./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:38:39,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:38:39,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:38:39,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:38:39,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:38:39,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:38:39,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:38:39,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:38:39,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:38:39,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:38:39,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:38:39,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:38:39,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:38:39,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:38:39,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:38:39,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:38:39,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:38:39,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:38:39,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:38:39,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:38:39,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:38:39,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:38:39,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:38:39,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:38:39,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:38:39,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:38:39,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:38:39,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:38:39,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:38:39,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:38:39,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:38:39,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:38:39,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:38:39,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:38:39,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:38:39,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:38:39,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:38:39,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:38:39,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:38:39,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:38:39,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:38:39,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:38:39,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:38:39,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:38:39,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:38:39,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:38:39,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:38:39,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:38:39,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:38:39,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:38:39,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:38:39,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:38:39,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:38:39,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:38:39,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:38:39,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:38:39,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:38:39,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:38:39,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:38:39,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:38:39,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:38:39,408 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:38:39,408 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:38:39,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:38:39,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:38:39,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:38:39,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:38:39,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:38:39,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:38:39,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:38:39,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:38:39,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:38:39,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:38:39,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:38:39,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:38:39,411 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_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2022-11-25 17:38:39,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:38:39,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:38:39,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:38:39,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:38:39,752 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:38:39,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-25 17:38:42,773 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:38:42,958 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:38:42,959 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-25 17:38:42,966 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/data/d217d0059/10a05833ac3c424bb0d9a1c935403c26/FLAGac2772e57 [2022-11-25 17:38:42,983 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/data/d217d0059/10a05833ac3c424bb0d9a1c935403c26 [2022-11-25 17:38:42,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:38:42,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:38:42,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:38:42,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:38:42,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:38:42,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:38:42" (1/1) ... [2022-11-25 17:38:43,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c909d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43, skipping insertion in model container [2022-11-25 17:38:43,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:38:42" (1/1) ... [2022-11-25 17:38:43,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:38:43,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:38:43,220 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-25 17:38:43,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:38:43,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:38:43,276 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_b597fb7c-a079-4932-b647-68cf4e25adb4/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-25 17:38:43,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:38:43,297 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:38:43,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43 WrapperNode [2022-11-25 17:38:43,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:38:43,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:38:43,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:38:43,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:38:43,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,346 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-11-25 17:38:43,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:38:43,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:38:43,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:38:43,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:38:43,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,374 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:38:43,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:38:43,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:38:43,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:38:43,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (1/1) ... [2022-11-25 17:38:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:38:43,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:38:43,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:38:43,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:38:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:38:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:38:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:38:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:38:43,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:38:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:38:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:38:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:38:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:38:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:38:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:38:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:38:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:38:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:38:43,503 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:38:43,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:38:43,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:38:44,232 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:38:44,244 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:38:44,244 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:38:44,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:38:44 BoogieIcfgContainer [2022-11-25 17:38:44,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:38:44,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:38:44,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:38:44,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:38:44,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:38:42" (1/3) ... [2022-11-25 