:03,413 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 107 flow [2022-12-13 12:29:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:03,413 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:03,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:03,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:03,615 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 18016603, now seen corresponding path program 1 times [2022-12-13 12:29:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:03,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193624410] [2022-12-13 12:29:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:03,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:03,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:03,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:03,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:03,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:29:03,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:03,748 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 12:29:03,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:03,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:03,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193624410] [2022-12-13 12:29:03,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193624410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:03,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:03,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79020506] [2022-12-13 12:29:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:29:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:29:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:29:03,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 278 [2022-12-13 12:29:03,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 107 flow. Second operand has 4 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 12:29:03,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:03,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 278 [2022-12-13 12:29:03,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:03,959 INFO L130 PetriNetUnfolder]: 92/183 cut-off events. [2022-12-13 12:29:03,959 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:29:03,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 183 events. 92/183 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 565 event pairs, 57 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 403. Up to 155 conditions per place. [2022-12-13 12:29:03,960 INFO L137 encePairwiseOnDemand]: 271/278 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2022-12-13 12:29:03,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 209 flow [2022-12-13 12:29:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:29:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:29:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2022-12-13 12:29:03,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43345323741007197 [2022-12-13 12:29:03,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2022-12-13 12:29:03,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2022-12-13 12:29:03,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:03,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2022-12-13 12:29:03,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,964 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:03,965 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 107 flow. Second operand 4 states and 482 transitions. [2022-12-13 12:29:03,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 209 flow [2022-12-13 12:29:03,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:29:03,966 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 129 flow [2022-12-13 12:29:03,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2022-12-13 12:29:03,967 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2022-12-13 12:29:03,967 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 129 flow [2022-12-13 12:29:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 12:29:03,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:03,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:29:03,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:04,169 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:04,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 558723253, now seen corresponding path program 1 times [2022-12-13 12:29:04,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:04,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64926078] [2022-12-13 12:29:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:04,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:04,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:04,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:29:04,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:04,324 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:04,324 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 12:29:04,420 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 12:29:04,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:04,901 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 12:29:04,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:04,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64926078] [2022-12-13 12:29:04,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64926078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:04,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:04,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-12-13 12:29:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361473460] [2022-12-13 12:29:04,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:29:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:29:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:29:06,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 278 [2022-12-13 12:29:06,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 129 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:06,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:06,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 278 [2022-12-13 12:29:06,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:10,459 INFO L130 PetriNetUnfolder]: 93/189 cut-off events. [2022-12-13 12:29:10,460 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-13 12:29:10,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 189 events. 93/189 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 575 event pairs, 51 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 479. Up to 73 conditions per place. [2022-12-13 12:29:10,461 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 49 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2022-12-13 12:29:10,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 346 flow [2022-12-13 12:29:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:29:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:29:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1094 transitions. [2022-12-13 12:29:10,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3935251798561151 [2022-12-13 12:29:10,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1094 transitions. [2022-12-13 12:29:10,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1094 transitions. [2022-12-13 12:29:10,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:10,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1094 transitions. [2022-12-13 12:29:10,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.4) internal successors, (1094), 10 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,478 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,478 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 129 flow. Second operand 10 states and 1094 transitions. [2022-12-13 12:29:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 346 flow [2022-12-13 12:29:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 336 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:29:10,481 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 161 flow [2022-12-13 12:29:10,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2022-12-13 12:29:10,482 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2022-12-13 12:29:10,482 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 161 flow [2022-12-13 12:29:10,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:10,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:10,483 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 12:29:10,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 12:29:10,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:10,683 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 12:29:10,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:10,684 INFO L85 PathProgramCache]: Analyzing trace with hash 140767039, now seen corresponding path program 2 times [2022-12-13 12:29:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:10,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342370214] [2022-12-13 12:29:10,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:29:10,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:10,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:10,686 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:10,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:10,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:29:10,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:29:10,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:29:10,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:10,813 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:10,813 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 12:29:10,936 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 12:29:10,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:11,490 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 12:29:11,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:11,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342370214] [2022-12-13 12:29:11,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342370214] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:11,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:11,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 12:29:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123961452] [2022-12-13 12:29:11,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:29:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:29:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:29:14,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 278 [2022-12-13 12:29:14,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 161 flow. Second operand has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:14,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:14,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 278 [2022-12-13 12:29:14,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:17,252 INFO L130 PetriNetUnfolder]: 314/600 cut-off events. [2022-12-13 12:29:17,252 INFO L131 PetriNetUnfolder]: For 624/624 co-relation queries the response was YES. [2022-12-13 12:29:17,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 600 events. 314/600 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2495 event pairs, 180 based on Foata normal form. 6/606 useless extension candidates. Maximal degree in co-relation 1730. Up to 229 conditions per place. [2022-12-13 12:29:17,254 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 142 selfloop transitions, 12 changer transitions 0/154 dead transitions. [2022-12-13 12:29:17,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 154 transitions, 919 flow [2022-12-13 12:29:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:29:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:29:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1456 transitions. [2022-12-13 12:29:17,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4364508393285372 [2022-12-13 12:29:17,261 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1456 transitions. [2022-12-13 12:29:17,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1456 transitions. [2022-12-13 12:29:17,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:17,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1456 transitions. [2022-12-13 12:29:17,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 121.33333333333333) internal successors, (1456), 12 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 278.0) internal successors, (3614), 13 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,268 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 278.0) internal successors, (3614), 13 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,268 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 161 flow. Second operand 12 states and 1456 transitions. [2022-12-13 12:29:17,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 154 transitions, 919 flow [2022-12-13 12:29:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 154 transitions, 851 flow, removed 11 selfloop flow, removed 9 redundant places. [2022-12-13 12:29:17,271 INFO L231 Difference]: Finished difference. Result has 57 places, 33 transitions, 209 flow [2022-12-13 12:29:17,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=111, 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=209, PETRI_PLACES=57, PETRI_TRANSITIONS=33} [2022-12-13 12:29:17,272 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2022-12-13 12:29:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 33 transitions, 209 flow [2022-12-13 12:29:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.0) internal successors, (1308), 12 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:17,272 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 12:29:17,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:17,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:17,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2133258203, now seen corresponding path program 2 times [2022-12-13 12:29:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:17,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170844933] [2022-12-13 12:29:17,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:29:17,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:17,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:17,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:17,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:29:17,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:29:17,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 12:29:17,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:17,677 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:17,677 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 12:29:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 12:29:17,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:17,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170844933] [2022-12-13 12:29:17,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170844933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:17,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:17,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:17,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395258206] [2022-12-13 12:29:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:17,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:29:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:17,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:29:17,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:29:17,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 278 [2022-12-13 12:29:17,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 33 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:17,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:17,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 278 [2022-12-13 12:29:17,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:18,056 INFO L130 PetriNetUnfolder]: 200/402 cut-off events. [2022-12-13 12:29:18,057 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-12-13 12:29:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 402 events. 