./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS --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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- 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-4e7fbc6 [2022-11-23 02:13:33,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:13:33,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:13:33,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:13:33,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:13:33,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:13:33,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:13:33,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:13:33,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:13:33,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:13:33,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:13:33,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:13:33,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:13:33,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:13:33,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:13:33,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:13:33,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:13:33,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:13:33,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:13:33,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:13:33,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:13:33,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:13:33,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:13:33,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:13:33,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:13:33,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:13:33,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:13:33,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:13:33,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:13:33,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:13:33,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:13:33,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:13:33,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:13:33,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:13:33,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:13:33,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:13:33,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:13:33,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:13:33,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:13:33,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:13:33,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:13:33,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 02:13:33,352 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:13:33,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:13:33,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:13:33,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:13:33,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:13:33,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:13:33,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:13:33,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:13:33,378 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:13:33,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:13:33,380 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:13:33,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:13:33,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:13:33,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:13:33,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:13:33,381 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:13:33,382 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:13:33,382 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:13:33,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:13:33,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:13:33,383 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:13:33,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:13:33,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:13:33,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:13:33,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:13:33,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:13:33,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:13:33,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:13:33,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:13:33,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:13:33,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:13:33,387 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:13:33,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:13:33,388 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_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2022-11-23 02:13:33,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:13:33,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:13:33,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:13:33,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:13:33,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:13:33,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-23 02:13:37,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:13:37,338 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:13:37,344 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-23 02:13:37,364 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/1e2d33d44/7d20fdcc0157452f94e6a349ef9b76c2/FLAG05de8ea4a [2022-11-23 02:13:37,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/1e2d33d44/7d20fdcc0157452f94e6a349ef9b76c2 [2022-11-23 02:13:37,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:13:37,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:13:37,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:13:37,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:13:37,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:13:37,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:37" (1/1) ... [2022-11-23 02:13:37,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48efb68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:37, skipping insertion in model container [2022-11-23 02:13:37,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:37" (1/1) ... [2022-11-23 02:13:37,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:13:37,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:13:37,910 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_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-23 02:13:37,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:13:37,924 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:13:37,981 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_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-23 02:13:37,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:13:38,036 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:13:38,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38 WrapperNode [2022-11-23 02:13:38,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:13:38,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:13:38,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:13:38,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:13:38,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,080 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-23 02:13:38,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:13:38,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:13:38,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:13:38,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:13:38,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,105 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:13:38,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:13:38,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:13:38,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:13:38,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2022-11-23 02:13:38,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:13:38,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:38,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:13:38,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:13:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 02:13:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 02:13:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 02:13:38,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 02:13:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:13:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:13:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:13:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:13:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:13:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:13:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:13:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:13:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:13:38,217 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:13:38,372 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:13:38,374 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:13:38,571 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:13:38,577 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:13:38,577 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 02:13:38,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:38 BoogieIcfgContainer [2022-11-23 02:13:38,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:13:38,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:13:38,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:13:38,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:13:38,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:37" (1/3) ... [2022-11-23 02:13:38,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c9522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:38, skipping insertion in model container [2022-11-23 02:13:38,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (2/3) ... [2022-11-23 02:13:38,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7c9522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:38, skipping insertion in model container [2022-11-23 02:13:38,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:38" (3/3) ... [2022-11-23 02:13:38,595 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2022-11-23 02:13:38,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:13:38,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 02:13:38,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:13:38,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:13:38,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 166 flow [2022-11-23 02:13:38,750 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-11-23 02:13:38,750 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:13:38,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 02:13:38,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 166 flow [2022-11-23 02:13:38,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 76 transitions, 158 flow [2022-11-23 02:13:38,769 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:13:38,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 76 transitions, 158 flow [2022-11-23 02:13:38,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 76 transitions, 158 flow [2022-11-23 02:13:38,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 158 flow [2022-11-23 02:13:38,854 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-11-23 02:13:38,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:13:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 02:13:38,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-11-23 02:13:42,265 INFO L134 LiptonReduction]: Checked pairs total: 1170 [2022-11-23 02:13:42,265 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-11-23 02:13:42,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:13:42,287 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;@7c9782af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:13:42,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 02:13:42,288 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 02:13:42,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:13:42,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:42,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:13:42,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:42,295 INFO L85 PathProgramCache]: Analyzing trace with hash 307, now seen corresponding path program 1 times [2022-11-23 02:13:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560101818] [2022-11-23 02:13:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:42,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:42,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:42,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560101818] [2022-11-23 02:13:42,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560101818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:42,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:42,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:13:42,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087819285] [2022-11-23 02:13:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:42,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:13:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:13:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:13:42,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 154 [2022-11-23 02:13:42,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:42,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 154 [2022-11-23 02:13:42,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:42,522 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2022-11-23 02:13:42,522 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:13:42,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 459 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2022-11-23 02:13:42,525 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-23 02:13:42,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-11-23 02:13:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:13:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:13:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2022-11-23 02:13:42,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2022-11-23 02:13:42,539 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2022-11-23 02:13:42,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2022-11-23 02:13:42,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:42,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2022-11-23 02:13:42,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,550 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,552 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 164 transitions. [2022-11-23 02:13:42,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-11-23 02:13:42,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:13:42,556 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2022-11-23 02:13:42,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-11-23 02:13:42,562 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 02:13:42,562 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2022-11-23 02:13:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:42,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:13:42,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:13:42,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:42,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 300586, now seen corresponding path program 1 times [2022-11-23 02:13:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:42,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103802276] [2022-11-23 02:13:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103802276] [2022-11-23 02:13:42,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103802276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:42,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:42,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:13:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267206487] [2022-11-23 02:13:42,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:42,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:42,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:42,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:42,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:42,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:42,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:42,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:42,833 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2022-11-23 02:13:42,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:13:42,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 356 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2022-11-23 02:13:42,835 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-23 02:13:42,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2022-11-23 02:13:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:13:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-11-23 02:13:42,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2022-11-23 02:13:42,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-11-23 02:13:42,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-11-23 02:13:42,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:42,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-11-23 02:13:42,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,842 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 217 transitions. [2022-11-23 02:13:42,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2022-11-23 02:13:42,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:13:42,843 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2022-11-23 02:13:42,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-23 02:13:42,844 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 02:13:42,844 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2022-11-23 02:13:42,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:42,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:42,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:13:42,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:13:42,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 300587, now seen corresponding path program 1 times [2022-11-23 02:13:42,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:42,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428258535] [2022-11-23 02:13:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428258535] [2022-11-23 02:13:42,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428258535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:42,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:42,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:13:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922358202] [2022-11-23 02:13:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:13:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:13:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:13:43,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2022-11-23 02:13:43,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:43,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2022-11-23 02:13:43,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:43,067 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2022-11-23 02:13:43,068 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:13:43,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 332 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2022-11-23 02:13:43,069 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-11-23 02:13:43,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2022-11-23 02:13:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:13:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:13:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-23 02:13:43,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2022-11-23 02:13:43,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-23 02:13:43,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-23 02:13:43,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:43,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-23 02:13:43,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,076 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 225 transitions. [2022-11-23 02:13:43,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2022-11-23 02:13:43,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:13:43,077 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-11-23 02:13:43,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-11-23 02:13:43,078 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2022-11-23 02:13:43,079 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-11-23 02:13:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:43,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:13:43,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:13:43,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash 365082317, now seen corresponding path program 1 times [2022-11-23 02:13:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:43,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362064137] [2022-11-23 02:13:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362064137] [2022-11-23 02:13:43,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362064137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:43,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:43,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:13:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669254330] [2022-11-23 02:13:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:13:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:13:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:13:43,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2022-11-23 02:13:43,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:43,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2022-11-23 02:13:43,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:43,383 INFO L130 PetriNetUnfolder]: 124/197 cut-off events. [2022-11-23 02:13:43,384 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:13:43,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 197 events. 124/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 536 event pairs, 11 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 418. Up to 97 conditions per place. [2022-11-23 02:13:43,386 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 24 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2022-11-23 02:13:43,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 122 flow [2022-11-23 02:13:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:13:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:13:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2022-11-23 02:13:43,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47564935064935066 [2022-11-23 02:13:43,388 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2022-11-23 02:13:43,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2022-11-23 02:13:43,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:43,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2022-11-23 02:13:43,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,393 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,393 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 4 states and 293 transitions. [2022-11-23 02:13:43,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 122 flow [2022-11-23 02:13:43,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:13:43,395 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 57 flow [2022-11-23 02:13:43,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2022-11-23 02:13:43,396 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2022-11-23 02:13:43,396 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 57 flow [2022-11-23 02:13:43,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:43,397 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:43,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:13:43,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:43,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1567349600, now seen corresponding path program 1 times [2022-11-23 02:13:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:43,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989744170] [2022-11-23 02:13:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:43,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:43,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989744170] [2022-11-23 02:13:43,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989744170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:43,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:43,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:13:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127069266] [2022-11-23 02:13:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:13:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:13:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:13:43,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-11-23 02:13:43,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:43,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-11-23 02:13:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:43,791 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-11-23 02:13:43,792 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-23 02:13:43,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 152 events. 