17:38:44,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2c270c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:38:44, skipping insertion in model container [2022-11-25 17:38:44,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:38:43" (2/3) ... [2022-11-25 17:38:44,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2c270c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:38:44, skipping insertion in model container [2022-11-25 17:38:44,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:38:44" (3/3) ... [2022-11-25 17:38:44,258 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2022-11-25 17:38:44,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:38:44,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 17:38:44,283 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:38:44,473 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:38:44,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 248 transitions, 520 flow [2022-11-25 17:38:44,738 INFO L130 PetriNetUnfolder]: 17/245 cut-off events. [2022-11-25 17:38:44,738 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:38:44,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 17/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 555 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2022-11-25 17:38:44,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 248 transitions, 520 flow [2022-11-25 17:38:44,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 240 transitions, 498 flow [2022-11-25 17:38:44,772 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:38:44,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 240 transitions, 498 flow [2022-11-25 17:38:44,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 240 transitions, 498 flow [2022-11-25 17:38:44,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 240 transitions, 498 flow [2022-11-25 17:38:44,932 INFO L130 PetriNetUnfolder]: 17/240 cut-off events. [2022-11-25 17:38:44,932 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:38:44,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 240 events. 17/240 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 555 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2022-11-25 17:38:44,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 17010 [2022-11-25 17:38:55,506 INFO L134 LiptonReduction]: Checked pairs total: 15745 [2022-11-25 17:38:55,506 INFO L136 LiptonReduction]: Total number of compositions: 298 [2022-11-25 17:38:55,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:38:55,532 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;@41358502, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:38:55,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:38:55,534 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:38:55,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:55,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:55,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:38:55,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1028, now seen corresponding path program 1 times [2022-11-25 17:38:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:55,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616626755] [2022-11-25 17:38:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:55,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616626755] [2022-11-25 17:38:55,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616626755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:55,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:55,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:38:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334748624] [2022-11-25 17:38:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:38:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:38:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:38:55,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 546 [2022-11-25 17:38:55,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 233.5) internal successors, (467), 2 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:55,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:55,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 546 [2022-11-25 17:38:55,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:55,897 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2022-11-25 17:38:55,898 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-25 17:38:55,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 464 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2022-11-25 17:38:55,905 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2022-11-25 17:38:55,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2022-11-25 17:38:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:38:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:38:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 495 transitions. [2022-11-25 17:38:55,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4532967032967033 [2022-11-25 17:38:55,939 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 495 transitions. [2022-11-25 17:38:55,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 495 transitions. [2022-11-25 17:38:55,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:55,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 495 transitions. [2022-11-25 17:38:55,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 247.5) internal successors, (495), 2 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:55,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 546.0) internal successors, (1638), 3 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:55,967 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 546.0) internal successors, (1638), 3 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:55,969 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 495 transitions. [2022-11-25 17:38:55,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2022-11-25 17:38:55,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:38:55,976 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2022-11-25 17:38:55,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-11-25 17:38:55,983 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:38:55,983 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2022-11-25 17:38:55,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 233.5) internal successors, (467), 2 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:55,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:55,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:38:55,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:38:55,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1011465, now seen corresponding path program 1 times [2022-11-25 17:38:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:55,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907227593] [2022-11-25 17:38:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:56,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:56,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907227593] [2022-11-25 17:38:56,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907227593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:56,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:56,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:56,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594248945] [2022-11-25 17:38:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:56,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:56,496 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 546 [2022-11-25 17:38:56,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:56,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 546 [2022-11-25 17:38:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:56,618 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2022-11-25 17:38:56,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:56,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 421 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2022-11-25 17:38:56,620 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-11-25 17:38:56,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2022-11-25 17:38:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2022-11-25 17:38:56,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43345543345543347 [2022-11-25 17:38:56,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2022-11-25 17:38:56,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2022-11-25 17:38:56,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:56,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2022-11-25 17:38:56,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,633 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 710 transitions. [2022-11-25 17:38:56,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2022-11-25 17:38:56,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:38:56,635 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2022-11-25 17:38:56,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-11-25 17:38:56,636 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2022-11-25 17:38:56,636 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2022-11-25 17:38:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:56,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:38:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:38:56,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1011464, now seen corresponding path program 1 times [2022-11-25 17:38:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028647665] [2022-11-25 17:38:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:56,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:56,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028647665] [2022-11-25 