200/402 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1499 event pairs, 90 based on Foata normal form. 72/474 useless extension candidates. Maximal degree in co-relation 1011. Up to 389 conditions per place. [2022-12-13 12:29:18,058 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2022-12-13 12:29:18,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 31 transitions, 255 flow [2022-12-13 12:29:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:29:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:29:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2022-12-13 12:29:18,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40827338129496404 [2022-12-13 12:29:18,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2022-12-13 12:29:18,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2022-12-13 12:29:18,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:18,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2022-12-13 12:29:18,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:18,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:18,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:18,061 INFO L175 Difference]: Start difference. First operand has 57 places, 33 transitions, 209 flow. Second operand 4 states and 454 transitions. [2022-12-13 12:29:18,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 31 transitions, 255 flow [2022-12-13 12:29:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 31 transitions, 230 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 12:29:18,063 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 182 flow [2022-12-13 12:29:18,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2022-12-13 12:29:18,063 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2022-12-13 12:29:18,064 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 182 flow [2022-12-13 12:29:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:18,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:18,064 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2022-12-13 12:29:18,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Ended with exit code 0 [2022-12-13 12:29:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:18,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash 785633535, now seen corresponding path program 3 times [2022-12-13 12:29:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990956909] [2022-12-13 12:29:18,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:29:18,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:18,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:18,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:18,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 12:29:18,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:29:18,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:29:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:18,473 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:18,473 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 12:29:18,829 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 12:29:18,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:21,835 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 12:29:21,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990956909] [2022-12-13 12:29:21,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990956909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:21,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:21,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-12-13 12:29:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882635286] [2022-12-13 12:29:21,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:21,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:29:21,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:21,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:29:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:29:33,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 278 [2022-12-13 12:29:33,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 182 flow. Second operand has 24 states, 24 states have (on average 109.0) internal successors, (2616), 24 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:33,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:33,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 278 [2022-12-13 12:29:33,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:48,909 INFO L130 PetriNetUnfolder]: 452/894 cut-off events. [2022-12-13 12:29:48,909 INFO L131 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2022-12-13 12:29:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 894 events. 452/894 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3533 event pairs, 198 based on Foata normal form. 12/906 useless extension candidates. Maximal degree in co-relation 2260. Up to 253 conditions per place. [2022-12-13 12:29:48,918 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 286 selfloop transitions, 24 changer transitions 0/310 dead transitions. [2022-12-13 12:29:48,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 310 transitions, 1732 flow [2022-12-13 12:29:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 12:29:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 12:29:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2914 transitions. [2022-12-13 12:29:48,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4367505995203837 [2022-12-13 12:29:48,929 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2914 transitions. [2022-12-13 12:29:48,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2914 transitions. [2022-12-13 12:29:48,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:48,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2914 transitions. [2022-12-13 12:29:48,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.41666666666667) internal successors, (2914), 24 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:48,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:48,955 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 278.0) internal successors, (6950), 25 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:48,955 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 182 flow. Second operand 24 states and 2914 transitions. [2022-12-13 12:29:48,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 310 transitions, 1732 flow [2022-12-13 12:29:48,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 310 transitions, 1707 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:29:48,965 INFO L231 Difference]: Finished difference. Result has 86 places, 44 transitions, 361 flow [2022-12-13 12:29:48,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=361, PETRI_PLACES=86, PETRI_TRANSITIONS=44} [2022-12-13 12:29:48,966 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2022-12-13 12:29:48,966 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 44 transitions, 361 flow [2022-12-13 12:29:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.0) internal successors, (2616), 24 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:48,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:48,968 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:48,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 12:29:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:49,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1268166875, now seen corresponding path program 1 times [2022-12-13 12:29:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:49,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882531666] [2022-12-13 12:29:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:49,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:49,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:49,174 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:49,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:49,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:29:49,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:49,316 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 12:29:49,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:49,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882531666] [2022-12-13 12:29:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882531666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:49,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100949114] [2022-12-13 12:29:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:49,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:49,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:49,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:49,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 278 [2022-12-13 12:29:49,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 44 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:49,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 278 [2022-12-13 12:29:49,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:49,593 INFO L130 PetriNetUnfolder]: 788/1502 cut-off events. [2022-12-13 12:29:49,594 INFO L131 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-12-13 12:29:49,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 1502 events. 788/1502 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6984 event pairs, 198 based on Foata normal form. 22/1524 useless extension candidates. Maximal degree in co-relation 3747. Up to 757 conditions per place. [2022-12-13 12:29:49,606 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 47 selfloop transitions, 2 changer transitions 3/52 dead transitions. [2022-12-13 12:29:49,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 52 transitions, 487 flow [2022-12-13 12:29:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2022-12-13 12:29:49,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.447242206235012 [2022-12-13 12:29:49,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2022-12-13 12:29:49,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2022-12-13 12:29:49,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:49,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2022-12-13 12:29:49,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,614 INFO L175 Difference]: Start difference. First operand has 86 places, 44 transitions, 361 flow. Second operand 3 states and 373 transitions. [2022-12-13 12:29:49,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 52 transitions, 487 flow [2022-12-13 12:29:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 439 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-12-13 12:29:49,620 INFO L231 Difference]: Finished difference. Result has 79 places, 44 transitions, 319 flow [2022-12-13 12:29:49,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=79, PETRI_TRANSITIONS=44} [2022-12-13 12:29:49,621 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2022-12-13 12:29:49,621 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 44 transitions, 319 flow [2022-12-13 12:29:49,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:49,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:49,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Ended with exit code 0 [2022-12-13 12:29:49,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:49,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:49,823 INFO L85 PathProgramCache]: Analyzing trace with hash 382266820, now seen corresponding path program 1 times [2022-12-13 12:29:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:49,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320845184] [2022-12-13 12:29:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:49,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:49,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:49,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:49,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:49,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:29:49,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:29:49,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:29:49,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:49,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320845184] [2022-12-13 12:29:49,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320845184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:49,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:49,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:29:49,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512877680] [2022-12-13 12:29:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:49,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:49,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:49,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:49,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 278 [2022-12-13 12:29:49,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 44 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:49,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:49,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 278 [2022-12-13 12:29:49,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:50,340 INFO L130 PetriNetUnfolder]: 1023/2027 cut-off events. [2022-12-13 12:29:50,340 INFO L131 PetriNetUnfolder]: For 1109/1109 co-relation queries the response was YES. [2022-12-13 12:29:50,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 2027 events. 1023/2027 cut-off events. For 1109/1109 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 11089 event pairs, 340 based on Foata normal form. 120/2147 useless extension candidates. Maximal degree in co-relation 5270. Up to 1461 conditions per place. [2022-12-13 12:29:50,352 INFO L137 encePairwiseOnDemand]: 275/278 looper letters, 46 selfloop transitions, 2 changer transitions 5/53 dead transitions. [2022-12-13 12:29:50,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 53 transitions, 448 flow [2022-12-13 12:29:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-13 12:29:50,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4412470023980815 [2022-12-13 12:29:50,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2022-12-13 12:29:50,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2022-12-13 12:29:50,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:50,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2022-12-13 12:29:50,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:50,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:50,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:50,359 INFO L175 Difference]: Start difference. First operand has 79 places, 44 transitions, 319 flow. Second operand 3 states and 368 transitions. [2022-12-13 12:29:50,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 53 transitions, 448 flow [2022-12-13 12:29:50,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 53 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:50,367 INFO L231 Difference]: Finished difference. Result has 79 places, 45 transitions, 331 flow [2022-12-13 12:29:50,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=79, PETRI_TRANSITIONS=45} [2022-12-13 12:29:50,368 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2022-12-13 12:29:50,368 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 45 transitions, 331 flow [2022-12-13 12:29:50,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:50,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:50,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:50,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:50,569 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 170152462, now seen corresponding path program 1 times [2022-12-13 12:29:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:50,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268705258] [2022-12-13 12:29:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:50,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:50,576 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:50,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:50,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:29:50,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:50,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:29:50,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:29:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:29:50,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:50,884 INFO L321 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2022-12-13 12:29:50,885 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 90 treesize of output 27 [2022-12-13 12:29:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:29:50,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268705258] [2022-12-13 12:29:50,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268705258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:50,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:50,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-12-13 12:29:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616676562] [2022-12-13 12:29:50,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:29:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:29:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:29:51,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:29:51,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 45 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:51,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:51,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:29:51,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:51,794 INFO L130 PetriNetUnfolder]: 1703/3267 cut-off events. [2022-12-13 12:29:51,794 INFO L131 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2022-12-13 12:29:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9231 conditions, 3267 events. 