94/152 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 386 event pairs, 35 based on Foata normal form. 15/148 useless extension candidates. Maximal degree in co-relation 373. Up to 107 conditions per place. [2022-11-23 02:13:43,793 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 14 selfloop transitions, 1 changer transitions 8/23 dead transitions. [2022-11-23 02:13:43,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 120 flow [2022-11-23 02:13:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:13:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:13:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-23 02:13:43,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2022-11-23 02:13:43,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-23 02:13:43,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-23 02:13:43,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:43,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-23 02:13:43,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,799 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 57 flow. Second operand 4 states and 272 transitions. [2022-11-23 02:13:43,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 120 flow [2022-11-23 02:13:43,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:13:43,800 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 55 flow [2022-11-23 02:13:43,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, 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=4, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2022-11-23 02:13:43,801 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-11-23 02:13:43,801 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 55 flow [2022-11-23 02:13:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:43,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:43,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:13:43,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:43,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1344083349, now seen corresponding path program 1 times [2022-11-23 02:13:43,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:43,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131977375] [2022-11-23 02:13:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:43,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131977375] [2022-11-23 02:13:43,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131977375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:43,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:43,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:43,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839553576] [2022-11-23 02:13:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:43,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:43,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:43,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:43,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:43,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:43,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:44,006 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-11-23 02:13:44,006 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-23 02:13:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 662 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 543. Up to 89 conditions per place. [2022-11-23 02:13:44,008 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-11-23 02:13:44,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 217 flow [2022-11-23 02:13:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:13:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:13:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2022-11-23 02:13:44,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2022-11-23 02:13:44,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2022-11-23 02:13:44,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2022-11-23 02:13:44,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:44,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2022-11-23 02:13:44,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,015 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,015 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 55 flow. Second operand 6 states and 428 transitions. [2022-11-23 02:13:44,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 217 flow [2022-11-23 02:13:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 42 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:13:44,017 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 135 flow [2022-11-23 02:13:44,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-11-23 02:13:44,018 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2022-11-23 02:13:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 135 flow [2022-11-23 02:13:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:44,019 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:13:44,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1344054519, now seen corresponding path program 2 times [2022-11-23 02:13:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:44,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488786994] [2022-11-23 02:13:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:44,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488786994] [2022-11-23 02:13:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488786994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:44,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:44,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:13:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891969469] [2022-11-23 02:13:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:13:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:13:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:13:44,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:44,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:44,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:44,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:44,295 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2022-11-23 02:13:44,295 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2022-11-23 02:13:44,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 638 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 645. Up to 84 conditions per place. [2022-11-23 02:13:44,298 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2022-11-23 02:13:44,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 285 flow [2022-11-23 02:13:44,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:13:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:13:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2022-11-23 02:13:44,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4649350649350649 [2022-11-23 02:13:44,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2022-11-23 02:13:44,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2022-11-23 02:13:44,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:44,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2022-11-23 02:13:44,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,303 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 135 flow. Second operand 5 states and 358 transitions. [2022-11-23 02:13:44,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 285 flow [2022-11-23 02:13:44,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 283 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-23 02:13:44,309 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 183 flow [2022-11-23 02:13:44,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2022-11-23 02:13:44,310 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2022-11-23 02:13:44,311 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 183 flow [2022-11-23 02:13:44,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:44,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:44,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:13:44,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:44,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:44,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1369600037, now seen corresponding path program 1 times [2022-11-23 02:13:44,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:44,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643387607] [2022-11-23 02:13:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:44,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:44,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:44,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643387607] [2022-11-23 02:13:44,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643387607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:44,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:44,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278193712] [2022-11-23 02:13:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:44,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:44,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:44,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:44,606 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2022-11-23 02:13:44,606 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2022-11-23 02:13:44,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 239 events. 136/239 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 807 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 852. Up to 101 conditions per place. [2022-11-23 02:13:44,608 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2022-11-23 02:13:44,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 420 flow [2022-11-23 02:13:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:13:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:13:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2022-11-23 02:13:44,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4601113172541744 [2022-11-23 02:13:44,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2022-11-23 02:13:44,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2022-11-23 02:13:44,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:44,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2022-11-23 02:13:44,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,616 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 183 flow. Second operand 7 states and 496 transitions. [2022-11-23 02:13:44,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 420 flow [2022-11-23 02:13:44,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 380 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-23 02:13:44,621 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 270 flow [2022-11-23 02:13:44,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2022-11-23 02:13:44,622 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2022-11-23 02:13:44,622 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 270 flow [2022-11-23 02:13:44,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:44,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:13:44,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1369801847, now seen corresponding path program 2 times [2022-11-23 02:13:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385346902] [2022-11-23 02:13:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:44,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:44,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385346902] [2022-11-23 02:13:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385346902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:44,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:44,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982834782] [2022-11-23 02:13:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:44,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:44,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:44,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:44,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:44,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:44,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:44,889 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-23 02:13:44,889 INFO L131 PetriNetUnfolder]: For 823/823 co-relation queries the response was YES. [2022-11-23 02:13:44,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 303 events. 172/303 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1074 event pairs, 18 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1137. Up to 79 conditions per place. [2022-11-23 02:13:44,892 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2022-11-23 02:13:44,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 520 flow [2022-11-23 02:13:44,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:13:44,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:13:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2022-11-23 02:13:44,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4594155844155844 [2022-11-23 02:13:44,895 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2022-11-23 02:13:44,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2022-11-23 02:13:44,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:44,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2022-11-23 02:13:44,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,900 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,900 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 270 flow. Second operand 8 states and 566 transitions. [2022-11-23 02:13:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 520 flow [2022-11-23 02:13:44,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 496 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-23 02:13:44,907 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 376 flow [2022-11-23 02:13:44,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2022-11-23 02:13:44,908 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 28 predicate places. [2022-11-23 02:13:44,908 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 376 flow [2022-11-23 02:13:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:44,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:44,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:44,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:13:44,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1321511597, now seen corresponding path program 3 times [2022-11-23 02:13:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797816309] [2022-11-23 02:13:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:45,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:45,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797816309] [2022-11-23 02:13:45,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797816309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:13:45,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:13:45,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:13:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777042205] [2022-11-23 02:13:45,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:13:45,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:13:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:45,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:13:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:13:45,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:45,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:45,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:45,238 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2022-11-23 02:13:45,239 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2022-11-23 02:13:45,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 295 events. 168/295 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1055 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1310. Up to 71 conditions per place. [2022-11-23 02:13:45,242 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2022-11-23 02:13:45,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 652 flow [2022-11-23 02:13:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:13:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 02:13:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 565 transitions. [2022-11-23 02:13:45,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4586038961038961 [2022-11-23 02:13:45,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 565 transitions. [2022-11-23 02:13:45,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 565 transitions. [2022-11-23 02:13:45,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:45,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 565 transitions. [2022-11-23 02:13:45,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.625) internal successors, (565), 8 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,250 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 376 flow. Second operand 8 states and 565 transitions. [2022-11-23 02:13:45,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 652 flow [2022-11-23 02:13:45,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 618 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-23 02:13:45,260 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 477 flow [2022-11-23 02:13:45,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2022-11-23 02:13:45,262 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2022-11-23 02:13:45,262 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 477 flow [2022-11-23 02:13:45,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:45,263 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:13:45,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 463646121, now seen corresponding path program 4 times [2022-11-23 02:13:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:45,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863398588] [2022-11-23 02:13:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:45,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863398588] [2022-11-23 02:13:45,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863398588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:45,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693675177] [2022-11-23 02:13:45,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:13:45,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:45,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:45,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:13:45,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:13:45,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:13:45,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:45,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:45,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693675177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:45,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:45,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-23 02:13:45,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958692403] [2022-11-23 02:13:45,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:13:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:13:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:13:45,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:45,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 477 flow. Second operand has 12 states, 12 states have (on average 66.83333333333333) internal successors, (802), 12 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:45,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:45,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:45,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:46,106 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2022-11-23 02:13:46,106 INFO L131 PetriNetUnfolder]: For 2700/2700 co-relation queries the response was YES. [2022-11-23 02:13:46,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 343 events. 192/343 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1226 event pairs, 41 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1673. Up to 181 conditions per place. [2022-11-23 02:13:46,110 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2022-11-23 02:13:46,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 917 flow [2022-11-23 02:13:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:13:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:13:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 845 transitions. [2022-11-23 02:13:46,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45725108225108224 [2022-11-23 02:13:46,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 845 transitions. [2022-11-23 02:13:46,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 845 transitions. [2022-11-23 02:13:46,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:46,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 845 transitions. [2022-11-23 02:13:46,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.41666666666667) internal successors, (845), 12 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:46,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 154.0) internal successors, (2002), 13 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:46,121 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 154.0) internal successors, (2002), 13 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:46,121 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 477 flow. Second operand 12 states and 845 transitions. [2022-11-23 02:13:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 917 flow [2022-11-23 02:13:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 862 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-23 02:13:46,137 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 587 flow [2022-11-23 02:13:46,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=587, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2022-11-23 02:13:46,138 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2022-11-23 02:13:46,138 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 587 flow [2022-11-23 02:13:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.83333333333333) internal successors, (802), 12 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:46,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:46,139 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:46,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:46,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 02:13:46,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 491351751, now seen corresponding path program 5 times [2022-11-23 02:13:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353983872] [2022-11-23 02:13:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353983872] [2022-11-23 02:13:46,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353983872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447144911] [2022-11-23 02:13:46,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:13:46,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:46,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:46,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:46,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:13:46,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:13:46,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:46,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 02:13:46,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:46,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:46,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447144911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:46,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:46,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-23 02:13:46,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930349992] [2022-11-23 02:13:46,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:46,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:13:46,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:46,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:13:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:13:46,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:46,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 587 flow. Second operand has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:46,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:46,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:46,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:47,298 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2022-11-23 02:13:47,298 INFO L131 PetriNetUnfolder]: For 6953/6953 co-relation queries the response was YES. [2022-11-23 02:13:47,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 459 events. 254/459 cut-off events. For 6953/6953 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1807 event pairs, 30 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2588. Up to 131 conditions per place. [2022-11-23 02:13:47,303 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2022-11-23 02:13:47,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1454 flow [2022-11-23 02:13:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:13:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-23 02:13:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1267 transitions. [2022-11-23 02:13:47,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2022-11-23 02:13:47,308 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1267 transitions. [2022-11-23 02:13:47,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1267 transitions. [2022-11-23 02:13:47,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:47,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1267 transitions. [2022-11-23 02:13:47,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.38888888888889) internal successors, (1267), 18 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:47,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:47,317 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:47,317 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 587 flow. Second operand 18 states and 1267 transitions. [2022-11-23 02:13:47,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1454 flow [2022-11-23 02:13:47,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1311 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-23 02:13:47,342 INFO L231 Difference]: Finished difference. Result has 93 places, 66 transitions, 945 flow [2022-11-23 02:13:47,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=945, PETRI_PLACES=93, PETRI_TRANSITIONS=66} [2022-11-23 02:13:47,343 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2022-11-23 02:13:47,343 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 66 transitions, 945 flow [2022-11-23 02:13:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:47,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:47,344 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:47,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:47,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:47,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2119566141, now seen corresponding path program 6 times [2022-11-23 02:13:47,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:47,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370059256] [2022-11-23 02:13:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:47,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:47,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:47,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370059256] [2022-11-23 02:13:47,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370059256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590117881] [2022-11-23 02:13:47,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:13:47,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:47,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:47,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:47,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:13:47,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-23 02:13:47,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:47,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:13:47,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:47,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:47,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590117881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:47,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:47,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:13:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232216142] [2022-11-23 02:13:47,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 02:13:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 02:13:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:13:47,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:48,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 66 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 66.71428571428571) internal successors, (934), 14 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:48,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:48,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:48,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:48,411 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2022-11-23 02:13:48,411 INFO L131 PetriNetUnfolder]: For 15466/15466 co-relation queries the response was YES. [2022-11-23 02:13:48,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 619 events. 