17:38:56,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028647665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:56,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:56,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678097663] [2022-11-25 17:38:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:56,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:56,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:56,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 546 [2022-11-25 17:38:56,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:56,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 546 [2022-11-25 17:38:56,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:56,937 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2022-11-25 17:38:56,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:56,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 384 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2022-11-25 17:38:56,938 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-11-25 17:38:56,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2022-11-25 17:38:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-11-25 17:38:56,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2022-11-25 17:38:56,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-11-25 17:38:56,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-11-25 17:38:56,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:56,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-11-25 17:38:56,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,950 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 693 transitions. [2022-11-25 17:38:56,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2022-11-25 17:38:56,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:38:56,952 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2022-11-25 17:38:56,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 17:38:56,953 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2022-11-25 17:38:56,953 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2022-11-25 17:38:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:56,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:56,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:38:56,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:38:56,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash 972038665, now seen corresponding path program 1 times [2022-11-25 17:38:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866014381] [2022-11-25 17:38:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866014381] [2022-11-25 17:38:57,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866014381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:57,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:57,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035541469] [2022-11-25 17:38:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:57,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 546 [2022-11-25 17:38:57,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:57,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 546 [2022-11-25 17:38:57,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:57,142 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2022-11-25 17:38:57,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:57,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 339 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2022-11-25 17:38:57,143 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2022-11-25 17:38:57,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2022-11-25 17:38:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2022-11-25 17:38:57,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42185592185592186 [2022-11-25 17:38:57,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 691 transitions. [2022-11-25 17:38:57,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 691 transitions. [2022-11-25 17:38:57,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:57,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 691 transitions. [2022-11-25 17:38:57,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,159 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 691 transitions. [2022-11-25 17:38:57,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2022-11-25 17:38:57,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:38:57,160 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2022-11-25 17:38:57,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2022-11-25 17:38:57,161 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2022-11-25 17:38:57,161 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2022-11-25 17:38:57,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:57,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:38:57,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:38:57,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash 972038666, now seen corresponding path program 1 times [2022-11-25 17:38:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:57,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697866539] [2022-11-25 17:38:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:57,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:57,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697866539] [2022-11-25 17:38:57,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697866539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:57,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:57,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:57,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712612610] [2022-11-25 17:38:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:57,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:57,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:57,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:57,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 546 [2022-11-25 17:38:57,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:57,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 546 [2022-11-25 17:38:57,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:57,366 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2022-11-25 17:38:57,366 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:57,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 296 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2022-11-25 17:38:57,367 INFO L137 encePairwiseOnDemand]: 543/546 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2022-11-25 17:38:57,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2022-11-25 17:38:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2022-11-25 17:38:57,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297924297924298 [2022-11-25 17:38:57,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2022-11-25 17:38:57,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2022-11-25 17:38:57,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:57,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2022-11-25 17:38:57,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,377 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 704 transitions. [2022-11-25 17:38:57,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2022-11-25 17:38:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:38:57,379 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2022-11-25 17:38:57,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-11-25 17:38:57,379 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:38:57,380 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2022-11-25 17:38:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:57,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:38:57,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:38:57,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2121275484, now seen corresponding path program 1 times [2022-11-25 17:38:57,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806435192] [2022-11-25 17:38:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:57,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806435192] [2022-11-25 17:38:57,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806435192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:57,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:57,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:38:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201568611] [2022-11-25 17:38:57,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:57,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:38:57,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:38:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:38:57,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 546 [2022-11-25 17:38:57,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:57,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 546 [2022-11-25 17:38:57,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:57,644 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2022-11-25 17:38:57,644 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:57,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2022-11-25 17:38:57,645 INFO L137 encePairwiseOnDemand]: 544/546 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2022-11-25 17:38:57,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2022-11-25 17:38:57,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2022-11-25 17:38:57,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2022-11-25 17:38:57,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2022-11-25 17:38:57,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2022-11-25 