1703/3267 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 19569 event pairs, 260 based on Foata normal form. 20/3287 useless extension candidates. Maximal degree in co-relation 9190. Up to 1160 conditions per place. [2022-12-13 12:29:51,804 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 55 selfloop transitions, 6 changer transitions 9/70 dead transitions. [2022-12-13 12:29:51,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 70 transitions, 547 flow [2022-12-13 12:29:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:29:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:29:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2022-12-13 12:29:51,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4158273381294964 [2022-12-13 12:29:51,806 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2022-12-13 12:29:51,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2022-12-13 12:29:51,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:51,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2022-12-13 12:29:51,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:51,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:51,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:51,809 INFO L175 Difference]: Start difference. First operand has 79 places, 45 transitions, 331 flow. Second operand 5 states and 578 transitions. [2022-12-13 12:29:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 70 transitions, 547 flow [2022-12-13 12:29:51,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 70 transitions, 543 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:29:51,814 INFO L231 Difference]: Finished difference. Result has 84 places, 48 transitions, 368 flow [2022-12-13 12:29:51,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=368, PETRI_PLACES=84, PETRI_TRANSITIONS=48} [2022-12-13 12:29:51,814 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2022-12-13 12:29:51,814 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 48 transitions, 368 flow [2022-12-13 12:29:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.14285714285714) internal successors, (778), 7 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:51,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:51,815 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:51,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:52,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:52,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:52,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1398309302, now seen corresponding path program 2 times [2022-12-13 12:29:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:52,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412045369] [2022-12-13 12:29:52,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:29:52,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:52,021 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:52,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:52,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:29:52,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:29:52,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:29:52,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:52,257 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 12:29:52,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-12-13 12:29:52,433 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:29:52,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:29:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:29:52,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:52,695 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 12:29:52,696 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 95 treesize of output 73 [2022-12-13 12:29:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 12:29:52,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412045369] [2022-12-13 12:29:52,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412045369] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:52,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:52,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 12:29:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179775908] [2022-12-13 12:29:52,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:29:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:29:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:29:53,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 278 [2022-12-13 12:29:53,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 48 transitions, 368 flow. Second operand has 10 states, 10 states have (on average 104.4) internal successors, (1044), 10 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:53,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:53,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 278 [2022-12-13 12:29:53,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:55,659 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 12:29:56,376 INFO L130 PetriNetUnfolder]: 2023/3847 cut-off events. [2022-12-13 12:29:56,376 INFO L131 PetriNetUnfolder]: For 4289/4289 co-relation queries the response was YES. [2022-12-13 12:29:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11774 conditions, 3847 events. 2023/3847 cut-off events. For 4289/4289 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 23563 event pairs, 360 based on Foata normal form. 20/3867 useless extension candidates. Maximal degree in co-relation 11730. Up to 1280 conditions per place. [2022-12-13 12:29:56,390 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 55 selfloop transitions, 6 changer transitions 9/70 dead transitions. [2022-12-13 12:29:56,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 70 transitions, 573 flow [2022-12-13 12:29:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:29:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:29:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-12-13 12:29:56,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3971223021582734 [2022-12-13 12:29:56,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-12-13 12:29:56,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-12-13 12:29:56,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:56,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-12-13 12:29:56,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:56,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:56,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:56,403 INFO L175 Difference]: Start difference. First operand has 84 places, 48 transitions, 368 flow. Second operand 5 states and 552 transitions. [2022-12-13 12:29:56,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 70 transitions, 573 flow [2022-12-13 12:29:56,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 70 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:29:56,415 INFO L231 Difference]: Finished difference. Result has 87 places, 49 transitions, 391 flow [2022-12-13 12:29:56,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=87, PETRI_TRANSITIONS=49} [2022-12-13 12:29:56,415 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 53 predicate places. [2022-12-13 12:29:56,415 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 49 transitions, 391 flow [2022-12-13 12:29:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.4) internal successors, (1044), 10 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:56,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:56,416 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:29:56,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:29:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:56,617 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:29:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1641642355, now seen corresponding path program 3 times [2022-12-13 12:29:56,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:29:56,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401440905] [2022-12-13 12:29:56,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:29:56,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:29:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:29:56,623 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:29:56,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:29:56,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:29:56,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:29:56,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:29:56,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:29:56,849 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:29:56,849 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 12:29:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:57,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:29:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:57,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:29:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401440905] [2022-12-13 12:29:57,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401440905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:29:57,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:29:57,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 12:29:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728414850] [2022-12-13 12:29:57,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:29:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:29:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:29:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:29:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:29:59,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 278 [2022-12-13 12:29:59,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 49 transitions, 391 flow. Second operand has 12 states, 12 states have (on average 101.41666666666667) internal successors, (1217), 12 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:29:59,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:59,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 278 [2022-12-13 12:29:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:01,440 INFO L130 PetriNetUnfolder]: 1995/3805 cut-off events. [2022-12-13 12:30:01,440 INFO L131 PetriNetUnfolder]: For 7382/7382 co-relation queries the response was YES. [2022-12-13 12:30:01,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 3805 events. 1995/3805 cut-off events. For 7382/7382 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 23008 event pairs, 588 based on Foata normal form. 12/3817 useless extension candidates. Maximal degree in co-relation 12291. Up to 1923 conditions per place. [2022-12-13 12:30:01,452 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 42 selfloop transitions, 11 changer transitions 31/84 dead transitions. [2022-12-13 12:30:01,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 84 transitions, 688 flow [2022-12-13 12:30:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:30:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:30:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 946 transitions. [2022-12-13 12:30:01,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3780975219824141 [2022-12-13 12:30:01,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 946 transitions. [2022-12-13 12:30:01,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 946 transitions. [2022-12-13 12:30:01,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:01,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 946 transitions. [2022-12-13 12:30:01,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.11111111111111) internal successors, (946), 9 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:01,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:01,458 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:01,458 INFO L175 Difference]: Start difference. First operand has 87 places, 49 transitions, 391 flow. Second operand 9 states and 946 transitions. [2022-12-13 12:30:01,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 84 transitions, 688 flow [2022-12-13 12:30:01,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 673 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 12:30:01,478 INFO L231 Difference]: Finished difference. Result has 94 places, 48 transitions, 401 flow [2022-12-13 12:30:01,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=94, PETRI_TRANSITIONS=48} [2022-12-13 12:30:01,478 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2022-12-13 12:30:01,478 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 48 transitions, 401 flow [2022-12-13 12:30:01,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.41666666666667) internal successors, (1217), 12 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:01,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:01,478 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:01,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:30:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:01,679 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 12:30:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -691657241, now seen corresponding path program 4 times [2022-12-13 12:30:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685706992] [2022-12-13 12:30:01,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:30:01,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:01,687 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:01,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:30:01,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:30:01,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:01,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:30:01,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:01,842 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:30:01,842 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 12:30:01,915 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 13 treesize of output 9 [2022-12-13 12:30:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:02,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:02,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:02,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685706992] [2022-12-13 12:30:02,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685706992] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:02,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:02,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-13 12:30:02,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640939083] [2022-12-13 12:30:02,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:02,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:30:02,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:02,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:30:02,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:30:05,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 278 [2022-12-13 12:30:05,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 48 transitions, 401 flow. Second operand has 14 states, 14 states have (on average 104.21428571428571) internal successors, (1459), 14 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:05,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:05,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 278 [2022-12-13 12:30:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:07,270 INFO L130 PetriNetUnfolder]: 4330/8394 cut-off events. [2022-12-13 12:30:07,271 INFO L131 PetriNetUnfolder]: For 19547/19547 co-relation queries the response was YES. [2022-12-13 12:30:07,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26407 conditions, 8394 events. 