338/619 cut-off events. For 15466/15466 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2655 event pairs, 27 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4489. Up to 207 conditions per place. [2022-11-23 02:13:48,419 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2022-11-23 02:13:48,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 135 transitions, 2184 flow [2022-11-23 02:13:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:13:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-23 02:13:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1262 transitions. [2022-11-23 02:13:48,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45526695526695526 [2022-11-23 02:13:48,424 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1262 transitions. [2022-11-23 02:13:48,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1262 transitions. [2022-11-23 02:13:48,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:48,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1262 transitions. [2022-11-23 02:13:48,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.11111111111111) internal successors, (1262), 18 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:48,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:48,433 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:48,433 INFO L175 Difference]: Start difference. First operand has 93 places, 66 transitions, 945 flow. Second operand 18 states and 1262 transitions. [2022-11-23 02:13:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 135 transitions, 2184 flow [2022-11-23 02:13:48,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 1904 flow, removed 130 selfloop flow, removed 4 redundant places. [2022-11-23 02:13:48,484 INFO L231 Difference]: Finished difference. Result has 114 places, 82 transitions, 1312 flow [2022-11-23 02:13:48,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1312, PETRI_PLACES=114, PETRI_TRANSITIONS=82} [2022-11-23 02:13:48,485 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2022-11-23 02:13:48,485 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 82 transitions, 1312 flow [2022-11-23 02:13:48,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.71428571428571) internal successors, (934), 14 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:48,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:48,486 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:48,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 02:13:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:48,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1338440729, now seen corresponding path program 7 times [2022-11-23 02:13:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647937579] [2022-11-23 02:13:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:48,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:48,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647937579] [2022-11-23 02:13:48,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647937579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:48,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560443081] [2022-11-23 02:13:48,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:13:48,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:48,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:48,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:13:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:48,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:13:48,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:48,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:49,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560443081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:49,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:49,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-23 02:13:49,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13469449] [2022-11-23 02:13:49,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:49,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 02:13:49,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:49,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 02:13:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:13:49,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:49,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 82 transitions, 1312 flow. Second operand has 15 states, 15 states have (on average 66.73333333333333) internal successors, (1001), 15 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:49,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:49,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:49,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:49,793 INFO L130 PetriNetUnfolder]: 390/711 cut-off events. [2022-11-23 02:13:49,794 INFO L131 PetriNetUnfolder]: For 27810/27810 co-relation queries the response was YES. [2022-11-23 02:13:49,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 711 events. 390/711 cut-off events. For 27810/27810 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3113 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5857. Up to 238 conditions per place. [2022-11-23 02:13:49,803 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2022-11-23 02:13:49,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 2974 flow [2022-11-23 02:13:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 02:13:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-23 02:13:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1476 transitions. [2022-11-23 02:13:49,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45640074211502785 [2022-11-23 02:13:49,812 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1476 transitions. [2022-11-23 02:13:49,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1476 transitions. [2022-11-23 02:13:49,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:49,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1476 transitions. [2022-11-23 02:13:49,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 70.28571428571429) internal successors, (1476), 21 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:49,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:49,828 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 154.0) internal successors, (3388), 22 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:49,828 INFO L175 Difference]: Start difference. First operand has 114 places, 82 transitions, 1312 flow. Second operand 21 states and 1476 transitions. [2022-11-23 02:13:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 2974 flow [2022-11-23 02:13:49,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 165 transitions, 2402 flow, removed 246 selfloop flow, removed 12 redundant places. [2022-11-23 02:13:49,889 INFO L231 Difference]: Finished difference. Result has 132 places, 101 transitions, 1713 flow [2022-11-23 02:13:49,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1713, PETRI_PLACES=132, PETRI_TRANSITIONS=101} [2022-11-23 02:13:49,891 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2022-11-23 02:13:49,891 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 101 transitions, 1713 flow [2022-11-23 02:13:49,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.73333333333333) internal successors, (1001), 15 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:49,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:49,892 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:49,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:50,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1537350199, now seen corresponding path program 8 times [2022-11-23 02:13:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:50,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765423387] [2022-11-23 02:13:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765423387] [2022-11-23 02:13:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765423387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741632614] [2022-11-23 02:13:50,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:13:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:50,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:50,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:13:50,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:13:50,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:50,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 02:13:50,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:50,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:50,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741632614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:50,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:50,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-11-23 02:13:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343619190] [2022-11-23 02:13:50,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:50,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 02:13:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 02:13:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-11-23 02:13:50,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:50,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 101 transitions, 1713 flow. Second operand has 22 states, 22 states have (on average 66.5) internal successors, (1463), 22 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:50,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:50,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:50,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:51,832 INFO L130 PetriNetUnfolder]: 538/959 cut-off events. [2022-11-23 02:13:51,832 INFO L131 PetriNetUnfolder]: For 42942/42942 co-relation queries the response was YES. [2022-11-23 02:13:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8739 conditions, 959 events. 538/959 cut-off events. For 42942/42942 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4149 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8685. Up to 330 conditions per place. [2022-11-23 02:13:51,845 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2022-11-23 02:13:51,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 247 transitions, 4925 flow [2022-11-23 02:13:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 02:13:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-23 02:13:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2522 transitions. [2022-11-23 02:13:51,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4549062049062049 [2022-11-23 02:13:51,851 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2522 transitions. [2022-11-23 02:13:51,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2522 transitions. [2022-11-23 02:13:51,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:51,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2522 transitions. [2022-11-23 02:13:51,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 70.05555555555556) internal successors, (2522), 36 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:51,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 154.0) internal successors, (5698), 37 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:51,882 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 154.0) internal successors, (5698), 37 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:51,882 INFO L175 Difference]: Start difference. First operand has 132 places, 101 transitions, 1713 flow. Second operand 36 states and 2522 transitions. [2022-11-23 02:13:51,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 247 transitions, 4925 flow [2022-11-23 02:13:51,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 247 transitions, 4318 flow, removed 265 selfloop flow, removed 14 redundant places. [2022-11-23 02:13:51,970 INFO L231 Difference]: Finished difference. Result has 171 places, 138 transitions, 2758 flow [2022-11-23 02:13:51,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2758, PETRI_PLACES=171, PETRI_TRANSITIONS=138} [2022-11-23 02:13:51,971 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2022-11-23 02:13:51,971 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 138 transitions, 2758 flow [2022-11-23 02:13:51,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.5) internal successors, (1463), 22 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:51,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:51,972 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:51,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:52,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:52,178 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1438842523, now seen corresponding path program 9 times [2022-11-23 02:13:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:52,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580655755] [2022-11-23 02:13:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:52,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580655755] [2022-11-23 02:13:52,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580655755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:52,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632827137] [2022-11-23 02:13:52,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:13:52,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:52,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:52,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:52,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:13:52,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 02:13:52,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:52,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:13:52,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:52,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:53,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632827137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:53,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:53,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-11-23 02:13:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719716683] [2022-11-23 02:13:53,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 02:13:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 02:13:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:13:53,358 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:53,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 138 transitions, 2758 flow. Second operand has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:53,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:53,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:54,457 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2022-11-23 02:13:54,457 INFO L131 PetriNetUnfolder]: For 90437/90437 co-relation queries the response was YES. [2022-11-23 02:13:54,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 1231 events. 674/1231 cut-off events. For 90437/90437 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5596 event pairs, 101 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13930. Up to 466 conditions per place. [2022-11-23 02:13:54,476 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2022-11-23 02:13:54,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 284 transitions, 6989 flow [2022-11-23 02:13:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 02:13:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-23 02:13:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2641 transitions. [2022-11-23 02:13:54,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2022-11-23 02:13:54,482 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2641 transitions. [2022-11-23 02:13:54,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2641 transitions. [2022-11-23 02:13:54,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:54,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2641 transitions. [2022-11-23 02:13:54,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 69.5) internal successors, (2641), 38 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:54,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 154.0) internal successors, (6006), 39 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:54,499 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 154.0) internal successors, (6006), 39 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:54,500 INFO L175 Difference]: Start difference. First operand has 171 places, 138 transitions, 2758 flow. Second operand 38 states and 2641 transitions. [2022-11-23 02:13:54,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 284 transitions, 6989 flow [2022-11-23 02:13:54,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 284 transitions, 5398 flow, removed 763 selfloop flow, removed 13 redundant places. [2022-11-23 02:13:54,769 INFO L231 Difference]: Finished difference. Result has 203 places, 172 transitions, 3028 flow [2022-11-23 02:13:54,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3028, PETRI_PLACES=203, PETRI_TRANSITIONS=172} [2022-11-23 02:13:54,770 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2022-11-23 02:13:54,770 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 172 transitions, 3028 flow [2022-11-23 02:13:54,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:54,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:54,772 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:54,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:54,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:13:54,977 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1480281403, now seen corresponding path program 10 times [2022-11-23 02:13:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:54,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518487856] [2022-11-23 02:13:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:55,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:55,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518487856] [2022-11-23 02:13:55,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518487856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:55,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461434174] [2022-11-23 02:13:55,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:13:55,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:55,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:55,326 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:55,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 02:13:55,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:13:55,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:55,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:13:55,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:55,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:55,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461434174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:55,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:55,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-11-23 02:13:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937478824] [2022-11-23 02:13:55,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 02:13:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 02:13:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 02:13:56,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:56,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 172 transitions, 3028 flow. Second operand has 35 states, 35 states have (on average 66.34285714285714) internal successors, (2322), 35 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:56,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:56,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:56,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:13:57,904 INFO L130 PetriNetUnfolder]: 858/1595 cut-off events. [2022-11-23 02:13:57,905 INFO L131 PetriNetUnfolder]: For 147748/147748 co-relation queries the response was YES. [2022-11-23 02:13:57,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17910 conditions, 1595 events. 858/1595 cut-off events. For 147748/147748 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7836 event pairs, 42 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17838. Up to 646 conditions per place. [2022-11-23 02:13:57,941 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2022-11-23 02:13:57,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 351 transitions, 7743 flow [2022-11-23 02:13:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 02:13:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-23 02:13:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3066 transitions. [2022-11-23 02:13:57,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2022-11-23 02:13:57,952 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3066 transitions. [2022-11-23 02:13:57,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3066 transitions. [2022-11-23 02:13:57,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:13:57,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3066 transitions. [2022-11-23 02:13:57,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 69.68181818181819) internal successors, (3066), 44 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:57,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:57,973 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:57,974 INFO L175 Difference]: Start difference. First operand has 203 places, 172 transitions, 3028 flow. Second operand 44 states and 3066 transitions. [2022-11-23 02:13:57,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 351 transitions, 7743 flow [2022-11-23 02:13:58,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 351 transitions, 7094 flow, removed 257 selfloop flow, removed 17 redundant places. [2022-11-23 02:13:58,409 INFO L231 Difference]: Finished difference. Result has 240 places, 221 transitions, 4323 flow [2022-11-23 02:13:58,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4323, PETRI_PLACES=240, PETRI_TRANSITIONS=221} [2022-11-23 02:13:58,410 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2022-11-23 02:13:58,410 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 221 transitions, 4323 flow [2022-11-23 02:13:58,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 66.34285714285714) internal successors, (2322), 35 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:58,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:13:58,411 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:13:58,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:13:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:13:58,620 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:13:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:13:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1291827605, now seen corresponding path program 11 times [2022-11-23 02:13:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:13:58,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674291568] [2022-11-23 02:13:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:13:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:13:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:13:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:13:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674291568] [2022-11-23 02:13:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674291568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:13:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997420879] [2022-11-23 02:13:58,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:13:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:13:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:13:58,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:13:58,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 02:13:59,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-23 02:13:59,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:13:59,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:13:59,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:13:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:59,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:13:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:13:59,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997420879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:13:59,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:13:59,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-11-23 02:13:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060581170] [2022-11-23 02:13:59,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:13:59,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 02:13:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:13:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 02:13:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:13:59,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:13:59,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 221 transitions, 4323 flow. Second operand has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:13:59,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:13:59,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:13:59,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:01,305 INFO L130 PetriNetUnfolder]: 1038/1931 cut-off events. [2022-11-23 02:14:01,306 INFO L131 PetriNetUnfolder]: For 252679/252679 co-relation queries the response was YES. [2022-11-23 02:14:01,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24732 conditions, 1931 events. 1038/1931 cut-off events. For 252679/252679 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9853 event pairs, 30 based on Foata normal form. 32/1963 useless extension candidates. Maximal degree in co-relation 24648. Up to 802 conditions per place. [2022-11-23 02:14:01,347 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 91 selfloop transitions, 229 changer transitions 63/383 dead transitions. [2022-11-23 02:14:01,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 383 transitions, 9403 flow [2022-11-23 02:14:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-23 02:14:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-23 02:14:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2929 transitions. [2022-11-23 02:14:01,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4528447742733457 [2022-11-23 02:14:01,356 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2929 transitions. [2022-11-23 02:14:01,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2929 transitions. [2022-11-23 02:14:01,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:01,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2929 transitions. [2022-11-23 02:14:01,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 69.73809523809524) internal successors, (2929), 42 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:01,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 154.0) internal successors, (6622), 43 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:01,376 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 154.0) internal successors, (6622), 43 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:01,376 INFO L175 Difference]: Start difference. First operand has 240 places, 221 transitions, 4323 flow. Second operand 42 states and 2929 transitions. [2022-11-23 02:14:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 383 transitions, 9403 flow [2022-11-23 02:14:01,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 383 transitions, 8481 flow, removed 371 selfloop flow, removed 18 redundant places. [2022-11-23 02:14:01,977 INFO L231 Difference]: Finished difference. Result has 277 places, 260 transitions, 5335 flow [2022-11-23 02:14:01,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5335, PETRI_PLACES=277, PETRI_TRANSITIONS=260} [2022-11-23 02:14:01,978 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 253 predicate places. [2022-11-23 02:14:01,978 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 260 transitions, 5335 flow [2022-11-23 02:14:01,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:01,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:01,980 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:01,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:02,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:14:02,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:02,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:02,191 INFO L85 PathProgramCache]: Analyzing trace with hash 436584311, now seen corresponding path program 12 times [2022-11-23 02:14:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:14:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536348396] [2022-11-23 02:14:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:14:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:14:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536348396] [2022-11-23 02:14:02,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536348396] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:14:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052770935] [2022-11-23 02:14:02,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:14:02,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:14:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:14:02,482 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:14:02,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 02:14:02,593 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-23 02:14:02,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:02,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 02:14:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:02,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:02,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052770935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:02,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:14:02,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-11-23 02:14:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706026403] [2022-11-23 02:14:02,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 02:14:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:14:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 02:14:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:14:03,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:14:03,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 260 transitions, 5335 flow. Second operand has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:03,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:03,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:14:03,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:05,038 INFO L130 PetriNetUnfolder]: 1066/1975 cut-off events. [2022-11-23 02:14:05,039 INFO L131 PetriNetUnfolder]: For 345935/345935 co-relation queries the response was YES. [2022-11-23 02:14:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27587 conditions, 1975 events. 1066/1975 cut-off events. For 345935/345935 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10127 event pairs, 12 based on Foata normal form. 28/2003 useless extension candidates. Maximal degree in co-relation 27488. Up to 806 conditions per place. [2022-11-23 02:14:05,083 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 70 selfloop transitions, 253 changer transitions 78/401 dead transitions. [2022-11-23 02:14:05,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 401 transitions, 10467 flow [2022-11-23 02:14:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-23 02:14:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-23 02:14:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2936 transitions. [2022-11-23 02:14:05,090 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45392702535559676 [2022-11-23 02:14:05,091 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2936 transitions. [2022-11-23 02:14:05,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2936 transitions. [2022-11-23 02:14:05,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:05,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2936 transitions. [2022-11-23 02:14:05,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 69.9047619047619) internal successors, (2936), 42 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:05,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 154.0) internal successors, (6622), 43 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:05,110 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 154.0) internal successors, (6622), 43 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:05,110 INFO L175 Difference]: Start difference. First operand has 277 places, 260 transitions, 5335 flow. Second operand 42 states and 2936 transitions. [2022-11-23 02:14:05,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 401 transitions, 10467 flow [2022-11-23 02:14:05,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 401 transitions, 9281 flow, removed 481 selfloop flow, removed 20 redundant places. [2022-11-23 02:14:05,908 INFO L231 Difference]: Finished difference. Result has 309 places, 275 transitions, 5846 flow [2022-11-23 02:14:05,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5846, PETRI_PLACES=309, PETRI_TRANSITIONS=275} [2022-11-23 02:14:05,909 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 285 predicate places. [2022-11-23 02:14:05,909 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 275 transitions, 5846 flow [2022-11-23 02:14:05,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 66.32352941176471) internal successors, (2255), 34 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:05,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:05,910 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:05,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:14:06,117 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash -608117333, now seen corresponding path program 13 times [2022-11-23 02:14:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:14:06,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980828562] [2022-11-23 02:14:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:06,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:14:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:14:06,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980828562] [2022-11-23 02:14:06,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980828562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:14:06,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444555070] [2022-11-23 02:14:06,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:14:06,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:14:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:14:06,510 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:14:06,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 02:14:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:06,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 02:14:06,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:06,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:06,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444555070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:06,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:14:06,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2022-11-23 02:14:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105024746] [2022-11-23 02:14:06,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:06,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 02:14:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:14:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 02:14:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-11-23 02:14:07,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 02:14:07,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 275 transitions, 5846 flow. Second operand has 28 states, 28 states have (on average 66.42857142857143) internal successors, (1860), 28 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:07,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:07,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 02:14:07,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:09,273 INFO L130 PetriNetUnfolder]: 1166/2151 cut-off events. [2022-11-23 02:14:09,273 INFO L131 PetriNetUnfolder]: For 437256/437256 co-relation queries the response was YES. [2022-11-23 02:14:09,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32231 conditions, 2151 events. 1166/2151 cut-off events. For 437256/437256 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11012 event pairs, 15 based on Foata normal form. 20/2171 useless extension candidates. Maximal degree in co-relation 32122. Up to 866 conditions per place. [2022-11-23 02:14:09,320 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 80 selfloop transitions, 278 changer transitions 90/448 dead transitions. [2022-11-23 02:14:09,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 448 transitions, 12473 flow [2022-11-23 02:14:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 02:14:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-23 02:14:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3352 transitions. [2022-11-23 02:14:09,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45346320346320346 [2022-11-23 02:14:09,328 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3352 transitions. [2022-11-23 02:14:09,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3352 transitions. [2022-11-23 02:14:09,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:09,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3352 transitions. [2022-11-23 02:14:09,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 69.83333333333333) internal successors, (3352), 48 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:09,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 154.0) internal successors, (7546), 49 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:09,348 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 154.0) internal successors, (7546), 49 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:09,348 INFO L175 Difference]: Start difference. First operand has 309 places, 275 transitions, 5846 flow. Second operand 48 states and 3352 transitions. [2022-11-23 02:14:09,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 448 transitions, 12473 flow [2022-11-23 02:14:10,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 448 transitions, 10660 flow, removed 711 selfloop flow, removed 33 redundant places. [2022-11-23 02:14:10,549 INFO L231 Difference]: Finished difference. Result has 333 places, 300 transitions, 6501 flow [2022-11-23 02:14:10,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6501, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-11-23 02:14:10,550 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 309 predicate places. [2022-11-23 02:14:10,550 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 6501 flow [2022-11-23 02:14:10,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 66.42857142857143) internal successors, (1860), 28 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:10,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:10,551 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:10,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:10,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:14:10,751 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1929634669, now seen corresponding path program 14 times [2022-11-23 02:14:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:14:10,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108706478] [2022-11-23 02:14:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:14:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:14:10,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:14:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:14:10,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:14:10,836 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:14:10,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-11-23 02:14:10,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-23 02:14:10,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-23 02:14:10,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-23 02:14:10,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-23 02:14:10,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-23 02:14:10,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-23 02:14:10,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-23 02:14:10,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 02:14:10,841 INFO L444 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1] [2022-11-23 02:14:10,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:14:10,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:14:10,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:14:10 BasicIcfg [2022-11-23 02:14:10,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:14:10,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:14:10,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:14:10,931 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:14:10,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:38" (3/4) ... [2022-11-23 02:14:10,935 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 02:14:10,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:14:10,935 INFO L158 Benchmark]: Toolchain (without parser) took 33547.29ms. Allocated memory was 159.4MB in the beginning and 591.4MB in the end (delta: 432.0MB). Free memory was 111.6MB in the beginning and 343.2MB in the end (delta: -231.6MB). Peak memory consumption was 202.5MB. Max. memory is 16.1GB. [2022-11-23 02:14:10,936 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory was 127.2MB in the beginning and 127.0MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:14:10,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 637.05ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 91.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:14:10,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.45ms. Allocated memory is still 159.4MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:14:10,937 INFO L158 Benchmark]: Boogie Preprocessor took 27.95ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 88.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:14:10,937 INFO L158 Benchmark]: RCFGBuilder took 470.22ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 74.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 02:14:10,937 INFO L158 Benchmark]: TraceAbstraction took 32346.61ms. Allocated memory was 159.4MB in the beginning and 591.4MB in the end (delta: 432.0MB). Free memory was 74.2MB in the beginning and 343.2MB in the end (delta: -269.0MB). Peak memory consumption was 164.7MB. Max. memory is 16.1GB. [2022-11-23 02:14:10,938 INFO L158 Benchmark]: Witness Printer took 3.99ms. Allocated memory is still 591.4MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:14:10,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 159.4MB. Free memory was 127.2MB in the beginning and 127.0MB in the end (delta: 141.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 637.05ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 91.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.45ms. Allocated memory is still 159.4MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.95ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 88.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 470.22ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 74.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 32346.61ms. Allocated memory was 159.4MB in the beginning and 591.4MB in the end (delta: 432.0MB). Free memory was 74.2MB in the beginning and 343.2MB in the end (delta: -269.0MB). Peak memory consumption was 164.7MB. Max. memory is 16.1GB. * Witness Printer took 3.99ms. Allocated memory is still 591.4MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 78 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 20 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 979, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 830, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 830, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 979, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 830, unknown conditional: 0, unknown unconditional: 830] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [#in~arg={0:0}, #in~argv={51:50}, argc=49, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6, unknown-#in~argc-unknown=49] [L696] 1 int k = 0; VAL [#in~arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, argc=49, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7, unknown-#in~argc-unknown=49] [L704] 2 int k = 0; VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*10 +6); VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=1, k=0, unknown-#in~argc-unknown=49] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=7, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, condI=0, condJ=1, i=25, id1={3:0}, id2={5:0}, j=26, k=10, k=10, unknown-#in~argc-unknown=49] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 8 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: 32.1s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 18.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4873 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4700 mSDsluCounter, 585 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 555 mSDsCounter, 591 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4261 IncrementalHoareTripleChecker+Invalid, 4852 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 591 mSolverCounterUnsat, 30 mSDtfsCounter, 4261 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 762 GetRequests, 204 SyntacticMatches, 23 SemanticMatches, 535 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8706 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6501occurred in iteration=20, InterpolantAutomatonStates: 369, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 2439 SizeOfPredicates, 96 NumberOfNonLiveVariables, 1630 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 0/774 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 02:14:10,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS --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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- 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-4e7fbc6 [2022-11-23 02:14:13,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:14:13,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:14:13,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:14:13,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:14:13,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:14:13,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:14:13,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:14:13,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:14:13,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:14:13,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:14:13,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:14:13,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:14:13,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:14:13,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:14:13,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:14:13,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:14:13,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:14:13,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:14:13,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:14:13,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:14:13,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:14:13,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:14:13,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:14:13,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:14:13,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:14:13,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:14:13,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:14:13,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:14:13,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:14:13,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:14:13,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:14:13,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:14:13,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:14:13,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:14:13,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:14:13,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:14:13,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:14:13,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:14:13,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:14:13,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:14:13,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-23 02:14:13,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:14:13,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:14:13,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:14:13,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:14:13,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:14:13,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:14:13,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:14:13,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:14:13,525 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:14:13,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:14:13,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:14:13,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:14:13,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:14:13,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:14:13,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:14:13,528 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:14:13,529 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:14:13,529 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:14:13,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:14:13,529 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:14:13,530 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 02:14:13,530 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 02:14:13,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:14:13,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:14:13,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:14:13,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:14:13,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:14:13,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:14:13,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:14:13,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:14:13,532 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 02:14:13,532 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 02:14:13,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:14:13,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:14:13,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:14:13,534 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 02:14:13,534 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_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2022-11-23 02:14:13,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:14:13,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:14:13,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:14:13,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:14:13,971 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:14:13,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-23 02:14:17,218 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:14:17,517 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:14:17,518 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i [2022-11-23 02:14:17,537 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/ca17665d9/aa2d6ed3b4c34b3baa3da10b55cda272/FLAGedb7003e7 [2022-11-23 02:14:17,562 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/data/ca17665d9/aa2d6ed3b4c34b3baa3da10b55cda272 [2022-11-23 02:14:17,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:14:17,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:14:17,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:14:17,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:14:17,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:14:17,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:17" (1/1) ... [2022-11-23 02:14:17,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9349eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:17, skipping insertion in model container [2022-11-23 02:14:17,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:17" (1/1) ... [2022-11-23 02:14:17,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:14:17,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:14:18,098 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_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-23 02:14:18,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:14:18,124 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:14:18,195 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_56ae4913-92a5-4750-9338-572e9426b2b8/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-11-23 02:14:18,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:14:18,245 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:14:18,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18 WrapperNode [2022-11-23 02:14:18,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:14:18,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:14:18,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:14:18,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:14:18,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,312 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2022-11-23 02:14:18,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:14:18,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:14:18,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:14:18,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:14:18,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:14:18,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:14:18,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:14:18,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:14:18,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (1/1) ... [2022-11-23 02:14:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:14:18,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:14:18,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:14:18,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:14:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 02:14:18,493 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 02:14:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 02:14:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 02:14:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 02:14:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:14:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:14:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:14:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 02:14:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 02:14:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 02:14:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:14:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:14:18,497 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:14:18,677 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:14:18,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:14:18,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:14:18,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:14:18,919 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 02:14:18,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:18 BoogieIcfgContainer [2022-11-23 02:14:18,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:14:18,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:14:18,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:14:18,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:14:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:17" (1/3) ... [2022-11-23 02:14:18,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9bf7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:18, skipping insertion in model container [2022-11-23 02:14:18,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:18" (2/3) ... [2022-11-23 02:14:18,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9bf7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:18, skipping insertion in model container [2022-11-23 02:14:18,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:18" (3/3) ... [2022-11-23 02:14:18,931 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2022-11-23 02:14:18,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:14:18,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 02:14:18,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:14:19,032 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 02:14:19,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2022-11-23 02:14:19,143 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-23 02:14:19,143 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:14:19,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 02:14:19,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 168 flow [2022-11-23 02:14:19,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 160 flow [2022-11-23 02:14:19,157 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:14:19,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 160 flow [2022-11-23 02:14:19,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 160 flow [2022-11-23 02:14:19,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 160 flow [2022-11-23 02:14:19,211 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-23 02:14:19,211 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:14:19,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 02:14:19,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-11-23 02:14:27,708 INFO L134 LiptonReduction]: Checked pairs total: 1189 [2022-11-23 