17:38:57,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:57,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2022-11-25 17:38:57,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,655 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 702 transitions. [2022-11-25 17:38:57,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2022-11-25 17:38:57,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:38:57,657 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2022-11-25 17:38:57,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2022-11-25 17:38:57,658 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:38:57,659 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2022-11-25 17:38:57,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:57,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:38:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:38:57,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2121275483, now seen corresponding path program 1 times [2022-11-25 17:38:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453246665] [2022-11-25 17:38:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:38:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:38:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453246665] [2022-11-25 17:38:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453246665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:38:57,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:38:57,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:38:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685174428] [2022-11-25 17:38:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:38:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:38:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:38:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:38:57,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 546 [2022-11-25 17:38:57,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:38:57,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 546 [2022-11-25 17:38:57,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:38:57,947 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2022-11-25 17:38:57,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:38:57,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2022-11-25 17:38:57,948 INFO L137 encePairwiseOnDemand]: 544/546 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2022-11-25 17:38:57,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2022-11-25 17:38:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:38:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:38:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2022-11-25 17:38:57,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40415140415140416 [2022-11-25 17:38:57,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2022-11-25 17:38:57,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2022-11-25 17:38:57,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:38:57,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2022-11-25 17:38:57,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 546.0) internal successors, (2184), 4 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,957 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 662 transitions. [2022-11-25 17:38:57,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2022-11-25 17:38:57,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:38:57,959 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2022-11-25 17:38:57,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2022-11-25 17:38:57,961 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2022-11-25 17:38:57,961 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2022-11-25 17:38:57,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:38:57,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:38:57,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:38:57,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:38:57,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:38:57,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:38:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1271409436, now seen corresponding path program 1 times [2022-11-25 17:38:57,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:38:57,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607408344] [2022-11-25 17:38:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:38:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:38:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:01,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:01,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607408344] [2022-11-25 17:39:01,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607408344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:01,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:01,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646288554] [2022-11-25 17:39:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:01,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 546 [2022-11-25 17:39:01,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:01,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:01,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 546 [2022-11-25 17:39:01,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:01,851 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2022-11-25 17:39:01,851 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:39:01,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 320 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2022-11-25 17:39:01,852 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2022-11-25 17:39:01,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2022-11-25 17:39:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1324 transitions. [2022-11-25 17:39:01,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40415140415140416 [2022-11-25 17:39:01,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1324 transitions. [2022-11-25 17:39:01,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1324 transitions. [2022-11-25 17:39:01,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:01,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1324 transitions. [2022-11-25 17:39:01,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:01,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:01,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:01,869 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1324 transitions. [2022-11-25 17:39:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2022-11-25 17:39:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:39:01,871 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2022-11-25 17:39:01,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2022-11-25 17:39:01,874 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2022-11-25 17:39:01,874 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2022-11-25 17:39:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:01,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:01,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:39:01,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:39:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1468557106, now seen corresponding path program 2 times [2022-11-25 17:39:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:01,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150260077] [2022-11-25 17:39:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:04,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:04,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150260077] [2022-11-25 17:39:04,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150260077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:04,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:04,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436648446] [2022-11-25 17:39:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:04,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 546 [2022-11-25 17:39:04,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:04,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:04,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 546 [2022-11-25 17:39:04,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:04,853 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2022-11-25 17:39:04,854 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-25 17:39:04,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 406 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2022-11-25 17:39:04,854 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2022-11-25 17:39:04,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2022-11-25 17:39:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2022-11-25 17:39:04,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40354090354090355 [2022-11-25 17:39:04,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1322 transitions. [2022-11-25 17:39:04,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1322 transitions. [2022-11-25 17:39:04,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:04,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1322 transitions. [2022-11-25 17:39:04,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:04,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:04,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:04,888 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1322 transitions. [2022-11-25 17:39:04,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2022-11-25 17:39:04,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 17:39:04,891 