4330/8394 cut-off events. For 19547/19547 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 61176 event pairs, 1277 based on Foata normal form. 372/8766 useless extension candidates. Maximal degree in co-relation 26361. Up to 3440 conditions per place. [2022-12-13 12:30:07,298 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 94 selfloop transitions, 22 changer transitions 10/126 dead transitions. [2022-12-13 12:30:07,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 1050 flow [2022-12-13 12:30:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:30:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:30:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1315 transitions. [2022-12-13 12:30:07,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39418465227817745 [2022-12-13 12:30:07,301 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1315 transitions. [2022-12-13 12:30:07,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1315 transitions. [2022-12-13 12:30:07,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:07,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1315 transitions. [2022-12-13 12:30:07,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 109.58333333333333) internal successors, (1315), 12 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:07,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 278.0) internal successors, (3614), 13 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:07,305 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 278.0) internal successors, (3614), 13 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:07,305 INFO L175 Difference]: Start difference. First operand has 94 places, 48 transitions, 401 flow. Second operand 12 states and 1315 transitions. [2022-12-13 12:30:07,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 1050 flow [2022-12-13 12:30:07,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 997 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-12-13 12:30:07,358 INFO L231 Difference]: Finished difference. Result has 100 places, 64 transitions, 624 flow [2022-12-13 12:30:07,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=624, PETRI_PLACES=100, PETRI_TRANSITIONS=64} [2022-12-13 12:30:07,358 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 66 predicate places. [2022-12-13 12:30:07,358 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 64 transitions, 624 flow [2022-12-13 12:30:07,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.21428571428571) internal successors, (1459), 14 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:07,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:07,359 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:07,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:30:07,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:07,559 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 12:30:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash -375585617, now seen corresponding path program 5 times [2022-12-13 12:30:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:07,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329847360] [2022-12-13 12:30:07,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:30:07,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:07,561 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:07,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:30:07,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:30:07,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:07,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:30:07,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:07,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:30:07,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:30:07,833 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 12:30:07,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:07,983 INFO L321 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2022-12-13 12:30:07,983 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 91 treesize of output 29 [2022-12-13 12:30:08,074 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 12:30:08,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:08,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329847360] [2022-12-13 12:30:08,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329847360] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:08,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:08,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 12:30:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967808780] [2022-12-13 12:30:08,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:30:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:30:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:30:08,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:30:08,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 64 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 110.2) internal successors, (1102), 10 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:08,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:08,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:30:08,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:10,494 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 12:30:12,863 INFO L130 PetriNetUnfolder]: 6732/12821 cut-off events. [2022-12-13 12:30:12,863 INFO L131 PetriNetUnfolder]: For 40369/40369 co-relation queries the response was YES. [2022-12-13 12:30:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47795 conditions, 12821 events. 6732/12821 cut-off events. For 40369/40369 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 98598 event pairs, 642 based on Foata normal form. 22/12843 useless extension candidates. Maximal degree in co-relation 47746. Up to 3833 conditions per place. [2022-12-13 12:30:12,912 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 101 selfloop transitions, 35 changer transitions 14/150 dead transitions. [2022-12-13 12:30:12,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 1449 flow [2022-12-13 12:30:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:30:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:30:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1158 transitions. [2022-12-13 12:30:12,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41654676258992807 [2022-12-13 12:30:12,936 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1158 transitions. [2022-12-13 12:30:12,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1158 transitions. [2022-12-13 12:30:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1158 transitions. [2022-12-13 12:30:12,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.8) internal successors, (1158), 10 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:12,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:12,940 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:12,940 INFO L175 Difference]: Start difference. First operand has 100 places, 64 transitions, 624 flow. Second operand 10 states and 1158 transitions. [2022-12-13 12:30:12,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 1449 flow [2022-12-13 12:30:13,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 150 transitions, 1352 flow, removed 45 selfloop flow, removed 3 redundant places. [2022-12-13 12:30:13,120 INFO L231 Difference]: Finished difference. Result has 111 places, 83 transitions, 943 flow [2022-12-13 12:30:13,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=943, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2022-12-13 12:30:13,120 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 77 predicate places. [2022-12-13 12:30:13,121 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 943 flow [2022-12-13 12:30:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.2) internal successors, (1102), 10 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:13,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:13,121 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:13,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:30:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:13,322 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 12:30:13,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1011708947, now seen corresponding path program 6 times [2022-12-13 12:30:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:13,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746856361] [2022-12-13 12:30:13,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:30:13,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:13,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:13,328 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:13,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:30:13,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 12:30:13,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:13,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 12:30:13,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:13,538 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:30:13,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:30:13,592 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 12:30:13,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:13,702 INFO L321 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2022-12-13 12:30:13,702 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 90 treesize of output 27 [2022-12-13 12:30:13,802 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 12:30:13,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:13,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746856361] [2022-12-13 12:30:13,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746856361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:13,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:13,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 12:30:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762828668] [2022-12-13 12:30:13,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:30:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:30:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:30:14,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:30:14,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 943 flow. Second operand has 9 states, 9 states have (on average 110.77777777777777) internal successors, (997), 9 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:14,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:14,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:30:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:16,872 INFO L130 PetriNetUnfolder]: 6732/12743 cut-off events. [2022-12-13 12:30:16,872 INFO L131 PetriNetUnfolder]: For 49146/49146 co-relation queries the response was YES. [2022-12-13 12:30:16,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50165 conditions, 12743 events. 6732/12743 cut-off events. For 49146/49146 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 97780 event pairs, 702 based on Foata normal form. 78/12821 useless extension candidates. Maximal degree in co-relation 50110. Up to 3043 conditions per place. [2022-12-13 12:30:16,918 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 80 selfloop transitions, 30 changer transitions 38/148 dead transitions. [2022-12-13 12:30:16,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 148 transitions, 1481 flow [2022-12-13 12:30:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:30:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:30:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1158 transitions. [2022-12-13 12:30:16,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41654676258992807 [2022-12-13 12:30:16,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1158 transitions. [2022-12-13 12:30:16,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1158 transitions. [2022-12-13 12:30:16,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:16,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1158 transitions. [2022-12-13 12:30:16,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.8) internal successors, (1158), 10 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,924 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 278.0) internal successors, (3058), 11 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:16,924 INFO L175 Difference]: Start difference. First operand has 111 places, 83 transitions, 943 flow. Second operand 10 states and 1158 transitions. [2022-12-13 12:30:16,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 148 transitions, 1481 flow [2022-12-13 12:30:17,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 148 transitions, 1391 flow, removed 35 selfloop flow, removed 4 redundant places. [2022-12-13 12:30:17,442 INFO L231 Difference]: Finished difference. Result has 120 places, 81 transitions, 928 flow [2022-12-13 12:30:17,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=928, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2022-12-13 12:30:17,442 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2022-12-13 12:30:17,442 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 928 flow [2022-12-13 12:30:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.77777777777777) internal successors, (997), 9 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:17,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:17,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:17,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 12:30:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:17,643 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 12:30:17,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash 912197675, now seen corresponding path program 7 times [2022-12-13 12:30:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131069314] [2022-12-13 12:30:17,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:30:17,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:17,648 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:17,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 12:30:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:30:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:17,802 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 12:30:17,833 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 12:30:17,954 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 12:30:18,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:30:18,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:30:18,130 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 12:30:18,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:18,260 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_537 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_537) 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 12:30:20,749 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 12:30:20,749 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 280 treesize of output 256 [2022-12-13 12:30:20,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 94 [2022-12-13 12:30:20,887 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-12-13 12:30:20,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 119 treesize of output 111 [2022-12-13 12:30:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 2 not checked. [2022-12-13 12:30:22,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:22,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131069314] [2022-12-13 12:30:22,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131069314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:22,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:22,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 12:30:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655681575] [2022-12-13 12:30:22,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:22,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:30:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:22,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:30:22,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=4, NotChecked=22, Total=182 [2022-12-13 12:30:22,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 278 [2022-12-13 12:30:22,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 928 flow. Second operand has 14 states, 14 states have (on average 84.07142857142857) internal successors, (1177), 14 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:22,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:22,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 278 [2022-12-13 12:30:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:24,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:30:30,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 12:30:33,598 WARN L539 Checker$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 12:30:38,084 INFO L130 PetriNetUnfolder]: 7672/14437 cut-off events. [2022-12-13 12:30:38,084 INFO L131 PetriNetUnfolder]: For 64874/64874 co-relation queries the response was YES. [2022-12-13 12:30:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58044 conditions, 14437 events. 