02:14:27,709 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-23 02:14:27,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:14:27,734 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;@12a5a5b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:14:27,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 02:14:27,737 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 02:14:27,740 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:14:27,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:27,741 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 02:14:27,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 314, now seen corresponding path program 1 times [2022-11-23 02:14:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000016490] [2022-11-23 02:14:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:27,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:27,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:27,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 02:14:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 02:14:27,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:27,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:27,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:27,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000016490] [2022-11-23 02:14:27,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000016490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:27,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:27,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 02:14:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080767529] [2022-11-23 02:14:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:27,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:14:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:14:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 02:14:27,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 160 [2022-11-23 02:14:27,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:27,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:27,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 160 [2022-11-23 02:14:27,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:27,993 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2022-11-23 02:14:27,994 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:14:27,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2022-11-23 02:14:27,997 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-23 02:14:27,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-11-23 02:14:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:14:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 02:14:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2022-11-23 02:14:28,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51875 [2022-11-23 02:14:28,011 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 166 transitions. [2022-11-23 02:14:28,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 166 transitions. [2022-11-23 02:14:28,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:28,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 166 transitions. [2022-11-23 02:14:28,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,023 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,025 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 166 transitions. [2022-11-23 02:14:28,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-11-23 02:14:28,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:14:28,029 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2022-11-23 02:14:28,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-11-23 02:14:28,035 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 02:14:28,035 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2022-11-23 02:14:28,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:28,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:14:28,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:28,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:28,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash 310268, now seen corresponding path program 1 times [2022-11-23 02:14:28,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:28,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602022887] [2022-11-23 02:14:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:28,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:28,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:28,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 02:14:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:28,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:14:28,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:28,444 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 02:14:28,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-23 02:14:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:28,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:28,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602022887] [2022-11-23 02:14:28,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602022887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:28,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:28,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:14:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223427625] [2022-11-23 02:14:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:28,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:14:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:14:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:14:28,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 160 [2022-11-23 02:14:28,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:28,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 160 [2022-11-23 02:14:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:28,665 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2022-11-23 02:14:28,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:14:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 350 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2022-11-23 02:14:28,668 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-23 02:14:28,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2022-11-23 02:14:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:14:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:14:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-11-23 02:14:28,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336 [2022-11-23 02:14:28,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-11-23 02:14:28,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-11-23 02:14:28,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:28,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-11-23 02:14:28,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,679 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 229 transitions. [2022-11-23 02:14:28,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2022-11-23 02:14:28,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:14:28,680 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2022-11-23 02:14:28,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-23 02:14:28,681 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 02:14:28,682 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2022-11-23 02:14:28,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:28,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:28,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:14:28,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:28,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:28,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 310269, now seen corresponding path program 1 times [2022-11-23 02:14:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135881502] [2022-11-23 02:14:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:28,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:28,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:28,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:28,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 02:14:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:28,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:14:28,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:28,997 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 02:14:28,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-23 02:14:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:29,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:29,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:29,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135881502] [2022-11-23 02:14:29,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135881502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:29,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:29,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:14:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940350167] [2022-11-23 02:14:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:14:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:14:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:14:29,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:29,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:29,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:29,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:29,148 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2022-11-23 02:14:29,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:14:29,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 333 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2022-11-23 02:14:29,150 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-11-23 02:14:29,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2022-11-23 02:14:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:14:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:14:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-23 02:14:29,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45625 [2022-11-23 02:14:29,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-23 02:14:29,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-23 02:14:29,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:29,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-23 02:14:29,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,159 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 219 transitions. [2022-11-23 02:14:29,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2022-11-23 02:14:29,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:14:29,160 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-11-23 02:14:29,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-11-23 02:14:29,161 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2022-11-23 02:14:29,161 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-11-23 02:14:29,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:29,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:14:29,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:29,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 653520788, now seen corresponding path program 1 times [2022-11-23 02:14:29,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573105055] [2022-11-23 02:14:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:29,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:29,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:29,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 02:14:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:29,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:14:29,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:29,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:29,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:29,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573105055] [2022-11-23 02:14:29,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573105055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:29,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:29,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:14:29,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017769561] [2022-11-23 02:14:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:14:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:29,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:14:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:14:29,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 160 [2022-11-23 02:14:29,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:29,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 160 [2022-11-23 02:14:29,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:29,801 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2022-11-23 02:14:29,801 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-23 02:14:29,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 884 event pairs, 14 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2022-11-23 02:14:29,804 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2022-11-23 02:14:29,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2022-11-23 02:14:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:14:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:14:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2022-11-23 02:14:29,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46875 [2022-11-23 02:14:29,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2022-11-23 02:14:29,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2022-11-23 02:14:29,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:29,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2022-11-23 02:14:29,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,815 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 375 transitions. [2022-11-23 02:14:29,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2022-11-23 02:14:29,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:14:29,817 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2022-11-23 02:14:29,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-11-23 02:14:29,818 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-11-23 02:14:29,819 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2022-11-23 02:14:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:29,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:29,819 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:29,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:30,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1215691206, now seen corresponding path program 1 times [2022-11-23 02:14:30,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:30,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528350000] [2022-11-23 02:14:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:30,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:30,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 02:14:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 02:14:30,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:30,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:30,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528350000] [2022-11-23 02:14:30,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528350000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:30,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:14:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562758895] [2022-11-23 02:14:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:14:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:14:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:14:32,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 02:14:32,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 160 [2022-11-23 02:14:32,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:32,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:32,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 160 [2022-11-23 02:14:32,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:33,064 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2022-11-23 02:14:33,064 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-23 02:14:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 640 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2022-11-23 02:14:33,066 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2022-11-23 02:14:33,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2022-11-23 02:14:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:14:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 02:14:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2022-11-23 02:14:33,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39375 [2022-11-23 02:14:33,069 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 252 transitions. [2022-11-23 02:14:33,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 252 transitions. [2022-11-23 02:14:33,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:33,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 252 transitions. [2022-11-23 02:14:33,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,073 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 252 transitions. [2022-11-23 02:14:33,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2022-11-23 02:14:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:14:33,075 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2022-11-23 02:14:33,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-11-23 02:14:33,076 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-11-23 02:14:33,076 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2022-11-23 02:14:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:33,077 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:33,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:33,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash 978233959, now seen corresponding path program 1 times [2022-11-23 02:14:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:33,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108606202] [2022-11-23 02:14:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:33,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:33,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 02:14:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:14:33,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:33,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:33,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:33,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108606202] [2022-11-23 02:14:33,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108606202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:33,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:33,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:14:33,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870609235] [2022-11-23 02:14:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:14:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:14:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:14:33,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:33,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:33,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:33,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:33,656 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2022-11-23 02:14:33,657 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-23 02:14:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 442 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2022-11-23 02:14:33,659 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2022-11-23 02:14:33,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2022-11-23 02:14:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:14:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 02:14:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-11-23 02:14:33,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4525 [2022-11-23 02:14:33,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-11-23 02:14:33,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-11-23 02:14:33,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:33,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-11-23 02:14:33,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,668 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 362 transitions. [2022-11-23 02:14:33,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2022-11-23 02:14:33,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:14:33,671 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2022-11-23 02:14:33,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2022-11-23 02:14:33,674 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2022-11-23 02:14:33,674 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2022-11-23 02:14:33,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:33,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:33,675 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:33,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:33,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:33,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash 968224183, now seen corresponding path program 1 times [2022-11-23 02:14:33,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:33,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765781829] [2022-11-23 02:14:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:33,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:33,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 02:14:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:33,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:14:33,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:34,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:34,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765781829] [2022-11-23 02:14:34,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765781829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:34,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:34,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:14:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459335710] [2022-11-23 02:14:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:14:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:14:34,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:14:34,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:34,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:34,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:34,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:34,211 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2022-11-23 02:14:34,212 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-11-23 02:14:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2022-11-23 02:14:34,215 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2022-11-23 02:14:34,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2022-11-23 02:14:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:14:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:14:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2022-11-23 02:14:34,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45208333333333334 [2022-11-23 02:14:34,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 434 transitions. [2022-11-23 02:14:34,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 434 transitions. [2022-11-23 02:14:34,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:34,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 434 transitions. [2022-11-23 02:14:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,222 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,222 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 434 transitions. [2022-11-23 02:14:34,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2022-11-23 02:14:34,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 02:14:34,231 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2022-11-23 02:14:34,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-11-23 02:14:34,232 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2022-11-23 02:14:34,232 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2022-11-23 02:14:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:34,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:34,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:34,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:34,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 967388113, now seen corresponding path program 2 times [2022-11-23 02:14:34,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:34,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573687787] [2022-11-23 02:14:34,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:14:34,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:34,450 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:34,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 02:14:34,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:14:34,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:34,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:14:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:34,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:34,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:34,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573687787] [2022-11-23 02:14:34,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573687787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:34,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:34,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:14:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380576208] [2022-11-23 02:14:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:34,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:14:34,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:14:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:14:34,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:34,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:34,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:34,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:34,820 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2022-11-23 02:14:34,822 INFO L131 PetriNetUnfolder]: For 509/509 co-relation queries the response was YES. [2022-11-23 02:14:34,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 697 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2022-11-23 02:14:34,825 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2022-11-23 02:14:34,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2022-11-23 02:14:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:14:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:14:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2022-11-23 02:14:34,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4510416666666667 [2022-11-23 02:14:34,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2022-11-23 02:14:34,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2022-11-23 02:14:34,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:34,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2022-11-23 02:14:34,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,833 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 433 transitions. [2022-11-23 02:14:34,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2022-11-23 02:14:34,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-11-23 02:14:34,839 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2022-11-23 02:14:34,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2022-11-23 02:14:34,842 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2022-11-23 02:14:34,842 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2022-11-23 02:14:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:34,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:34,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:34,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:35,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:35,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -572200984, now seen corresponding path program 1 times [2022-11-23 02:14:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:35,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359829158] [2022-11-23 02:14:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:14:35,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:35,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:35,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:35,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 02:14:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:14:35,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:35,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:35,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:35,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359829158] [2022-11-23 02:14:35,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359829158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:35,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:35,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:14:35,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643976175] [2022-11-23 02:14:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:35,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:14:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:14:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:14:35,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:35,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:35,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:35,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:35,548 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-23 02:14:35,549 INFO L131 PetriNetUnfolder]: For 1075/1075 co-relation queries the response was YES. [2022-11-23 02:14:35,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1070 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2022-11-23 02:14:35,552 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2022-11-23 02:14:35,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2022-11-23 02:14:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:14:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 02:14:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2022-11-23 02:14:35,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4486111111111111 [2022-11-23 02:14:35,555 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2022-11-23 02:14:35,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2022-11-23 02:14:35,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:35,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2022-11-23 02:14:35,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,561 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,561 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 646 transitions. [2022-11-23 02:14:35,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2022-11-23 02:14:35,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-23 02:14:35,566 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2022-11-23 02:14:35,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2022-11-23 02:14:35,567 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2022-11-23 02:14:35,567 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2022-11-23 02:14:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:35,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:35,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:35,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:35,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:35,780 INFO L85 PathProgramCache]: Analyzing trace with hash -572172154, now seen corresponding path program 2 times [2022-11-23 02:14:35,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:35,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310885954] [2022-11-23 02:14:35,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:14:35,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:35,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:35,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 02:14:35,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:14:35,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:14:35,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:35,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:35,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:35,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310885954] [2022-11-23 02:14:35,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310885954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:35,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:35,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:14:35,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881781731] [2022-11-23 02:14:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:35,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:14:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:14:35,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:14:35,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:35,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:35,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:35,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:35,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:36,202 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2022-11-23 02:14:36,202 INFO L131 PetriNetUnfolder]: For 1675/1675 co-relation queries the response was YES. [2022-11-23 02:14:36,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1070 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2022-11-23 02:14:36,205 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2022-11-23 02:14:36,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2022-11-23 02:14:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:14:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:14:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-11-23 02:14:36,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-11-23 02:14:36,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:36,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,213 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 504 transitions. [2022-11-23 02:14:36,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2022-11-23 02:14:36,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-11-23 02:14:36,223 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2022-11-23 02:14:36,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2022-11-23 02:14:36,224 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2022-11-23 02:14:36,225 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2022-11-23 02:14:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:36,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:36,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:36,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash -546340474, now seen corresponding path program 3 times [2022-11-23 02:14:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:36,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104841040] [2022-11-23 02:14:36,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:14:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:36,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:36,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-23 02:14:36,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 02:14:36,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:36,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:14:36,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:36,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:36,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104841040] [2022-11-23 02:14:36,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104841040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:36,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:36,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:14:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529468125] [2022-11-23 02:14:36,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:36,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:14:36,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:14:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:14:36,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:36,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:36,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:36,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:36,937 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2022-11-23 02:14:36,937 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-11-23 02:14:36,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1102 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2022-11-23 02:14:36,940 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2022-11-23 02:14:36,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2022-11-23 02:14:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:14:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:14:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-11-23 02:14:36,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-11-23 02:14:36,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:36,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-11-23 02:14:36,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,949 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,949 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 504 transitions. [2022-11-23 02:14:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2022-11-23 02:14:36,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-23 02:14:36,958 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2022-11-23 02:14:36,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-11-23 02:14:36,959 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2022-11-23 02:14:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2022-11-23 02:14:36,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:36,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:36,960 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:36,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:37,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -572229814, now seen corresponding path program 4 times [2022-11-23 02:14:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75139242] [2022-11-23 02:14:37,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:14:37,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:37,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:37,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-23 02:14:37,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:14:37,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:37,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:14:37,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:37,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:14:37,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75139242] [2022-11-23 02:14:37,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75139242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:14:37,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:14:37,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:14:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213098161] [2022-11-23 02:14:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:14:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:14:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:14:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:14:37,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:37,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:37,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:37,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:37,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:37,626 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2022-11-23 02:14:37,627 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2022-11-23 02:14:37,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1190 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2022-11-23 02:14:37,629 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2022-11-23 02:14:37,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2022-11-23 02:14:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:14:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 02:14:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2022-11-23 02:14:37,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44910714285714287 [2022-11-23 02:14:37,632 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2022-11-23 02:14:37,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2022-11-23 02:14:37,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:37,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2022-11-23 02:14:37,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:37,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:37,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:37,636 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 503 transitions. [2022-11-23 02:14:37,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2022-11-23 02:14:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 02:14:37,647 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2022-11-23 02:14:37,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2022-11-23 02:14:37,648 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2022-11-23 02:14:37,648 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2022-11-23 02:14:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:37,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:37,649 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:37,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:37,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:37,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash -557435877, now seen corresponding path program 5 times [2022-11-23 02:14:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:37,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933560621] [2022-11-23 02:14:37,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:14:37,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:37,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:37,863 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:37,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-23 02:14:37,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:14:37,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:37,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:14:37,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:38,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:38,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:38,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933560621] [2022-11-23 02:14:38,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933560621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:38,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:38,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 02:14:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857818846] [2022-11-23 02:14:38,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:14:38,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:14:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:14:38,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:38,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:38,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:38,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:38,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:39,368 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2022-11-23 02:14:39,368 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2022-11-23 02:14:39,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1542 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2022-11-23 02:14:39,371 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2022-11-23 02:14:39,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2022-11-23 02:14:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:14:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:14:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-11-23 02:14:39,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.446484375 [2022-11-23 02:14:39,376 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-11-23 02:14:39,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-11-23 02:14:39,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:39,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-11-23 02:14:39,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:39,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:39,385 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:39,385 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1143 transitions. [2022-11-23 02:14:39,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2022-11-23 02:14:39,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-23 02:14:39,411 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2022-11-23 02:14:39,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2022-11-23 02:14:39,413 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2022-11-23 02:14:39,413 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2022-11-23 02:14:39,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:39,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:39,414 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:39,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:39,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:39,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash -587911109, now seen corresponding path program 6 times [2022-11-23 02:14:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:39,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598270018] [2022-11-23 02:14:39,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:14:39,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:39,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:39,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-23 02:14:39,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-23 02:14:39,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:39,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:14:39,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:39,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:40,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:40,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598270018] [2022-11-23 02:14:40,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598270018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:40,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:40,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 02:14:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440754267] [2022-11-23 02:14:40,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:40,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:14:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:14:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:14:40,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:40,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:40,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:40,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:40,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:40,819 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2022-11-23 02:14:40,819 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2022-11-23 02:14:40,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1709 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2022-11-23 02:14:40,823 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2022-11-23 02:14:40,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2022-11-23 02:14:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:14:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:14:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 857 transitions. [2022-11-23 02:14:40,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44635416666666666 [2022-11-23 02:14:40,827 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 857 transitions. [2022-11-23 02:14:40,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 857 transitions. [2022-11-23 02:14:40,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:40,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 857 transitions. [2022-11-23 02:14:40,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.41666666666667) internal successors, (857), 12 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:40,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:40,834 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:40,834 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 857 transitions. [2022-11-23 02:14:40,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2022-11-23 02:14:40,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2022-11-23 02:14:40,860 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2022-11-23 02:14:40,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2022-11-23 02:14:40,861 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2022-11-23 02:14:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2022-11-23 02:14:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:40,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:40,862 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:40,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:41,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:41,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash -560205479, now seen corresponding path program 7 times [2022-11-23 02:14:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:41,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131517556] [2022-11-23 02:14:41,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:14:41,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:41,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:41,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:41,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-23 02:14:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:14:41,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:14:41,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:41,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:41,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:41,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131517556] [2022-11-23 02:14:41,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131517556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:41,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:41,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 02:14:41,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140963454] [2022-11-23 02:14:41,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:41,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:14:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:14:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:14:41,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:41,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:41,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:41,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:42,780 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2022-11-23 02:14:42,780 INFO L131 PetriNetUnfolder]: For 12764/12764 co-relation queries the response was YES. [2022-11-23 02:14:42,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12764/12764 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2600 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2022-11-23 02:14:42,787 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2022-11-23 02:14:42,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2022-11-23 02:14:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:14:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 02:14:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-11-23 02:14:42,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.446484375 [2022-11-23 02:14:42,795 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-11-23 02:14:42,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-11-23 02:14:42,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:42,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-11-23 02:14:42,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:42,809 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:42,809 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1143 transitions. [2022-11-23 02:14:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2022-11-23 02:14:42,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-11-23 02:14:42,843 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2022-11-23 02:14:42,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-11-23 02:14:42,844 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2022-11-23 02:14:42,844 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2022-11-23 02:14:42,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:42,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:42,845 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:42,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:43,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:43,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash -559225259, now seen corresponding path program 8 times [2022-11-23 02:14:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:43,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911467601] [2022-11-23 02:14:43,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:14:43,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:43,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:43,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-23 02:14:43,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:14:43,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:14:43,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:43,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:14:43,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911467601] [2022-11-23 02:14:43,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911467601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:43,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:43,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 02:14:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132707984] [2022-11-23 02:14:43,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:43,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 02:14:43,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:43,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 02:14:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:14:43,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:43,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:43,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:43,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:43,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:44,758 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2022-11-23 02:14:44,758 INFO L131 PetriNetUnfolder]: For 24213/24213 co-relation queries the response was YES. [2022-11-23 02:14:44,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24213/24213 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3064 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2022-11-23 02:14:44,765 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2022-11-23 02:14:44,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2022-11-23 02:14:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 02:14:44,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-23 02:14:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1285 transitions. [2022-11-23 02:14:44,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461805555555556 [2022-11-23 02:14:44,769 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1285 transitions. [2022-11-23 02:14:44,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1285 transitions. [2022-11-23 02:14:44,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:44,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1285 transitions. [2022-11-23 02:14:44,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.38888888888889) internal successors, (1285), 18 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:44,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:44,777 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:44,778 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1285 transitions. [2022-11-23 02:14:44,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2022-11-23 02:14:44,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2022-11-23 02:14:44,853 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2022-11-23 02:14:44,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2022-11-23 02:14:44,854 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2022-11-23 02:14:44,854 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2022-11-23 02:14:44,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:44,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:44,855 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:44,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:45,067 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 638264665, now seen corresponding path program 9 times [2022-11-23 02:14:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:45,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248796814] [2022-11-23 02:14:45,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:14:45,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:45,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:45,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-23 02:14:45,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 02:14:45,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:14:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:45,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:45,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:45,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248796814] [2022-11-23 02:14:45,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248796814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:45,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:45,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 02:14:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525432602] [2022-11-23 02:14:45,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:45,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:14:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:14:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:14:45,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:45,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:45,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:45,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:45,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:47,852 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2022-11-23 02:14:47,852 INFO L131 PetriNetUnfolder]: For 44617/44617 co-relation queries the response was YES. [2022-11-23 02:14:47,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 44617/44617 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 94 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2022-11-23 02:14:47,863 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2022-11-23 02:14:47,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2022-11-23 02:14:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 02:14:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-23 02:14:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1706 transitions. [2022-11-23 02:14:47,867 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44427083333333334 [2022-11-23 02:14:47,868 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1706 transitions. [2022-11-23 02:14:47,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1706 transitions. [2022-11-23 02:14:47,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:47,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1706 transitions. [2022-11-23 02:14:47,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 71.08333333333333) internal successors, (1706), 24 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:47,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:47,884 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:47,885 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1706 transitions. [2022-11-23 02:14:47,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2022-11-23 02:14:48,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2022-11-23 02:14:48,019 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2022-11-23 02:14:48,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2022-11-23 02:14:48,020 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2022-11-23 02:14:48,020 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2022-11-23 02:14:48,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:48,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:48,021 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:48,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:48,233 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash 547635741, now seen corresponding path program 10 times [2022-11-23 02:14:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:48,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857482612] [2022-11-23 02:14:48,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:14:48,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:48,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:48,235 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:48,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-23 02:14:48,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:14:48,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:48,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:14:48,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:48,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:48,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857482612] [2022-11-23 02:14:48,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857482612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:48,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:48,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 02:14:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577354005] [2022-11-23 02:14:48,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:14:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:14:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:14:49,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:49,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:49,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:49,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:49,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:52,878 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2022-11-23 02:14:52,878 INFO L131 PetriNetUnfolder]: For 76972/76972 co-relation queries the response was YES. [2022-11-23 02:14:52,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76972/76972 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6372 event pairs, 40 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2022-11-23 02:14:52,892 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2022-11-23 02:14:52,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2022-11-23 02:14:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 02:14:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-23 02:14:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2484 transitions. [2022-11-23 02:14:52,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44357142857142856 [2022-11-23 02:14:52,898 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2484 transitions. [2022-11-23 02:14:52,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2484 transitions. [2022-11-23 02:14:52,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:52,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2484 transitions. [2022-11-23 02:14:52,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 70.97142857142858) internal successors, (2484), 35 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:52,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:52,914 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:52,914 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2484 transitions. [2022-11-23 02:14:52,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2022-11-23 02:14:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2022-11-23 02:14:53,093 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2022-11-23 02:14:53,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2022-11-23 02:14:53,094 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2022-11-23 02:14:53,095 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2022-11-23 02:14:53,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:53,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:53,104 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:53,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:53,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 548615961, now seen corresponding path program 11 times [2022-11-23 02:14:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:53,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621274121] [2022-11-23 02:14:53,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:14:53,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:53,319 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:53,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-23 02:14:53,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-23 02:14:53,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:14:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:53,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:54,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:54,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621274121] [2022-11-23 02:14:54,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621274121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:54,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:54,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 02:14:54,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623013102] [2022-11-23 02:14:54,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:54,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:14:54,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:14:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:14:54,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:54,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:54,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:54,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:54,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:14:57,239 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2022-11-23 02:14:57,240 INFO L131 PetriNetUnfolder]: For 116934/116934 co-relation queries the response was YES. [2022-11-23 02:14:57,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116934/116934 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7116 event pairs, 31 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2022-11-23 02:14:57,264 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2022-11-23 02:14:57,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2022-11-23 02:14:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 02:14:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-23 02:14:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2134 transitions. [2022-11-23 02:14:57,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44458333333333333 [2022-11-23 02:14:57,271 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2134 transitions. [2022-11-23 02:14:57,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2134 transitions. [2022-11-23 02:14:57,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:14:57,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2134 transitions. [2022-11-23 02:14:57,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 71.13333333333334) internal successors, (2134), 30 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:57,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:57,284 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:57,284 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2134 transitions. [2022-11-23 02:14:57,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2022-11-23 02:14:57,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2022-11-23 02:14:57,844 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2022-11-23 02:14:57,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2022-11-23 02:14:57,845 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2022-11-23 02:14:57,846 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2022-11-23 02:14:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:57,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:14:57,847 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:14:57,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-23 02:14:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:58,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:14:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:14:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1638218583, now seen corresponding path program 12 times [2022-11-23 02:14:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:14:58,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92791654] [2022-11-23 02:14:58,059 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:14:58,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:14:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:14:58,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:14:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-23 02:14:58,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-23 02:14:58,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:14:58,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:14:58,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:14:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:58,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:14:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:14:58,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:14:58,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92791654] [2022-11-23 02:14:58,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92791654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:14:58,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:14:58,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 02:14:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877029703] [2022-11-23 02:14:58,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:14:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 02:14:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:14:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 02:14:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-23 02:14:59,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:14:59,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:14:59,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:14:59,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:14:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:01,534 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2022-11-23 02:15:01,534 INFO L131 PetriNetUnfolder]: For 112927/112927 co-relation queries the response was YES. [2022-11-23 02:15:01,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112927/112927 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7847 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2022-11-23 02:15:01,549 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2022-11-23 02:15:01,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2022-11-23 02:15:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 02:15:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-23 02:15:01,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1992 transitions. [2022-11-23 02:15:01,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4446428571428571 [2022-11-23 02:15:01,554 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1992 transitions. [2022-11-23 02:15:01,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1992 transitions. [2022-11-23 02:15:01,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:01,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1992 transitions. [2022-11-23 02:15:01,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 71.14285714285714) internal successors, (1992), 28 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:01,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 160.0) internal successors, (4640), 29 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:01,566 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 160.0) internal successors, (4640), 29 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:01,601 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1992 transitions. [2022-11-23 02:15:01,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2022-11-23 02:15:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2022-11-23 02:15:01,920 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2022-11-23 02:15:01,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2022-11-23 02:15:01,920 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2022-11-23 02:15:01,921 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2022-11-23 02:15:01,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:01,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:01,921 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:15:01,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-23 02:15:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:02,132 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:15:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 908134981, now seen corresponding path program 13 times [2022-11-23 02:15:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:15:02,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563247035] [2022-11-23 02:15:02,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:15:02,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:15:02,134 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:15:02,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-23 02:15:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:15:02,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:15:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:15:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:02,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:15:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:03,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:15:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563247035] [2022-11-23 02:15:03,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563247035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:15:03,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:15:03,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:15:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273236865] [2022-11-23 02:15:03,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:15:03,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:15:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:15:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:15:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:15:04,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:15:04,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:04,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:04,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:15:04,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:13,865 INFO L130 PetriNetUnfolder]: 924/1663 cut-off events. [2022-11-23 02:15:13,865 INFO L131 PetriNetUnfolder]: For 171852/171852 co-relation queries the response was YES. [2022-11-23 02:15:13,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18483 conditions, 1663 events. 924/1663 cut-off events. For 171852/171852 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8333 event pairs, 12 based on Foata normal form. 28/1691 useless extension candidates. Maximal degree in co-relation 18391. Up to 480 conditions per place. [2022-11-23 02:15:13,884 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 95 selfloop transitions, 217 changer transitions 102/414 dead transitions. [2022-11-23 02:15:13,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 414 transitions, 9487 flow [2022-11-23 02:15:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 02:15:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-23 02:15:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3825 transitions. [2022-11-23 02:15:13,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2022-11-23 02:15:13,902 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3825 transitions. [2022-11-23 02:15:13,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3825 transitions. [2022-11-23 02:15:13,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:13,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3825 transitions. [2022-11-23 02:15:13,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 70.83333333333333) internal successors, (3825), 54 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 160.0) internal successors, (8800), 55 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:13,937 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 160.0) internal successors, (8800), 55 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:13,937 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 54 states and 3825 transitions. [2022-11-23 02:15:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 414 transitions, 9487 flow [2022-11-23 02:15:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 414 transitions, 8807 flow, removed 313 selfloop flow, removed 9 redundant places. [2022-11-23 02:15:14,395 INFO L231 Difference]: Finished difference. Result has 294 places, 253 transitions, 5443 flow [2022-11-23 02:15:14,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=5443, PETRI_PLACES=294, PETRI_TRANSITIONS=253} [2022-11-23 02:15:14,396 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 270 predicate places. [2022-11-23 02:15:14,396 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 253 transitions, 5443 flow [2022-11-23 02:15:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:14,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:14,396 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:15:14,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-23 02:15:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:14,601 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:15:14,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1596433499, now seen corresponding path program 14 times [2022-11-23 02:15:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:15:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814407675] [2022-11-23 02:15:14,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:15:14,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:14,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:15:14,603 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:15:14,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-23 02:15:14,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:15:14,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:15:14,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:15:14,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:15:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:15,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:15:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:16,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:15:16,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814407675] [2022-11-23 02:15:16,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814407675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:15:16,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:15:16,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:15:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424562599] [2022-11-23 02:15:16,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:15:16,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:15:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:15:16,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:15:16,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:15:16,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:15:16,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 253 transitions, 5443 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:16,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:16,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:15:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:19,556 INFO L130 PetriNetUnfolder]: 980/1775 cut-off events. [2022-11-23 02:15:19,556 INFO L131 PetriNetUnfolder]: For 254312/254312 co-relation queries the response was YES. [2022-11-23 02:15:19,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22231 conditions, 1775 events. 980/1775 cut-off events. For 254312/254312 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8909 event pairs, 371 based on Foata normal form. 40/1815 useless extension candidates. Maximal degree in co-relation 22125. Up to 1501 conditions per place. [2022-11-23 02:15:19,585 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 263 selfloop transitions, 33 changer transitions 47/343 dead transitions. [2022-11-23 02:15:19,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 343 transitions, 8675 flow [2022-11-23 02:15:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 02:15:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-23 02:15:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1841 transitions. [2022-11-23 02:15:19,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4425480769230769 [2022-11-23 02:15:19,590 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1841 transitions. [2022-11-23 02:15:19,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1841 transitions. [2022-11-23 02:15:19,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:19,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1841 transitions. [2022-11-23 02:15:19,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 70.8076923076923) internal successors, (1841), 26 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:19,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:19,600 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:19,601 INFO L175 Difference]: Start difference. First operand has 294 places, 253 transitions, 5443 flow. Second operand 26 states and 1841 transitions. [2022-11-23 02:15:19,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 343 transitions, 8675 flow [2022-11-23 02:15:20,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 343 transitions, 6940 flow, removed 617 selfloop flow, removed 43 redundant places. [2022-11-23 02:15:20,336 INFO L231 Difference]: Finished difference. Result has 290 places, 267 transitions, 4832 flow [2022-11-23 02:15:20,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=3856, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4832, PETRI_PLACES=290, PETRI_TRANSITIONS=267} [2022-11-23 02:15:20,336 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 266 predicate places. [2022-11-23 02:15:20,337 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 267 transitions, 4832 flow [2022-11-23 02:15:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:20,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:20,338 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:15:20,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-23 02:15:20,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:20,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:15:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 680447811, now seen corresponding path program 15 times [2022-11-23 02:15:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:15:20,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743343501] [2022-11-23 02:15:20,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:15:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:15:20,541 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:15:20,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-23 02:15:20,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 02:15:20,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:15:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:15:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:15:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:21,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:15:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:22,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:15:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743343501] [2022-11-23 02:15:22,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743343501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:15:22,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:15:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:15:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91880514] [2022-11-23 02:15:22,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:15:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:15:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:15:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:15:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:15:22,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:15:22,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 267 transitions, 4832 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:22,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:22,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:15:22,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:30,302 INFO L130 PetriNetUnfolder]: 1264/2335 cut-off events. [2022-11-23 02:15:30,302 INFO L131 PetriNetUnfolder]: For 408844/408844 co-relation queries the response was YES. [2022-11-23 02:15:30,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31137 conditions, 2335 events. 1264/2335 cut-off events. For 408844/408844 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12510 event pairs, 333 based on Foata normal form. 40/2375 useless extension candidates. Maximal degree in co-relation 31021. Up to 1316 conditions per place. [2022-11-23 02:15:30,331 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 305 selfloop transitions, 122 changer transitions 59/486 dead transitions. [2022-11-23 02:15:30,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 486 transitions, 12007 flow [2022-11-23 02:15:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 02:15:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-23 02:15:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3457 transitions. [2022-11-23 02:15:30,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44094387755102044 [2022-11-23 02:15:30,338 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3457 transitions. [2022-11-23 02:15:30,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3457 transitions. [2022-11-23 02:15:30,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:30,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3457 transitions. [2022-11-23 02:15:30,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 70.55102040816327) internal successors, (3457), 49 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:30,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 160.0) internal successors, (8000), 50 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:30,355 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 160.0) internal successors, (8000), 50 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:30,355 INFO L175 Difference]: Start difference. First operand has 290 places, 267 transitions, 4832 flow. Second operand 49 states and 3457 transitions. [2022-11-23 02:15:30,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 486 transitions, 12007 flow [2022-11-23 02:15:31,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 486 transitions, 11247 flow, removed 361 selfloop flow, removed 11 redundant places. [2022-11-23 02:15:31,980 INFO L231 Difference]: Finished difference. Result has 352 places, 330 transitions, 7249 flow [2022-11-23 02:15:31,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7249, PETRI_PLACES=352, PETRI_TRANSITIONS=330} [2022-11-23 02:15:31,981 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2022-11-23 02:15:31,981 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 330 transitions, 7249 flow [2022-11-23 02:15:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:31,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:31,982 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:15:31,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-23 02:15:32,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:32,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:15:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2057091391, now seen corresponding path program 16 times [2022-11-23 02:15:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:15:32,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842458152] [2022-11-23 02:15:32,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:15:32,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:15:32,196 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:15:32,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-23 02:15:32,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:15:32,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:15:32,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:15:32,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:15:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:32,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:15:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:33,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:15:33,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842458152] [2022-11-23 02:15:33,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842458152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:15:33,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:15:33,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:15:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935654971] [2022-11-23 02:15:33,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:15:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:15:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:15:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:15:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:15:34,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:15:34,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 330 transitions, 7249 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:34,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:34,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:15:34,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:15:44,075 INFO L130 PetriNetUnfolder]: 1556/2911 cut-off events. [2022-11-23 02:15:44,075 INFO L131 PetriNetUnfolder]: For 779025/779025 co-relation queries the response was YES. [2022-11-23 02:15:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46972 conditions, 2911 events. 1556/2911 cut-off events. For 779025/779025 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 16660 event pairs, 224 based on Foata normal form. 48/2959 useless extension candidates. Maximal degree in co-relation 46831. Up to 1032 conditions per place. [2022-11-23 02:15:44,113 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 267 selfloop transitions, 253 changer transitions 67/587 dead transitions. [2022-11-23 02:15:44,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 587 transitions, 17528 flow [2022-11-23 02:15:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-23 02:15:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-23 02:15:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4093 transitions. [2022-11-23 02:15:44,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4410560344827586 [2022-11-23 02:15:44,122 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4093 transitions. [2022-11-23 02:15:44,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4093 transitions. [2022-11-23 02:15:44,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:15:44,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4093 transitions. [2022-11-23 02:15:44,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 70.56896551724138) internal successors, (4093), 58 states have internal predecessors, (4093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:44,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 160.0) internal successors, (9440), 59 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:44,142 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 160.0) internal successors, (9440), 59 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:44,142 INFO L175 Difference]: Start difference. First operand has 352 places, 330 transitions, 7249 flow. Second operand 58 states and 4093 transitions. [2022-11-23 02:15:44,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 587 transitions, 17528 flow [2022-11-23 02:15:46,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 587 transitions, 15298 flow, removed 1069 selfloop flow, removed 21 redundant places. [2022-11-23 02:15:46,793 INFO L231 Difference]: Finished difference. Result has 415 places, 405 transitions, 10230 flow [2022-11-23 02:15:46,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5167, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=10230, PETRI_PLACES=415, PETRI_TRANSITIONS=405} [2022-11-23 02:15:46,794 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 391 predicate places. [2022-11-23 02:15:46,794 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 405 transitions, 10230 flow [2022-11-23 02:15:46,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:46,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:15:46,795 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:15:46,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-23 02:15:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:46,995 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:15:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:15:46,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2055158327, now seen corresponding path program 17 times [2022-11-23 02:15:46,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:15:46,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466369044] [2022-11-23 02:15:46,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:15:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:15:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:15:46,997 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:15:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-23 02:15:47,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-23 02:15:47,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:15:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:15:47,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:15:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:47,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:15:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:15:48,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:15:48,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466369044] [2022-11-23 02:15:48,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466369044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:15:48,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:15:48,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:15:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201142232] [2022-11-23 02:15:48,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:15:48,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:15:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:15:48,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:15:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:15:48,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:15:48,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 405 transitions, 10230 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:15:48,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:15:48,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:15:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:02,524 INFO L130 PetriNetUnfolder]: 2160/4027 cut-off events. [2022-11-23 02:16:02,524 INFO L131 PetriNetUnfolder]: For 1518331/1518331 co-relation queries the response was YES. [2022-11-23 02:16:02,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76874 conditions, 4027 events. 2160/4027 cut-off events. For 1518331/1518331 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 24427 event pairs, 69 based on Foata normal form. 72/4099 useless extension candidates. Maximal degree in co-relation 76709. Up to 1504 conditions per place. [2022-11-23 02:16:02,661 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 220 selfloop transitions, 495 changer transitions 63/778 dead transitions. [2022-11-23 02:16:02,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 778 transitions, 27317 flow [2022-11-23 02:16:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-23 02:16:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-11-23 02:16:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4947 transitions. [2022-11-23 02:16:02,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44169642857142855 [2022-11-23 02:16:02,673 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4947 transitions. [2022-11-23 02:16:02,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4947 transitions. [2022-11-23 02:16:02,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:02,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4947 transitions. [2022-11-23 02:16:02,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 70.67142857142858) internal successors, (4947), 70 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:02,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 160.0) internal successors, (11360), 71 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:02,704 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 160.0) internal successors, (11360), 71 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:02,704 INFO L175 Difference]: Start difference. First operand has 415 places, 405 transitions, 10230 flow. Second operand 70 states and 4947 transitions. [2022-11-23 02:16:02,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 778 transitions, 27317 flow [2022-11-23 02:16:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 778 transitions, 23225 flow, removed 1940 selfloop flow, removed 25 redundant places. [2022-11-23 02:16:06,910 INFO L231 Difference]: Finished difference. Result has 478 places, 587 transitions, 18948 flow [2022-11-23 02:16:06,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=18948, PETRI_PLACES=478, PETRI_TRANSITIONS=587} [2022-11-23 02:16:06,911 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 454 predicate places. [2022-11-23 02:16:06,912 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 587 transitions, 18948 flow [2022-11-23 02:16:06,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:06,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:06,912 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:06,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:07,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:16:07,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:16:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2013785131, now seen corresponding path program 18 times [2022-11-23 02:16:07,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:16:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228461404] [2022-11-23 02:16:07,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:16:07,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:16:07,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:16:07,126 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:16:07,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-23 02:16:07,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-23 02:16:07,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:16:07,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:16:07,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:16:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:07,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:16:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:16:08,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:16:08,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228461404] [2022-11-23 02:16:08,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228461404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:16:08,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:16:08,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 02:16:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364033510] [2022-11-23 02:16:08,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:16:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 02:16:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:16:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 02:16:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-11-23 02:16:08,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 02:16:08,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 587 transitions, 18948 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:08,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:16:08,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 02:16:08,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:16:16,603 INFO L130 PetriNetUnfolder]: 2180/4063 cut-off events. [2022-11-23 02:16:16,604 INFO L131 PetriNetUnfolder]: For 2084583/2084583 co-relation queries the response was YES. [2022-11-23 02:16:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82218 conditions, 4063 events. 2180/4063 cut-off events. For 2084583/2084583 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 24620 event pairs, 27 based on Foata normal form. 96/4159 useless extension candidates. Maximal degree in co-relation 82034. Up to 1512 conditions per place. [2022-11-23 02:16:16,664 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 136 selfloop transitions, 528 changer transitions 90/754 dead transitions. [2022-11-23 02:16:16,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 754 transitions, 27907 flow [2022-11-23 02:16:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 02:16:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-23 02:16:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3405 transitions. [2022-11-23 02:16:16,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.443359375 [2022-11-23 02:16:16,672 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3405 transitions. [2022-11-23 02:16:16,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3405 transitions. [2022-11-23 02:16:16,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:16:16,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3405 transitions. [2022-11-23 02:16:16,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 70.9375) internal successors, (3405), 48 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:16,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 160.0) internal successors, (7840), 49 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:16,691 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 160.0) internal successors, (7840), 49 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:16,691 INFO L175 Difference]: Start difference. First operand has 478 places, 587 transitions, 18948 flow. Second operand 48 states and 3405 transitions. [2022-11-23 02:16:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 754 transitions, 27907 flow [2022-11-23 02:16:23,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 754 transitions, 16837 flow, removed 5381 selfloop flow, removed 27 redundant places. [2022-11-23 02:16:23,860 INFO L231 Difference]: Finished difference. Result has 503 places, 599 transitions, 12603 flow [2022-11-23 02:16:23,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=12603, PETRI_PLACES=503, PETRI_TRANSITIONS=599} [2022-11-23 02:16:23,861 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 479 predicate places. [2022-11-23 02:16:23,861 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 599 transitions, 12603 flow [2022-11-23 02:16:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:16:23,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:16:23,862 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:23,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:24,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:16:24,062 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 02:16:24,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:16:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash -249091942, now seen corresponding path program 19 times [2022-11-23 02:16:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:16:24,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829782320] [2022-11-23 02:16:24,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:16:24,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:16:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:16:24,065 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 02:16:24,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-23 02:16:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:16:24,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:16:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:16:24,317 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-23 02:16:24,318 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:16:24,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-11-23 02:16:24,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-23 02:16:24,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-23 02:16:24,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-23 02:16:24,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-23 02:16:24,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-23 02:16:24,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-23 02:16:24,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-23 02:16:24,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-23 02:16:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 02:16:24,531 INFO L444 BasicCegarLoop]: Path program histogram: [19, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 02:16:24,536 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 02:16:24,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:16:24,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:16:24 BasicIcfg [2022-11-23 02:16:24,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:16:24,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:16:24,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:16:24,610 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:16:24,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:18" (3/4) ... [2022-11-23 02:16:24,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 02:16:24,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:16:24,614 INFO L158 Benchmark]: Toolchain (without parser) took 127047.60ms. Allocated memory was 81.8MB in the beginning and 868.2MB in the end (delta: 786.4MB). Free memory was 60.9MB in the beginning and 453.3MB in the end (delta: -392.4MB). Peak memory consumption was 392.5MB. Max. memory is 16.1GB. [2022-11-23 02:16:24,614 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:16:24,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 677.79ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 40.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:16:24,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.38ms. Allocated memory is still 81.8MB. Free memory was 40.2MB in the beginning and 38.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:16:24,615 INFO L158 Benchmark]: Boogie Preprocessor took 75.34ms. Allocated memory is still 81.8MB. Free memory was 38.4MB in the beginning and 60.6MB in the end (delta: -22.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 02:16:24,616 INFO L158 Benchmark]: RCFGBuilder took 531.79ms. Allocated memory is still 81.8MB. Free memory was 60.6MB in the beginning and 45.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 02:16:24,616 INFO L158 Benchmark]: TraceAbstraction took 125684.72ms. Allocated memory was 81.8MB in the beginning and 868.2MB in the end (delta: 786.4MB). Free memory was 45.2MB in the beginning and 454.3MB in the end (delta: -409.2MB). Peak memory consumption was 376.5MB. Max. memory is 16.1GB. [2022-11-23 02:16:24,616 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 868.2MB. Free memory was 454.3MB in the beginning and 453.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:16:24,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 81.8MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 677.79ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 40.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.38ms. Allocated memory is still 81.8MB. Free memory was 40.2MB in the beginning and 38.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 75.34ms. Allocated memory is still 81.8MB. Free memory was 38.4MB in the beginning and 60.6MB in the end (delta: -22.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 531.79ms. Allocated memory is still 81.8MB. Free memory was 60.6MB in the beginning and 45.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 125684.72ms. Allocated memory was 81.8MB in the beginning and 868.2MB in the end (delta: 786.4MB). Free memory was 45.2MB in the beginning and 454.3MB in the end (delta: -409.2MB). Peak memory consumption was 376.5MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 868.2MB. Free memory was 454.3MB in the beginning and 453.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 79 PlacesBefore, 24 PlacesAfterwards, 77 TransitionsBefore, 20 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 1189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1012, independent: 982, independent conditional: 0, independent unconditional: 982, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 829, independent: 815, independent conditional: 0, independent unconditional: 815, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 829, independent: 815, independent conditional: 0, independent unconditional: 815, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1012, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 829, unknown conditional: 0, unknown unconditional: 829] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [#in~arg={0:0}, #in~argv={29:28}, argc=27, argv={29:28}, i=3, id1={3:0}, id2={7:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0, unknown-#in~argc-unknown=27] [L696] 1 int k = 0; VAL [#in~arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={29:28}, arg={0:0}, argc=27, argv={29:28}, i=3, id1={3:0}, id2={7:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1, unknown-#in~argc-unknown=27] [L704] 2 int k = 0; VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*10 +6); VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={29:28}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, condI=0, i=7, id1={3:0}, id2={7:0}, j=6, k=1, k=0, unknown-#in~argc-unknown=27] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={29:28}, arg={0:0}, arg={0:0}, argc=27, argv={29:28}, condI=0, condJ=1, i=25, id1={3:0}, id2={7:0}, j=26, k=10, k=10, unknown-#in~argc-unknown=27] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 8 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: 125.5s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 95.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 6637 SdHoareTripleChecker+Valid, 24.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6414 mSDsluCounter, 2374 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2336 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18922 IncrementalHoareTripleChecker+Invalid, 19610 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 38 mSDtfsCounter, 18922 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 948 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10628 ImplicationChecksByTransitivity, 51.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18948occurred in iteration=25, InterpolantAutomatonStates: 548, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 504 ConstructedInterpolants, 6 QuantifiedInterpolants, 3939 SizeOfPredicates, 129 NumberOfNonLiveVariables, 2013 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 40 InterpolantComputations, 12 PerfectInterpolantSequences, 8/512 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 02:16:24,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56ae4913-92a5-4750-9338-572e9426b2b8/bin/uautomizer-QkZJyEgLgS/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: UNKNOWN: Overapproximated counterexample