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2022-11-25 17:39:04,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2022-11-25 17:39:04,892 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-25 17:39:04,892 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2022-11-25 17:39:04,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:04,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:04,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:04,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:39:04,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:39:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1674913056, now seen corresponding path program 3 times [2022-11-25 17:39:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132245518] [2022-11-25 17:39:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:04,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:06,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132245518] [2022-11-25 17:39:06,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132245518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:06,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:06,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244441836] [2022-11-25 17:39:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:06,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:07,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 546 [2022-11-25 17:39:07,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:07,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:07,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 546 [2022-11-25 17:39:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:08,037 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2022-11-25 17:39:08,037 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-25 17:39:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2022-11-25 17:39:08,038 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2022-11-25 17:39:08,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2022-11-25 17:39:08,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2022-11-25 17:39:08,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2022-11-25 17:39:08,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2022-11-25 17:39:08,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2022-11-25 17:39:08,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:08,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2022-11-25 17:39:08,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:08,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:08,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:08,054 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1326 transitions. [2022-11-25 17:39:08,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2022-11-25 17:39:08,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-25 17:39:08,057 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2022-11-25 17:39:08,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2022-11-25 17:39:08,058 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-11-25 17:39:08,058 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2022-11-25 17:39:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:08,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:08,059 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:39:08,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:39:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1578006452, now seen corresponding path program 4 times [2022-11-25 17:39:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475714732] [2022-11-25 17:39:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:10,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475714732] [2022-11-25 17:39:10,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475714732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:10,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:10,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081573042] [2022-11-25 17:39:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:10,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 546 [2022-11-25 17:39:10,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:10,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:10,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 546 [2022-11-25 17:39:10,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:11,378 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2022-11-25 17:39:11,378 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-25 17:39:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2022-11-25 17:39:11,379 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2022-11-25 17:39:11,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2022-11-25 17:39:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1312 transitions. [2022-11-25 17:39:11,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4004884004884005 [2022-11-25 17:39:11,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1312 transitions. [2022-11-25 17:39:11,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1312 transitions. [2022-11-25 17:39:11,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:11,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1312 transitions. [2022-11-25 17:39:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:11,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:11,409 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:11,409 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1312 transitions. [2022-11-25 17:39:11,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2022-11-25 17:39:11,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:39:11,414 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2022-11-25 17:39:11,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2022-11-25 17:39:11,415 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2022-11-25 17:39:11,415 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2022-11-25 17:39:11,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:11,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:11,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:39:11,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:39:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1227555848, now seen corresponding path program 5 times [2022-11-25 17:39:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:11,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273827573] [2022-11-25 17:39:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:13,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273827573] [2022-11-25 17:39:13,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273827573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:13,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:13,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654672715] [2022-11-25 17:39:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:13,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:13,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:13,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 546 [2022-11-25 17:39:13,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:13,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:13,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 546 [2022-11-25 17:39:13,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:14,282 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-11-25 17:39:14,283 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 17:39:14,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2022-11-25 17:39:14,283 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2022-11-25 17:39:14,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2022-11-25 17:39:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1306 transitions. [2022-11-25 17:39:14,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3986568986568987 [2022-11-25 17:39:14,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1306 transitions. [2022-11-25 17:39:14,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1306 transitions. [2022-11-25 17:39:14,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:14,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1306 transitions. [2022-11-25 17:39:14,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:14,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:14,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:14,298 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1306 transitions. [2022-11-25 17:39:14,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2022-11-25 17:39:14,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 17:39:14,300 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2022-11-25 17:39:14,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2022-11-25 17:39:14,302 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-25 17:39:14,302 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2022-11-25 17:39:14,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:14,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:39:14,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:14,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:39:14,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 17:39:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash -723854608, now seen corresponding path program 6 times [2022-11-25 17:39:14,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:39:14,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138140927] [2022-11-25 17:39:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:14,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:39:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:39:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:39:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138140927] [2022-11-25 