7672/14437 cut-off events. For 64874/64874 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 112181 event pairs, 822 based on Foata normal form. 22/14459 useless extension candidates. Maximal degree in co-relation 57987. Up to 3041 conditions per place. [2022-12-13 12:30:38,139 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 87 selfloop transitions, 41 changer transitions 30/158 dead transitions. [2022-12-13 12:30:38,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 158 transitions, 1620 flow [2022-12-13 12:30:38,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:30:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:30:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 993 transitions. [2022-12-13 12:30:38,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3247220405493787 [2022-12-13 12:30:38,143 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 993 transitions. [2022-12-13 12:30:38,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 993 transitions. [2022-12-13 12:30:38,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:38,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 993 transitions. [2022-12-13 12:30:38,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.27272727272727) internal successors, (993), 11 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:38,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:38,146 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:38,146 INFO L175 Difference]: Start difference. First operand has 120 places, 81 transitions, 928 flow. Second operand 11 states and 993 transitions. [2022-12-13 12:30:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 158 transitions, 1620 flow [2022-12-13 12:30:38,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 158 transitions, 1591 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:30:38,462 INFO L231 Difference]: Finished difference. Result has 130 places, 88 transitions, 1142 flow [2022-12-13 12:30:38,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1142, PETRI_PLACES=130, PETRI_TRANSITIONS=88} [2022-12-13 12:30:38,463 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 96 predicate places. [2022-12-13 12:30:38,463 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 88 transitions, 1142 flow [2022-12-13 12:30:38,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.07142857142857) internal successors, (1177), 14 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:38,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:38,463 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:38,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:30:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:38,664 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 12:30:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -173505826, now seen corresponding path program 8 times [2022-12-13 12:30:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:38,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262521696] [2022-12-13 12:30:38,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:30:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:38,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:38,670 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:38,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 12:30:38,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:30:38,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:38,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 12:30:38,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:38,863 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-13 12:30:38,863 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 12:30:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:39,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:40,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:40,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262521696] [2022-12-13 12:30:40,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262521696] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:40,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:40,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-12-13 12:30:40,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816174160] [2022-12-13 12:30:40,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:40,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 12:30:40,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:40,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 12:30:40,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:30:44,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 278 [2022-12-13 12:30:44,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 88 transitions, 1142 flow. Second operand has 18 states, 18 states have (on average 100.94444444444444) internal successors, (1817), 18 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:44,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:44,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 278 [2022-12-13 12:30:44,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:48,196 INFO L130 PetriNetUnfolder]: 7762/14456 cut-off events. [2022-12-13 12:30:48,196 INFO L131 PetriNetUnfolder]: For 85637/85637 co-relation queries the response was YES. [2022-12-13 12:30:48,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62718 conditions, 14456 events. 7762/14456 cut-off events. For 85637/85637 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 111794 event pairs, 4994 based on Foata normal form. 36/14492 useless extension candidates. Maximal degree in co-relation 62657. Up to 13380 conditions per place. [2022-12-13 12:30:48,252 INFO L137 encePairwiseOnDemand]: 272/278 looper letters, 65 selfloop transitions, 5 changer transitions 67/137 dead transitions. [2022-12-13 12:30:48,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 137 transitions, 1743 flow [2022-12-13 12:30:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:30:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:30:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1153 transitions. [2022-12-13 12:30:48,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37704381948986265 [2022-12-13 12:30:48,254 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1153 transitions. [2022-12-13 12:30:48,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1153 transitions. [2022-12-13 12:30:48,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:48,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1153 transitions. [2022-12-13 12:30:48,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 104.81818181818181) internal successors, (1153), 11 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:48,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:48,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:48,258 INFO L175 Difference]: Start difference. First operand has 130 places, 88 transitions, 1142 flow. Second operand 11 states and 1153 transitions. [2022-12-13 12:30:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 137 transitions, 1743 flow [2022-12-13 12:30:48,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 137 transitions, 1666 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-12-13 12:30:48,637 INFO L231 Difference]: Finished difference. Result has 135 places, 70 transitions, 835 flow [2022-12-13 12:30:48,638 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=835, PETRI_PLACES=135, PETRI_TRANSITIONS=70} [2022-12-13 12:30:48,638 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2022-12-13 12:30:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 70 transitions, 835 flow [2022-12-13 12:30:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 100.94444444444444) internal successors, (1817), 18 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:48,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:48,638 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:48,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:30:48,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:48,840 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 12:30:48,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash -627778830, now seen corresponding path program 9 times [2022-12-13 12:30:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:30:48,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547561635] [2022-12-13 12:30:48,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:30:48,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:30:48,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:30:48,845 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:30:48,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 12:30:49,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:30:49,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:30:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:30:49,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:30:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:49,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:30:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:30:50,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:30:50,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547561635] [2022-12-13 12:30:50,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547561635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:30:50,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:30:50,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-12-13 12:30:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484604694] [2022-12-13 12:30:50,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:30:50,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 12:30:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:30:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 12:30:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-12-13 12:30:52,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 278 [2022-12-13 12:30:52,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 70 transitions, 835 flow. Second operand has 20 states, 20 states have (on average 107.85) internal successors, (2157), 20 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:30:52,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:52,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 278 [2022-12-13 12:30:52,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:01,079 INFO L130 PetriNetUnfolder]: 16735/30931 cut-off events. [2022-12-13 12:31:01,079 INFO L131 PetriNetUnfolder]: For 178671/178671 co-relation queries the response was YES. [2022-12-13 12:31:01,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129613 conditions, 30931 events. 16735/30931 cut-off events. For 178671/178671 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 269100 event pairs, 3041 based on Foata normal form. 388/31319 useless extension candidates. Maximal degree in co-relation 129550. Up to 9653 conditions per place. [2022-12-13 12:31:01,287 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 148 selfloop transitions, 105 changer transitions 19/272 dead transitions. [2022-12-13 12:31:01,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 272 transitions, 3687 flow [2022-12-13 12:31:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:31:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:31:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2160 transitions. [2022-12-13 12:31:01,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40893600908746686 [2022-12-13 12:31:01,293 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2160 transitions. [2022-12-13 12:31:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2160 transitions. [2022-12-13 12:31:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:01,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2160 transitions. [2022-12-13 12:31:01,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 113.6842105263158) internal successors, (2160), 19 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:01,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:01,301 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:01,301 INFO L175 Difference]: Start difference. First operand has 135 places, 70 transitions, 835 flow. Second operand 19 states and 2160 transitions. [2022-12-13 12:31:01,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 272 transitions, 3687 flow [2022-12-13 12:31:03,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 272 transitions, 3171 flow, removed 202 selfloop flow, removed 13 redundant places. [2022-12-13 12:31:03,118 INFO L231 Difference]: Finished difference. Result has 132 places, 172 transitions, 2379 flow [2022-12-13 12:31:03,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2379, PETRI_PLACES=132, PETRI_TRANSITIONS=172} [2022-12-13 12:31:03,118 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 98 predicate places. [2022-12-13 12:31:03,118 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 172 transitions, 2379 flow [2022-12-13 12:31:03,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 107.85) internal successors, (2157), 20 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:03,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:03,119 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:03,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:31:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:03,320 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 12:31:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1934657274, now seen corresponding path program 10 times [2022-12-13 12:31:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:31:03,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679442419] [2022-12-13 12:31:03,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:31:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:31:03,325 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:31:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:31:03,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:31:03,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:31:03,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:31:03,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:31:03,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:31:03,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:31:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:31:03,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:31:03,919 INFO L321 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2022-12-13 12:31:03,920 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 91 treesize of output 29 [2022-12-13 12:31:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:31:04,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:31:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679442419] [2022-12-13 12:31:04,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679442419] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:31:04,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:31:04,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 12:31:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648468652] [2022-12-13 12:31:04,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:31:04,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:31:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:31:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:31:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:31:04,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:31:04,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 172 transitions, 2379 flow. Second operand has 13 states, 13 states have (on average 109.61538461538461) internal successors, (1425), 13 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:04,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:04,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:31:04,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:06,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:31:08,976 WARN L539 Checker$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 12:31:11,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:31:13,588 WARN L539 Checker$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 12:31:20,094 INFO L130 PetriNetUnfolder]: 21363/39457 cut-off events. [2022-12-13 12:31:20,094 INFO L131 PetriNetUnfolder]: For 172816/172816 co-relation queries the response was YES. [2022-12-13 12:31:20,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159526 conditions, 39457 events. 21363/39457 cut-off events. For 172816/172816 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 351022 event pairs, 1975 based on Foata normal form. 133/39590 useless extension candidates. Maximal degree in co-relation 159471. Up to 11559 conditions per place. [2022-12-13 12:31:20,300 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 150 selfloop transitions, 172 changer transitions 17/339 dead transitions. [2022-12-13 12:31:20,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 339 transitions, 4636 flow [2022-12-13 12:31:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:31:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:31:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1506 transitions. [2022-12-13 12:31:20,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41671278361925845 [2022-12-13 12:31:20,303 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1506 transitions. [2022-12-13 12:31:20,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1506 transitions. [2022-12-13 12:31:20,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:20,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1506 transitions. [2022-12-13 12:31:20,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:20,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:20,307 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:20,307 INFO L175 Difference]: Start difference. First operand has 132 places, 172 transitions, 2379 flow. Second operand 13 states and 1506 transitions. [2022-12-13 12:31:20,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 339 transitions, 4636 flow [2022-12-13 12:31:21,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 339 transitions, 4021 flow, removed 303 selfloop flow, removed 5 redundant places. [2022-12-13 12:31:21,961 INFO L231 Difference]: Finished difference. Result has 147 places, 238 transitions, 3575 flow [2022-12-13 12:31:21,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3575, PETRI_PLACES=147, PETRI_TRANSITIONS=238} [2022-12-13 12:31:21,961 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 113 predicate places. [2022-12-13 12:31:21,962 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 238 transitions, 3575 flow [2022-12-13 12:31:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 109.61538461538461) internal successors, (1425), 13 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:21,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:21,962 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:21,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Ended with exit code 0 [2022-12-13 12:31:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:22,163 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 12:31:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash -449069708, now seen corresponding path program 11 times [2022-12-13 12:31:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:31:22,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460114284] [2022-12-13 12:31:22,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:31:22,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:31:22,168 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:31:22,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:31:22,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 12:31:22,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:31:22,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:31:22,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:31:22,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:31:22,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:31:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:31:22,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:31:22,646 INFO L321 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2022-12-13 12:31:22,647 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 91 treesize of output 29 [2022-12-13 12:31:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:31:22,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:31:22,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460114284] [2022-12-13 12:31:22,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460114284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:31:22,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:31:22,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 12:31:22,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918467927] [2022-12-13 12:31:22,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:31:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:31:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:31:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:31:22,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:31:23,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:31:23,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 238 transitions, 3575 flow. Second operand has 12 states, 12 states have (on average 110.08333333333333) internal successors, (1321), 12 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:23,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:23,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:31:23,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:25,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:31:35,074 INFO L130 PetriNetUnfolder]: 25257/46538 cut-off events. [2022-12-13 12:31:35,075 INFO L131 PetriNetUnfolder]: For 233209/233209 co-relation queries the response was YES. [2022-12-13 12:31:35,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183685 conditions, 46538 events. 25257/46538 cut-off events. For 233209/233209 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 422215 event pairs, 1984 based on Foata normal form. 167/46705 useless extension candidates. Maximal degree in co-relation 183622. Up to 9624 conditions per place. [2022-12-13 12:31:35,448 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 195 selfloop transitions, 191 changer transitions 31/417 dead transitions. [2022-12-13 12:31:35,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 417 transitions, 5564 flow [2022-12-13 12:31:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:31:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:31:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2322 transitions. [2022-12-13 12:31:35,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41762589928057553 [2022-12-13 12:31:35,453 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2322 transitions. [2022-12-13 12:31:35,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2322 transitions. [2022-12-13 12:31:35,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:35,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2322 transitions. [2022-12-13 12:31:35,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 116.1) internal successors, (2322), 20 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:35,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 278.0) internal successors, (5838), 21 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:35,462 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 278.0) internal successors, (5838), 21 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:35,462 INFO L175 Difference]: Start difference. First operand has 147 places, 238 transitions, 3575 flow. Second operand 20 states and 2322 transitions. [2022-12-13 12:31:35,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 417 transitions, 5564 flow [2022-12-13 12:31:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 417 transitions, 5510 flow, removed 19 selfloop flow, removed 3 redundant places. [2022-12-13 12:31:39,263 INFO L231 Difference]: Finished difference. Result has 172 places, 274 transitions, 4555 flow [2022-12-13 12:31:39,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4555, PETRI_PLACES=172, PETRI_TRANSITIONS=274} [2022-12-13 12:31:39,263 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2022-12-13 12:31:39,264 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 274 transitions, 4555 flow [2022-12-13 12:31:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.08333333333333) internal successors, (1321), 12 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:31:39,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:39,264 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:39,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:31:39,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:39,465 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 12:31:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1979870290, now seen corresponding path program 12 times [2022-12-13 12:31:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:31:39,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558693998] [2022-12-13 12:31:39,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:31:39,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:31:39,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:31:39,470 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:31:39,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:31:39,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 12:31:39,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:31:39,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 12:31:39,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:31:40,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:31:40,177 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 134 treesize of output 28 [2022-12-13 12:31:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:31:40,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:31:59,127 INFO L321 Elim1Store]: treesize reduction 424, result has 3.9 percent of original size [2022-12-13 12:31:59,128 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 137 treesize of output 46 [2022-12-13 12:31:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:31:59,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:31:59,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558693998] [2022-12-13 12:31:59,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558693998] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:31:59,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:31:59,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-12-13 12:31:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148328704] [2022-12-13 12:31:59,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:31:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:31:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:31:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:31:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=191, Unknown=9, NotChecked=0, Total=240 [2022-12-13 12:32:01,394 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 12:32:03,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:05,407 WARN L539 Checker$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 12:32:07,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:09,462 WARN L539 Checker$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 12:32:11,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:13,512 WARN L539 Checker$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 12:32:13,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 278 [2022-12-13 12:32:13,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 274 transitions, 4555 flow. Second operand has 16 states, 16 states have (on average 104.375) internal successors, (1670), 16 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:13,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:13,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 278 [2022-12-13 12:32:13,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:15,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:17,917 WARN L539 Checker$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 12:32:40,190 WARN L233 SmtUtils]: Spent 20.18s on a formula simplification. DAG size of input: 89 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:32:42,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:44,487 WARN L539 Checker$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 12:32:46,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:32:48,660 WARN L539 Checker$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 12:33:09,006 WARN L233 SmtUtils]: Spent 20.20s on a formula simplification. DAG size of input: 87 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:33:11,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:13,336 WARN L539 Checker$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 12:33:15,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:17,975 WARN L539 Checker$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 12:33:20,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:37,231 WARN L233 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 73 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:33:39,633 WARN L539 Checker$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 12:33:44,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:46,077 WARN L539 Checker$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 12:33:48,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:50,390 WARN L539 Checker$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 12:33:52,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:33:55,015 WARN L539 Checker$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 12:33:57,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:09,231 WARN L233 SmtUtils]: Spent 10.10s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:34:16,147 WARN L539 Checker$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 12:34:18,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:20,393 WARN L539 Checker$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 12:34:30,644 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 12:34:32,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:34,805 WARN L539 Checker$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 12:34:37,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:39,644 WARN L539 Checker$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 12:34:41,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:49,172 WARN L539 Checker$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 12:34:56,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:34:58,683 WARN L539 Checker$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 12:35:02,794 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 12:35:14,411 INFO L130 PetriNetUnfolder]: 43267/79519 cut-off events. [2022-12-13 12:35:14,412 INFO L131 PetriNetUnfolder]: For 545733/545733 co-relation queries the response was YES. [2022-12-13 12:35:14,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336430 conditions, 79519 events. 43267/79519 cut-off events. For 545733/545733 co-relation queries the response was YES. Maximal size of possible extension queue 1865. Compared 774337 event pairs, 10002 based on Foata normal form. 185/79704 useless extension candidates. Maximal degree in co-relation 336358. Up to 35497 conditions per place. [2022-12-13 12:35:15,049 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 324 selfloop transitions, 202 changer transitions 75/601 dead transitions. [2022-12-13 12:35:15,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 601 transitions, 8711 flow [2022-12-13 12:35:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 12:35:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 12:35:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3095 transitions. [2022-12-13 12:35:15,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3976104830421377 [2022-12-13 12:35:15,055 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3095 transitions. [2022-12-13 12:35:15,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3095 transitions. [2022-12-13 12:35:15,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:15,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3095 transitions. [2022-12-13 12:35:15,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 110.53571428571429) internal successors, (3095), 28 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:15,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 278.0) internal successors, (8062), 29 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:15,063 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 278.0) internal successors, (8062), 29 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:15,063 INFO L175 Difference]: Start difference. First operand has 172 places, 274 transitions, 4555 flow. Second operand 28 states and 3095 transitions. [2022-12-13 12:35:15,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 601 transitions, 8711 flow [2022-12-13 12:35:26,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 601 transitions, 8504 flow, removed 74 selfloop flow, removed 2 redundant places. [2022-12-13 12:35:26,605 INFO L231 Difference]: Finished difference. Result has 219 places, 407 transitions, 7516 flow [2022-12-13 12:35:26,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=4466, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7516, PETRI_PLACES=219, PETRI_TRANSITIONS=407} [2022-12-13 12:35:26,606 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 185 predicate places. [2022-12-13 12:35:26,606 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 407 transitions, 7516 flow [2022-12-13 12:35:26,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 104.375) internal successors, (1670), 16 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:26,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:26,606 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:26,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:35:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:35:26,807 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 12:35:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1520291914, now seen corresponding path program 13 times [2022-12-13 12:35:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:35:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235282316] [2022-12-13 12:35:26,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:35:26,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:35:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:35:26,813 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:35:26,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 12:35:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:35:27,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:35:27,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:35:27,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:35:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:35:27,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:35:27,380 INFO L321 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2022-12-13 12:35:27,380 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 90 treesize of output 27 [2022-12-13 12:35:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:35:27,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:35:27,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235282316] [2022-12-13 12:35:27,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235282316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:35:27,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:35:27,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 12:35:27,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460038344] [2022-12-13 12:35:27,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:35:27,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:35:27,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:35:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:35:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:35:27,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:35:27,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 407 transitions, 7516 flow. Second operand has 11 states, 11 states have (on average 110.18181818181819) internal successors, (1212), 11 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:27,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:27,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:35:27,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:46,704 INFO L130 PetriNetUnfolder]: 43267/79370 cut-off events. [2022-12-13 12:35:46,704 INFO L131 PetriNetUnfolder]: For 785901/785901 co-relation queries the response was YES. [2022-12-13 12:35:47,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387417 conditions, 79370 events. 43267/79370 cut-off events. For 785901/785901 co-relation queries the response was YES. Maximal size of possible extension queue 1860. Compared 771956 event pairs, 4634 based on Foata normal form. 149/79519 useless extension candidates. Maximal degree in co-relation 387323. Up to 26201 conditions per place. [2022-12-13 12:35:47,550 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 195 selfloop transitions, 198 changer transitions 121/514 dead transitions. [2022-12-13 12:35:47,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 514 transitions, 9103 flow [2022-12-13 12:35:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:35:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:35:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1739 transitions. [2022-12-13 12:35:47,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170263788968825 [2022-12-13 12:35:47,553 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1739 transitions. [2022-12-13 12:35:47,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1739 transitions. [2022-12-13 12:35:47,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:47,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1739 transitions. [2022-12-13 12:35:47,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.93333333333334) internal successors, (1739), 15 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:47,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 278.0) internal successors, (4448), 16 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:47,558 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 278.0) internal successors, (4448), 16 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:47,558 INFO L175 Difference]: Start difference. First operand has 219 places, 407 transitions, 7516 flow. Second operand 15 states and 1739 transitions. [2022-12-13 12:35:47,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 514 transitions, 9103 flow [2022-12-13 12:36:12,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 514 transitions, 8910 flow, removed 94 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:12,077 INFO L231 Difference]: Finished difference. Result has 239 places, 352 transitions, 6842 flow [2022-12-13 12:36:12,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=7323, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6842, PETRI_PLACES=239, PETRI_TRANSITIONS=352} [2022-12-13 12:36:12,078 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 205 predicate places. [2022-12-13 12:36:12,078 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 352 transitions, 6842 flow [2022-12-13 12:36:12,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.18181818181819) internal successors, (1212), 11 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:12,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:12,078 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:12,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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)] Forceful destruction successful, exit code 0 [2022-12-13 12:36:12,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:36:12,279 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:36:12,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1429579690, now seen corresponding path program 14 times [2022-12-13 12:36:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:36:12,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606196774] [2022-12-13 12:36:12,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:36:12,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:36:12,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:36:12,285 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:36:12,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (30)] Waiting until timeout for monitored process [2022-12-13 12:36:12,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:36:12,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:36:12,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 12:36:12,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:12,506 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 12:36:12,671 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 12:36:12,878 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:36:12,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:36:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:36:12,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:13,208 INFO L321 Elim1Store]: treesize reduction 168, result has 25.3 percent of original size [2022-12-13 12:36:13,208 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 96 treesize of output 81 [2022-12-13 12:36:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 12:36:13,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:36:13,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606196774] [2022-12-13 12:36:13,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606196774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:13,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:36:13,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-12-13 12:36:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268341203] [2022-12-13 12:36:13,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:13,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:36:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:36:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:36:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:36:15,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 278 [2022-12-13 12:36:15,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 352 transitions, 6842 flow. Second operand has 16 states, 16 states have (on average 103.875) internal successors, (1662), 16 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:15,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:15,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 278 [2022-12-13 12:36:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:17,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:36:19,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:36:21,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:36:24,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 12:36:26,347 WARN L539 Checker$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 12:36:43,012 INFO L130 PetriNetUnfolder]: 42977/78794 cut-off events. [2022-12-13 12:36:43,012 INFO L131 PetriNetUnfolder]: For 862491/862491 co-relation queries the response was YES. [2022-12-13 12:36:43,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402047 conditions, 78794 events. 42977/78794 cut-off events. For 862491/862491 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 763820 event pairs, 4164 based on Foata normal form. 25/78819 useless extension candidates. Maximal degree in co-relation 401944. Up to 16404 conditions per place. [2022-12-13 12:36:43,917 INFO L137 encePairwiseOnDemand]: 274/278 looper letters, 125 selfloop transitions, 290 changer transitions 38/453 dead transitions. [2022-12-13 12:36:43,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 453 transitions, 8362 flow [2022-12-13 12:36:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 12:36:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 12:36:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1433 transitions. [2022-12-13 12:36:43,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.396513558384062 [2022-12-13 12:36:43,920 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1433 transitions. [2022-12-13 12:36:43,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1433 transitions. [2022-12-13 12:36:43,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:43,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1433 transitions. [2022-12-13 12:36:43,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.23076923076923) internal successors, (1433), 13 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:43,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:43,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 278.0) internal successors, (3892), 14 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:43,925 INFO L175 Difference]: Start difference. First operand has 239 places, 352 transitions, 6842 flow. Second operand 13 states and 1433 transitions. [2022-12-13 12:36:43,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 453 transitions, 8362 flow [2022-12-13 12:37:08,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 453 transitions, 7974 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-12-13 12:37:08,566 INFO L231 Difference]: Finished difference. Result has 241 places, 358 transitions, 7200 flow [2022-12-13 12:37:08,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7200, PETRI_PLACES=241, PETRI_TRANSITIONS=358} [2022-12-13 12:37:08,567 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 207 predicate places. [2022-12-13 12:37:08,567 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 358 transitions, 7200 flow [2022-12-13 12:37:08,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.875) internal successors, (1662), 16 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:08,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:37:08,567 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:08,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (30)] Forceful destruction successful, exit code 0 [2022-12-13 12:37:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:37:08,768 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:37:08,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1266621651, now seen corresponding path program 15 times [2022-12-13 12:37:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:37:08,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022005341] [2022-12-13 12:37:08,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:37:08,771 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 12:37:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:37:08,774 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:37:08,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (31)] Waiting until timeout for monitored process [2022-12-13 12:37:08,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:37:08,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:37:09,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 12:37:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:37:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:09,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:37:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:37:10,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:37:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022005341] [2022-12-13 12:37:10,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022005341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:37:10,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:37:10,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-12-13 12:37:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301893013] [2022-12-13 12:37:10,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:37:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 12:37:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:37:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 12:37:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-12-13 12:37:12,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 278 [2022-12-13 12:37:12,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 358 transitions, 7200 flow. Second operand has 24 states, 24 states have (on average 107.70833333333333) internal successors, (2585), 24 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:12,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:37:12,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 278 [2022-12-13 12:37:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:37:46,904 INFO L130 PetriNetUnfolder]: 71992/131830 cut-off events. [2022-12-13 12:37:46,904 INFO L131 PetriNetUnfolder]: For 1403331/1403331 co-relation queries the response was YES. [2022-12-13 12:37:48,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680042 conditions, 131830 events. 71992/131830 cut-off events. For 1403331/1403331 co-relation queries the response was YES. Maximal size of possible extension queue 3246. Compared 1377661 event pairs, 10142 based on Foata normal form. 493/132323 useless extension candidates. Maximal degree in co-relation 679940. Up to 40843 conditions per place. [2022-12-13 12:37:48,433 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 218 selfloop transitions, 337 changer transitions 5/560 dead transitions. [2022-12-13 12:37:48,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 560 transitions, 11110 flow [2022-12-13 12:37:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:37:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:37:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2282 transitions. [2022-12-13 12:37:48,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.410431654676259 [2022-12-13 12:37:48,438 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2282 transitions. [2022-12-13 12:37:48,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2282 transitions. [2022-12-13 12:37:48,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:37:48,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2282 transitions. [2022-12-13 12:37:48,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 114.1) internal successors, (2282), 20 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 278.0) internal successors, (5838), 21 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:48,444 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 278.0) internal successors, (5838), 21 states have internal predecessors, (5838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:48,444 INFO L175 Difference]: Start difference. First operand has 241 places, 358 transitions, 7200 flow. Second operand 20 states and 2282 transitions. [2022-12-13 12:37:48,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 560 transitions, 11110 flow [2022-12-13 12:38:48,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 560 transitions, 10340 flow, removed 224 selfloop flow, removed 8 redundant places. [2022-12-13 12:38:48,387 INFO L231 Difference]: Finished difference. Result has 253 places, 450 transitions, 8955 flow [2022-12-13 12:38:48,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=5491, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8955, PETRI_PLACES=253, PETRI_TRANSITIONS=450} [2022-12-13 12:38:48,388 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 219 predicate places. [2022-12-13 12:38:48,388 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 450 transitions, 8955 flow [2022-12-13 12:38:48,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 107.70833333333333) internal successors, (2585), 24 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:38:48,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:38:48,388 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:38:48,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (31)] Ended with exit code 0 [2022-12-13 12:38:48,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:38:48,589 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:38:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:38:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1113517567, now seen corresponding path program 16 times [2022-12-13 12:38:48,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:38:48,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147262239] [2022-12-13 12:38:48,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:38:48,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:38:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:38:48,595 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:38:48,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (32)] Waiting until timeout for monitored process [2022-12-13 12:38:48,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:38:48,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:38:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:38:48,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:38:48,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:38:48,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:38:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:38:48,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:38:48,993 INFO L321 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2022-12-13 12:38:48,993 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 90 treesize of output 27 [2022-12-13 12:38:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:38:49,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:38:49,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147262239] [2022-12-13 12:38:49,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147262239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:38:49,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:38:49,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 12:38:49,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924279647] [2022-12-13 12:38:49,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:38:49,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:38:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:38:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:38:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:38:49,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:38:49,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 450 transitions, 8955 flow. Second operand has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:38:49,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:38:49,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:38:49,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:39:25,163 INFO L130 PetriNetUnfolder]: 77182/141466 cut-off events. [2022-12-13 12:39:25,163 INFO L131 PetriNetUnfolder]: For 1659149/1659149 co-relation queries the response was YES. [2022-12-13 12:39:26,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757725 conditions, 141466 events. 77182/141466 cut-off events. For 1659149/1659149 co-relation queries the response was YES. Maximal size of possible extension queue 3488. Compared 1481408 event pairs, 7518 based on Foata normal form. 408/141874 useless extension candidates. Maximal degree in co-relation 757622. Up to 35969 conditions per place. [2022-12-13 12:39:26,952 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 180 selfloop transitions, 419 changer transitions 24/623 dead transitions. [2022-12-13 12:39:26,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 623 transitions, 12046 flow [2022-12-13 12:39:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:39:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:39:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2214 transitions. [2022-12-13 12:39:26,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41915940931465356 [2022-12-13 12:39:26,956 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2214 transitions. [2022-12-13 12:39:26,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2214 transitions. [2022-12-13 12:39:26,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:39:26,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2214 transitions. [2022-12-13 12:39:26,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 116.52631578947368) internal successors, (2214), 19 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:26,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:26,961 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 278.0) internal successors, (5560), 20 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:26,962 INFO L175 Difference]: Start difference. First operand has 253 places, 450 transitions, 8955 flow. Second operand 19 states and 2214 transitions. [2022-12-13 12:39:26,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 623 transitions, 12046 flow [2022-12-13 12:41:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 623 transitions, 11529 flow, removed 253 selfloop flow, removed 5 redundant places. [2022-12-13 12:41:03,877 INFO L231 Difference]: Finished difference. Result has 276 places, 503 transitions, 10610 flow [2022-12-13 12:41:03,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=8564, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10610, PETRI_PLACES=276, PETRI_TRANSITIONS=503} [2022-12-13 12:41:03,878 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 242 predicate places. [2022-12-13 12:41:03,878 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 503 transitions, 10610 flow [2022-12-13 12:41:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 110.0) internal successors, (1430), 13 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:03,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:03,878 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:41:03,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (32)] Ended with exit code 0 [2022-12-13 12:41:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:41:04,079 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 12:41:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:04,080 INFO L85 PathProgramCache]: Analyzing trace with hash 369654919, now seen corresponding path program 17 times [2022-12-13 12:41:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:41:04,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290367041] [2022-12-13 12:41:04,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:41:04,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 12:41:04,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:41:04,084 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 12:41:04,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e23b273-da56-44a1-9dca-9fb7823aa395/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 (33)] Waiting until timeout for monitored process [2022-12-13 12:41:04,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 12:41:04,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:41:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 12:41:04,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:41:04,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:41:04,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2022-12-13 12:41:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:41:04,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:41:04,629 INFO L321 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2022-12-13 12:41:04,630 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 91 treesize of output 29 [2022-12-13 12:41:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:41:04,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 12:41:04,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290367041] [2022-12-13 12:41:04,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290367041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:41:04,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:41:04,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 12:41:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058543576] [2022-12-13 12:41:04,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:41:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:41:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 12:41:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:41:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:41:05,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 278 [2022-12-13 12:41:05,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 503 transitions, 10610 flow. Second operand has 14 states, 14 states have (on average 109.92857142857143) internal successors, (1539), 14 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:05,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:05,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 278 [2022-12-13 12:41:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:07,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:41:10,144 WARN L539 Checker$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 12:42:01,559 INFO L130 PetriNetUnfolder]: 95374/174650 cut-off events. [2022-12-13 12:42:01,559 INFO L131 PetriNetUnfolder]: For 2302513/2302513 co-relation queries the response was YES. [2022-12-13 12:42:03,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919161 conditions, 174650 events. 95374/174650 cut-off events. For 2302513/2302513 co-relation queries the response was YES. Maximal size of possible extension queue 4351. Compared 1869254 event pairs, 6265 based on Foata normal form. 371/175021 useless extension candidates. Maximal degree in co-relation 919047. Up to 36312 conditions per place. [2022-12-13 12:42:03,972 INFO L137 encePairwiseOnDemand]: 273/278 looper letters, 220 selfloop transitions, 600 changer transitions 39/859 dead transitions. [2022-12-13 12:42:03,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 859 transitions, 16755 flow [2022-12-13 12:42:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 12:42:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-13 12:42:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3603 transitions. [2022-12-13 12:42:03,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41807844047342774 [2022-12-13 12:42:03,977 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3603 transitions. [2022-12-13 12:42:03,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3603 transitions. [2022-12-13 12:42:03,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:42:03,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3603 transitions. [2022-12-13 12:42:03,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 116.2258064516129) internal successors, (3603), 31 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:03,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:03,986 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 278.0) internal successors, (8896), 32 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:03,986 INFO L175 Difference]: Start difference. First operand has 276 places, 503 transitions, 10610 flow. Second operand 31 states and 3603 transitions. [2022-12-13 12:42:03,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 859 transitions, 16755 flow