17:39:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138140927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:39:16,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:39:16,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:39:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717016200] [2022-11-25 17:39:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:39:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:39:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:39:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:39:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:39:16,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 546 [2022-11-25 17:39:16,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:16,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:39:16,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 546 [2022-11-25 17:39:16,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:39:16,805 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2022-11-25 17:39:16,805 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 17:39:16,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2022-11-25 17:39:16,806 INFO L137 encePairwiseOnDemand]: 541/546 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-11-25 17:39:16,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2022-11-25 17:39:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:39:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:39:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2022-11-25 17:39:16,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3983516483516483 [2022-11-25 17:39:16,810 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2022-11-25 17:39:16,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2022-11-25 17:39:16,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:39:16,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2022-11-25 17:39:16,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:16,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:16,820 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 546.0) internal successors, (3822), 7 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:16,820 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1305 transitions. [2022-11-25 17:39:16,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2022-11-25 17:39:16,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 17:39:16,821 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-11-25 17:39:16,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=546, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-11-25 17:39:16,822 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-11-25 17:39:16,822 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-11-25 17:39:16,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:39:16,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-11-25 17:39:16,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-11-25 17:39:16,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-11-25 17:39:16,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-11-25 17:39:16,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-11-25 17:39:16,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-11-25 17:39:16,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-11-25 17:39:16,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-11-25 17:39:16,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-11-25 17:39:16,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-11-25 17:39:16,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-11-25 17:39:16,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-11-25 17:39:16,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-11-25 17:39:16,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-11-25 17:39:16,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-11-25 17:39:16,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-11-25 17:39:16,829 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-11-25 17:39:16,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:39:16,829 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:39:16,832 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:39:16,833 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:39:16,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:39:16 BasicIcfg [2022-11-25 17:39:16,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:39:16,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:39:16,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:39:16,837 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:39:16,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:38:44" (3/4) ... [2022-11-25 17:39:16,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:39:16,847 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:39:16,847 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:39:16,848 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:39:16,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-25 17:39:16,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:39:16,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:39:16,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:39:16,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:39:16,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:39:16,887 INFO L158 Benchmark]: Toolchain (without parser) took 33900.18ms. Allocated memory was 153.1MB in the beginning and 507.5MB in the end (delta: 354.4MB). Free memory was 109.0MB in the beginning and 182.3MB in the end (delta: -73.3MB). Peak memory consumption was 282.6MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,888 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:16,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.64ms. Allocated memory is still 153.1MB. Free memory was 109.0MB in the beginning and 97.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.25ms. Allocated memory is still 153.1MB. Free memory was 97.4MB in the beginning and 95.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,889 INFO L158 Benchmark]: Boogie Preprocessor took 32.22ms. Allocated memory is still 153.1MB. Free memory was 95.3MB in the beginning and 93.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:39:16,889 INFO L158 Benchmark]: RCFGBuilder took 867.19ms. Allocated memory is still 153.1MB. Free memory was 93.7MB in the beginning and 119.2MB in the end (delta: -25.5MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,889 INFO L158 Benchmark]: TraceAbstraction took 32586.17ms. Allocated memory was 153.1MB in the beginning and 507.5MB in the end (delta: 354.4MB). Free memory was 118.3MB in the beginning and 185.4MB in the end (delta: -67.2MB). Peak memory consumption was 288.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,890 INFO L158 Benchmark]: Witness Printer took 49.86ms. Allocated memory is still 507.5MB. Free memory was 185.4MB in the beginning and 182.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:39:16,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 82.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.64ms. Allocated memory is still 153.1MB. Free memory was 109.0MB in the beginning and 97.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.25ms. Allocated memory is still 153.1MB. Free memory was 97.4MB in the beginning and 95.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.22ms. Allocated memory is still 153.1MB. Free memory was 95.3MB in the beginning and 93.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 867.19ms. Allocated memory is still 153.1MB. Free memory was 93.7MB in the beginning and 119.2MB in the end (delta: -25.5MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32586.17ms. Allocated memory was 153.1MB in the beginning and 507.5MB in the end (delta: 354.4MB). Free memory was 118.3MB in the beginning and 185.4MB in the end (delta: -67.2MB). Peak memory consumption was 288.1MB. Max. memory is 16.1GB. * Witness Printer took 49.86ms. Allocated memory is still 507.5MB. Free memory was 185.4MB in the beginning and 182.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7s, 233 PlacesBefore, 39 PlacesAfterwards, 240 TransitionsBefore, 29 TransitionsAfterwards, 17010 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 142 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 57 ConcurrentYvCompositions, 17 ChoiceCompositions, 298 TotalNumberOfCompositions, 15745 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15745, independent: 15745, independent conditional: 0, independent unconditional: 15745, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12808, independent: 12808, independent conditional: 0, independent unconditional: 12808, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12808, independent: 12808, independent conditional: 0, independent unconditional: 12808, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 15745, independent: 2937, independent conditional: 0, independent unconditional: 2937, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 12808, unknown conditional: 0, unknown unconditional: 12808] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 81]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 358 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1488 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1797 IncrementalHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 105 mSDtfsCounter, 1797 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:39:16,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b597fb7c-a079-4932-b647-68cf4e25adb4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE