./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:55:57,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:55:57,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:55:57,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:55:57,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:55:57,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:55:57,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:55:57,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:55:57,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:55:57,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:55:57,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:55:57,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:55:57,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:55:57,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:55:57,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:55:57,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:55:57,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:55:57,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:55:57,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:55:57,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:55:57,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:55:57,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:55:57,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:55:57,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:55:57,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:55:57,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:55:57,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:55:57,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:55:57,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:55:57,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:55:57,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:55:57,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:55:57,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:55:57,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:55:57,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:55:57,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:55:57,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:55:57,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:55:57,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:55:57,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:55:57,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:55:57,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 16:55:57,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:55:57,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:55:57,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:55:57,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:55:57,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:55:57,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:55:57,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:55:57,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:55:57,364 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:55:57,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:55:57,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:55:57,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:55:57,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:55:57,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:55:57,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:55:57,367 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 16:55:57,367 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 16:55:57,367 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 16:55:57,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:55:57,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:55:57,368 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:55:57,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:55:57,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:55:57,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:55:57,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:55:57,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:55:57,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:55:57,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:55:57,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:55:57,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:55:57,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:55:57,371 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:55:57,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:55:57,372 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_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 [2022-11-25 16:55:57,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:55:57,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:55:57,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:55:57,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:55:57,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:55:57,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2022-11-25 16:56:01,311 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:56:01,520 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:56:01,521 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2022-11-25 16:56:01,529 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/data/d9b33a400/2d2543f2c9784b84bba13074afc9c6ae/FLAG4d176fd00 [2022-11-25 16:56:01,555 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/data/d9b33a400/2d2543f2c9784b84bba13074afc9c6ae [2022-11-25 16:56:01,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:56:01,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:56:01,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:01,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:56:01,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:56:01,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15005109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01, skipping insertion in model container [2022-11-25 16:56:01,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:56:01,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:56:01,861 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_16167d45-550d-4a29-99ca-68f08f1045dc/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-11-25 16:56:01,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:01,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:56:01,907 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_16167d45-550d-4a29-99ca-68f08f1045dc/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c[2135,2148] [2022-11-25 16:56:01,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:56:01,925 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:56:01,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01 WrapperNode [2022-11-25 16:56:01,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:56:01,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:01,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:56:01,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:56:01,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,971 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-25 16:56:01,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:56:01,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:56:01,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:56:01,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:56:01,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:01,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:02,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:02,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:02,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:02,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:56:02,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:56:02,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:56:02,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:56:02,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (1/1) ... [2022-11-25 16:56:02,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:56:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:02,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:56:02,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:56:02,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:56:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 16:56:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 16:56:02,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 16:56:02,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 16:56:02,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 16:56:02,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 16:56:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:56:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:56:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:56:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:56:02,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:56:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:56:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:56:02,140 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:56:02,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:56:02,347 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:56:02,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:56:02,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:56:02,762 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 16:56:02,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:02 BoogieIcfgContainer [2022-11-25 16:56:02,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:56:02,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:56:02,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:56:02,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:56:02,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:56:01" (1/3) ... [2022-11-25 16:56:02,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:02, skipping insertion in model container [2022-11-25 16:56:02,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:56:01" (2/3) ... [2022-11-25 16:56:02,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:56:02, skipping insertion in model container [2022-11-25 16:56:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:56:02" (3/3) ... [2022-11-25 16:56:02,777 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2022-11-25 16:56:02,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:56:02,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-25 16:56:02,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:56:02,889 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:56:02,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 123 transitions, 270 flow [2022-11-25 16:56:03,007 INFO L130 PetriNetUnfolder]: 7/120 cut-off events. [2022-11-25 16:56:03,007 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 7/120 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-11-25 16:56:03,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 123 transitions, 270 flow [2022-11-25 16:56:03,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 248 flow [2022-11-25 16:56:03,026 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:56:03,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 115 transitions, 248 flow [2022-11-25 16:56:03,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 115 transitions, 248 flow [2022-11-25 16:56:03,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 248 flow [2022-11-25 16:56:03,087 INFO L130 PetriNetUnfolder]: 7/115 cut-off events. [2022-11-25 16:56:03,087 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:03,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 7/115 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-11-25 16:56:03,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2022-11-25 16:56:07,998 INFO L134 LiptonReduction]: Checked pairs total: 1732 [2022-11-25 16:56:07,998 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-11-25 16:56:08,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:56:08,025 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;@3a6dd70b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:56:08,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 16:56:08,028 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 16:56:08,028 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:56:08,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:08,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 16:56:08,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:08,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 451, now seen corresponding path program 1 times [2022-11-25 16:56:08,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:08,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100290323] [2022-11-25 16:56:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:08,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100290323] [2022-11-25 16:56:08,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100290323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:08,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:08,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 16:56:08,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466209246] [2022-11-25 16:56:08,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:56:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:56:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:56:08,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 232 [2022-11-25 16:56:08,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 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) [2022-11-25 16:56:08,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:08,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 232 [2022-11-25 16:56:08,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:08,476 INFO L130 PetriNetUnfolder]: 556/763 cut-off events. [2022-11-25 16:56:08,476 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-25 16:56:08,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 763 events. 556/763 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2739 event pairs, 252 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 1210. Up to 752 conditions per place. [2022-11-25 16:56:08,486 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2022-11-25 16:56:08,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 140 flow [2022-11-25 16:56:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:56:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:56:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 256 transitions. [2022-11-25 16:56:08,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2022-11-25 16:56:08,505 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 256 transitions. [2022-11-25 16:56:08,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 256 transitions. [2022-11-25 16:56:08,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:08,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 256 transitions. [2022-11-25 16:56:08,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:08,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:08,520 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:08,522 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 2 states and 256 transitions. [2022-11-25 16:56:08,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 140 flow [2022-11-25 16:56:08,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 16:56:08,529 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2022-11-25 16:56:08,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2022-11-25 16:56:08,536 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2022-11-25 16:56:08,536 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2022-11-25 16:56:08,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 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) [2022-11-25 16:56:08,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:08,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:56:08,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:56:08,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash 442331, now seen corresponding path program 1 times [2022-11-25 16:56:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953335416] [2022-11-25 16:56:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:08,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953335416] [2022-11-25 16:56:08,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953335416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:08,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:08,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949564557] [2022-11-25 16:56:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:08,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:08,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:08,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 232 [2022-11-25 16:56:08,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:08,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:08,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 232 [2022-11-25 16:56:08,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:09,127 INFO L130 PetriNetUnfolder]: 529/724 cut-off events. [2022-11-25 16:56:09,127 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:09,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 724 events. 529/724 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2563 event pairs, 239 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 1449. Up to 712 conditions per place. [2022-11-25 16:56:09,134 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-11-25 16:56:09,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 120 flow [2022-11-25 16:56:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-25 16:56:09,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028735632183908 [2022-11-25 16:56:09,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-25 16:56:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-25 16:56:09,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:09,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-25 16:56:09,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,169 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 350 transitions. [2022-11-25 16:56:09,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 120 flow [2022-11-25 16:56:09,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:56:09,171 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2022-11-25 16:56:09,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-11-25 16:56:09,172 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2022-11-25 16:56:09,172 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2022-11-25 16:56:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:09,173 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:56:09,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:56:09,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash 442330, now seen corresponding path program 1 times [2022-11-25 16:56:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:09,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641155196] [2022-11-25 16:56:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:09,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:09,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641155196] [2022-11-25 16:56:09,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641155196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:09,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:09,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896080964] [2022-11-25 16:56:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:09,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:09,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:09,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:09,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:09,467 INFO L130 PetriNetUnfolder]: 502/685 cut-off events. [2022-11-25 16:56:09,467 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:09,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 685 events. 502/685 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2374 event pairs, 226 based on Foata normal form. 0/353 useless extension candidates. Maximal degree in co-relation 1372. Up to 673 conditions per place. [2022-11-25 16:56:09,476 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 16:56:09,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 114 flow [2022-11-25 16:56:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-11-25 16:56:09,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2022-11-25 16:56:09,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-11-25 16:56:09,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-11-25 16:56:09,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:09,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-11-25 16:56:09,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 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) [2022-11-25 16:56:09,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,488 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 333 transitions. [2022-11-25 16:56:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 114 flow [2022-11-25 16:56:09,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:09,490 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 65 flow [2022-11-25 16:56:09,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-11-25 16:56:09,492 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2022-11-25 16:56:09,492 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 65 flow [2022-11-25 16:56:09,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:09,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:56:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:56:09,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 425087994, now seen corresponding path program 1 times [2022-11-25 16:56:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:09,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838983632] [2022-11-25 16:56:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:09,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838983632] [2022-11-25 16:56:09,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838983632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:09,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:09,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:09,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385481626] [2022-11-25 16:56:09,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:09,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:09,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 232 [2022-11-25 16:56:09,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:09,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 232 [2022-11-25 16:56:09,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:09,776 INFO L130 PetriNetUnfolder]: 476/647 cut-off events. [2022-11-25 16:56:09,777 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:09,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 647 events. 476/647 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2217 event pairs, 214 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 1297. Up to 635 conditions per place. [2022-11-25 16:56:09,783 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-11-25 16:56:09,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 107 flow [2022-11-25 16:56:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-25 16:56:09,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49712643678160917 [2022-11-25 16:56:09,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-25 16:56:09,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-25 16:56:09,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:09,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-25 16:56:09,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,799 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 346 transitions. [2022-11-25 16:56:09,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 107 flow [2022-11-25 16:56:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:09,801 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2022-11-25 16:56:09,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-11-25 16:56:09,803 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2022-11-25 16:56:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2022-11-25 16:56:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:09,804 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:56:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:56:09,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 425087996, now seen corresponding path program 1 times [2022-11-25 16:56:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255097562] [2022-11-25 16:56:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:09,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255097562] [2022-11-25 16:56:09,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255097562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:09,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:09,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555024112] [2022-11-25 16:56:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:09,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:09,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:09,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:09,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:09,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:10,123 INFO L130 PetriNetUnfolder]: 450/609 cut-off events. [2022-11-25 16:56:10,124 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 609 events. 450/609 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2010 event pairs, 202 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 1222. Up to 597 conditions per place. [2022-11-25 16:56:10,131 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-11-25 16:56:10,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 100 flow [2022-11-25 16:56:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2022-11-25 16:56:10,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47270114942528735 [2022-11-25 16:56:10,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2022-11-25 16:56:10,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2022-11-25 16:56:10,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:10,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2022-11-25 16:56:10,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,142 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 329 transitions. [2022-11-25 16:56:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 100 flow [2022-11-25 16:56:10,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:10,144 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 59 flow [2022-11-25 16:56:10,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-11-25 16:56:10,145 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2022-11-25 16:56:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 59 flow [2022-11-25 16:56:10,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:10,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:56:10,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash 487680008, now seen corresponding path program 1 times [2022-11-25 16:56:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:10,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013387505] [2022-11-25 16:56:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:10,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:10,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:10,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013387505] [2022-11-25 16:56:10,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013387505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:10,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:10,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370935727] [2022-11-25 16:56:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:10,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:10,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:10,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 232 [2022-11-25 16:56:10,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:10,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 232 [2022-11-25 16:56:10,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:10,460 INFO L130 PetriNetUnfolder]: 351/483 cut-off events. [2022-11-25 16:56:10,460 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 483 events. 351/483 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1552 event pairs, 157 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 971. Up to 471 conditions per place. [2022-11-25 16:56:10,464 INFO L137 encePairwiseOnDemand]: 230/232 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2022-11-25 16:56:10,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 97 flow [2022-11-25 16:56:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2022-11-25 16:56:10,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2022-11-25 16:56:10,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2022-11-25 16:56:10,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2022-11-25 16:56:10,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:10,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2022-11-25 16:56:10,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,472 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 59 flow. Second operand 3 states and 342 transitions. [2022-11-25 16:56:10,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 97 flow [2022-11-25 16:56:10,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:10,474 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2022-11-25 16:56:10,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2022-11-25 16:56:10,475 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2022-11-25 16:56:10,475 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2022-11-25 16:56:10,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:10,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:10,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:56:10,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:10,477 INFO L85 PathProgramCache]: Analyzing trace with hash 487680007, now seen corresponding path program 1 times [2022-11-25 16:56:10,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:10,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376459973] [2022-11-25 16:56:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:10,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:10,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376459973] [2022-11-25 16:56:10,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376459973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:10,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:10,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:56:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541216702] [2022-11-25 16:56:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:10,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2022-11-25 16:56:10,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:10,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2022-11-25 16:56:10,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:10,850 INFO L130 PetriNetUnfolder]: 252/357 cut-off events. [2022-11-25 16:56:10,850 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:56:10,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 357 events. 252/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1083 event pairs, 112 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 720. Up to 345 conditions per place. [2022-11-25 16:56:10,853 INFO L137 encePairwiseOnDemand]: 230/232 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2022-11-25 16:56:10,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 94 flow [2022-11-25 16:56:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-11-25 16:56:10,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4339080459770115 [2022-11-25 16:56:10,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-11-25 16:56:10,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-11-25 16:56:10,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:10,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-11-25 16:56:10,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,860 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 3 states and 302 transitions. [2022-11-25 16:56:10,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 94 flow [2022-11-25 16:56:10,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:10,862 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 57 flow [2022-11-25 16:56:10,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2022-11-25 16:56:10,863 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2022-11-25 16:56:10,863 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 57 flow [2022-11-25 16:56:10,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:10,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:10,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:10,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:56:10,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash 932169056, now seen corresponding path program 1 times [2022-11-25 16:56:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:10,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193391374] [2022-11-25 16:56:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:11,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:11,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193391374] [2022-11-25 16:56:11,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193391374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:11,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:11,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:11,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766308644] [2022-11-25 16:56:11,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:11,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:56:11,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:11,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:56:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:56:11,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 232 [2022-11-25 16:56:11,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:11,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 232 [2022-11-25 16:56:11,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:11,478 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2022-11-25 16:56:11,478 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 16:56:11,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 506 events. 359/506 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1607 event pairs, 39 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1028. Up to 421 conditions per place. [2022-11-25 16:56:11,487 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2022-11-25 16:56:11,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 164 flow [2022-11-25 16:56:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:56:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:56:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-11-25 16:56:11,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.521551724137931 [2022-11-25 16:56:11,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-11-25 16:56:11,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-11-25 16:56:11,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:11,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-11-25 16:56:11,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,494 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 57 flow. Second operand 3 states and 363 transitions. [2022-11-25 16:56:11,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 164 flow [2022-11-25 16:56:11,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:11,497 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2022-11-25 16:56:11,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2022-11-25 16:56:11,501 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2022-11-25 16:56:11,502 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2022-11-25 16:56:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:11,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:56:11,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 926923860, now seen corresponding path program 1 times [2022-11-25 16:56:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:11,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085436287] [2022-11-25 16:56:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:11,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085436287] [2022-11-25 16:56:11,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085436287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:11,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:11,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468284602] [2022-11-25 16:56:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:11,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:11,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:11,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:11,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:11,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:11,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:11,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:12,085 INFO L130 PetriNetUnfolder]: 495/775 cut-off events. [2022-11-25 16:56:12,085 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2022-11-25 16:56:12,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 775 events. 495/775 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3318 event pairs, 117 based on Foata normal form. 96/871 useless extension candidates. Maximal degree in co-relation 1810. Up to 388 conditions per place. [2022-11-25 16:56:12,091 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2022-11-25 16:56:12,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 304 flow [2022-11-25 16:56:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:56:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-25 16:56:12,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2022-11-25 16:56:12,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-25 16:56:12,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-25 16:56:12,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-25 16:56:12,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,105 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,105 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 5 states and 570 transitions. [2022-11-25 16:56:12,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 304 flow [2022-11-25 16:56:12,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:12,109 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 125 flow [2022-11-25 16:56:12,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2022-11-25 16:56:12,111 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2022-11-25 16:56:12,112 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 125 flow [2022-11-25 16:56:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:12,115 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:56:12,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:12,118 INFO L85 PathProgramCache]: Analyzing trace with hash -79211601, now seen corresponding path program 1 times [2022-11-25 16:56:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:12,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876122228] [2022-11-25 16:56:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876122228] [2022-11-25 16:56:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876122228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:12,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:12,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379771641] [2022-11-25 16:56:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:12,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:12,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-11-25 16:56:12,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:12,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-11-25 16:56:12,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:12,745 INFO L130 PetriNetUnfolder]: 818/1295 cut-off events. [2022-11-25 16:56:12,746 INFO L131 PetriNetUnfolder]: For 1810/1893 co-relation queries the response was YES. [2022-11-25 16:56:12,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 1295 events. 818/1295 cut-off events. For 1810/1893 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6237 event pairs, 228 based on Foata normal form. 49/1306 useless extension candidates. Maximal degree in co-relation 3853. Up to 598 conditions per place. [2022-11-25 16:56:12,756 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 58 selfloop transitions, 10 changer transitions 2/72 dead transitions. [2022-11-25 16:56:12,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 449 flow [2022-11-25 16:56:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:56:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2022-11-25 16:56:12,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2022-11-25 16:56:12,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 565 transitions. [2022-11-25 16:56:12,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 565 transitions. [2022-11-25 16:56:12,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:12,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 565 transitions. [2022-11-25 16:56:12,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.0) internal successors, (565), 5 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) [2022-11-25 16:56:12,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,767 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 125 flow. Second operand 5 states and 565 transitions. [2022-11-25 16:56:12,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 449 flow [2022-11-25 16:56:12,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 429 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:12,778 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 217 flow [2022-11-25 16:56:12,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-11-25 16:56:12,780 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2022-11-25 16:56:12,781 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 217 flow [2022-11-25 16:56:12,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:12,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:12,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:12,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:56:12,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -126036981, now seen corresponding path program 2 times [2022-11-25 16:56:12,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642099921] [2022-11-25 16:56:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:12,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:12,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642099921] [2022-11-25 16:56:12,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642099921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:12,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:12,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757515683] [2022-11-25 16:56:12,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:12,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:12,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 232 [2022-11-25 16:56:12,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:12,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:12,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 232 [2022-11-25 16:56:12,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:13,282 INFO L130 PetriNetUnfolder]: 781/1244 cut-off events. [2022-11-25 16:56:13,282 INFO L131 PetriNetUnfolder]: For 2844/3123 co-relation queries the response was YES. [2022-11-25 16:56:13,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 1244 events. 781/1244 cut-off events. For 2844/3123 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6092 event pairs, 197 based on Foata normal form. 165/1378 useless extension candidates. Maximal degree in co-relation 4470. Up to 760 conditions per place. [2022-11-25 16:56:13,294 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 45 selfloop transitions, 7 changer transitions 11/66 dead transitions. [2022-11-25 16:56:13,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 481 flow [2022-11-25 16:56:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:56:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:56:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2022-11-25 16:56:13,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-11-25 16:56:13,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 464 transitions. [2022-11-25 16:56:13,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 464 transitions. [2022-11-25 16:56:13,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:13,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 464 transitions. [2022-11-25 16:56:13,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,306 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 217 flow. Second operand 4 states and 464 transitions. [2022-11-25 16:56:13,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 481 flow [2022-11-25 16:56:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 481 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:56:13,318 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 254 flow [2022-11-25 16:56:13,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2022-11-25 16:56:13,318 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2022-11-25 16:56:13,319 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 254 flow [2022-11-25 16:56:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:13,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:13,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:13,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:56:13,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1205049901, now seen corresponding path program 3 times [2022-11-25 16:56:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:13,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382525394] [2022-11-25 16:56:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:13,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:13,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382525394] [2022-11-25 16:56:13,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382525394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:13,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:13,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581448026] [2022-11-25 16:56:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:13,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:13,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-11-25 16:56:13,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:13,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-11-25 16:56:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:13,908 INFO L130 PetriNetUnfolder]: 791/1263 cut-off events. [2022-11-25 16:56:13,909 INFO L131 PetriNetUnfolder]: For 4694/4810 co-relation queries the response was YES. [2022-11-25 16:56:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5050 conditions, 1263 events. 791/1263 cut-off events. For 4694/4810 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5884 event pairs, 191 based on Foata normal form. 64/1287 useless extension candidates. Maximal degree in co-relation 5036. Up to 626 conditions per place. [2022-11-25 16:56:13,949 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 63 selfloop transitions, 16 changer transitions 6/87 dead transitions. [2022-11-25 16:56:13,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 672 flow [2022-11-25 16:56:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:56:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:56:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 676 transitions. [2022-11-25 16:56:13,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48563218390804597 [2022-11-25 16:56:13,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 676 transitions. [2022-11-25 16:56:13,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 676 transitions. [2022-11-25 16:56:13,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 676 transitions. [2022-11-25 16:56:13,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,960 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 254 flow. Second operand 6 states and 676 transitions. [2022-11-25 16:56:13,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 672 flow [2022-11-25 16:56:13,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 87 transitions, 627 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:13,969 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 355 flow [2022-11-25 16:56:13,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2022-11-25 16:56:13,970 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2022-11-25 16:56:13,970 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 355 flow [2022-11-25 16:56:13,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:13,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:13,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:13,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:56:13,972 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1830325092, now seen corresponding path program 1 times [2022-11-25 16:56:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:13,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427433796] [2022-11-25 16:56:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:14,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427433796] [2022-11-25 16:56:14,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427433796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:14,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:14,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204173124] [2022-11-25 16:56:14,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:14,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:14,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 232 [2022-11-25 16:56:14,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:14,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:14,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 232 [2022-11-25 16:56:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:14,424 INFO L130 PetriNetUnfolder]: 1016/1621 cut-off events. [2022-11-25 16:56:14,424 INFO L131 PetriNetUnfolder]: For 5864/6236 co-relation queries the response was YES. [2022-11-25 16:56:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6857 conditions, 1621 events. 1016/1621 cut-off events. For 5864/6236 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8120 event pairs, 351 based on Foata normal form. 138/1738 useless extension candidates. Maximal degree in co-relation 6842. Up to 963 conditions per place. [2022-11-25 16:56:14,443 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 59 selfloop transitions, 16 changer transitions 7/87 dead transitions. [2022-11-25 16:56:14,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 812 flow [2022-11-25 16:56:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:56:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:56:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2022-11-25 16:56:14,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49676724137931033 [2022-11-25 16:56:14,446 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2022-11-25 16:56:14,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2022-11-25 16:56:14,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:14,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2022-11-25 16:56:14,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:14,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:14,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:14,452 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 355 flow. Second operand 4 states and 461 transitions. [2022-11-25 16:56:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 812 flow [2022-11-25 16:56:14,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 792 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-25 16:56:14,468 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 553 flow [2022-11-25 16:56:14,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2022-11-25 16:56:14,469 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2022-11-25 16:56:14,469 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 553 flow [2022-11-25 16:56:14,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:14,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:14,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:56:14,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:14,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:14,471 INFO L85 PathProgramCache]: Analyzing trace with hash -744989486, now seen corresponding path program 2 times [2022-11-25 16:56:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:14,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097342610] [2022-11-25 16:56:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:14,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097342610] [2022-11-25 16:56:14,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097342610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:14,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:14,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597729681] [2022-11-25 16:56:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:14,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:14,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:14,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:14,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 232 [2022-11-25 16:56:14,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:14,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:14,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 232 [2022-11-25 16:56:14,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:15,035 INFO L130 PetriNetUnfolder]: 1053/1683 cut-off events. [2022-11-25 16:56:15,035 INFO L131 PetriNetUnfolder]: For 9254/9486 co-relation queries the response was YES. [2022-11-25 16:56:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 1683 events. 1053/1683 cut-off events. For 9254/9486 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8394 event pairs, 311 based on Foata normal form. 165/1796 useless extension candidates. Maximal degree in co-relation 8089. Up to 1236 conditions per place. [2022-11-25 16:56:15,056 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 60 selfloop transitions, 19 changer transitions 13/97 dead transitions. [2022-11-25 16:56:15,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 1018 flow [2022-11-25 16:56:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:56:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:56:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2022-11-25 16:56:15,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4978448275862069 [2022-11-25 16:56:15,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 462 transitions. [2022-11-25 16:56:15,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 462 transitions. [2022-11-25 16:56:15,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:15,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 462 transitions. [2022-11-25 16:56:15,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.5) internal successors, (462), 4 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) [2022-11-25 16:56:15,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,064 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 553 flow. Second operand 4 states and 462 transitions. [2022-11-25 16:56:15,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 1018 flow [2022-11-25 16:56:15,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 1005 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:15,088 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 691 flow [2022-11-25 16:56:15,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=691, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2022-11-25 16:56:15,089 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2022-11-25 16:56:15,089 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 691 flow [2022-11-25 16:56:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:15,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:15,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:15,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:56:15,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:15,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1799329179, now seen corresponding path program 4 times [2022-11-25 16:56:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737535732] [2022-11-25 16:56:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:15,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737535732] [2022-11-25 16:56:15,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737535732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:15,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:15,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512683307] [2022-11-25 16:56:15,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:15,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:15,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-11-25 16:56:15,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:15,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-11-25 16:56:15,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:15,820 INFO L130 PetriNetUnfolder]: 1310/2090 cut-off events. [2022-11-25 16:56:15,820 INFO L131 PetriNetUnfolder]: For 11794/11879 co-relation queries the response was YES. [2022-11-25 16:56:15,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10351 conditions, 2090 events. 1310/2090 cut-off events. For 11794/11879 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10802 event pairs, 337 based on Foata normal form. 77/2162 useless extension candidates. Maximal degree in co-relation 10331. Up to 1093 conditions per place. [2022-11-25 16:56:15,846 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 68 selfloop transitions, 34 changer transitions 25/130 dead transitions. [2022-11-25 16:56:15,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 130 transitions, 1498 flow [2022-11-25 16:56:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:56:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:56:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 670 transitions. [2022-11-25 16:56:15,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4813218390804598 [2022-11-25 16:56:15,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 670 transitions. [2022-11-25 16:56:15,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 670 transitions. [2022-11-25 16:56:15,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:15,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 670 transitions. [2022-11-25 16:56:15,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,857 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 691 flow. Second operand 6 states and 670 transitions. [2022-11-25 16:56:15,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 130 transitions, 1498 flow [2022-11-25 16:56:15,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 130 transitions, 1478 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:15,895 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 975 flow [2022-11-25 16:56:15,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=975, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2022-11-25 16:56:15,896 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2022-11-25 16:56:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 975 flow [2022-11-25 16:56:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:15,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:15,897 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:15,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:56:15,898 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1431303710, now seen corresponding path program 2 times [2022-11-25 16:56:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715169964] [2022-11-25 16:56:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:16,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715169964] [2022-11-25 16:56:16,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715169964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:16,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:16,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4639791] [2022-11-25 16:56:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:16,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:16,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:16,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 975 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:16,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:16,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:16,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:16,558 INFO L130 PetriNetUnfolder]: 1127/1790 cut-off events. [2022-11-25 16:56:16,558 INFO L131 PetriNetUnfolder]: For 12914/13062 co-relation queries the response was YES. [2022-11-25 16:56:16,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9740 conditions, 1790 events. 1127/1790 cut-off events. For 12914/13062 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8583 event pairs, 388 based on Foata normal form. 132/1900 useless extension candidates. Maximal degree in co-relation 9717. Up to 1130 conditions per place. [2022-11-25 16:56:16,578 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 74 selfloop transitions, 12 changer transitions 37/127 dead transitions. [2022-11-25 16:56:16,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 127 transitions, 1628 flow [2022-11-25 16:56:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:56:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2022-11-25 16:56:16,581 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4862068965517241 [2022-11-25 16:56:16,582 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2022-11-25 16:56:16,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2022-11-25 16:56:16,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:16,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2022-11-25 16:56:16,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:16,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:16,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:16,587 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 975 flow. Second operand 5 states and 564 transitions. [2022-11-25 16:56:16,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 127 transitions, 1628 flow [2022-11-25 16:56:16,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 127 transitions, 1550 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:16,616 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 979 flow [2022-11-25 16:56:16,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=979, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2022-11-25 16:56:16,617 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2022-11-25 16:56:16,617 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 979 flow [2022-11-25 16:56:16,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:16,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:16,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:16,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 16:56:16,618 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash 526118712, now seen corresponding path program 3 times [2022-11-25 16:56:16,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:16,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961400878] [2022-11-25 16:56:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:16,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961400878] [2022-11-25 16:56:16,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961400878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:16,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:16,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:56:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757776474] [2022-11-25 16:56:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:56:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:56:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:56:16,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 232 [2022-11-25 16:56:16,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 979 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:16,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:16,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 232 [2022-11-25 16:56:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:17,092 INFO L130 PetriNetUnfolder]: 1033/1540 cut-off events. [2022-11-25 16:56:17,092 INFO L131 PetriNetUnfolder]: For 14275/14486 co-relation queries the response was YES. [2022-11-25 16:56:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 1540 events. 1033/1540 cut-off events. For 14275/14486 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6815 event pairs, 243 based on Foata normal form. 149/1646 useless extension candidates. Maximal degree in co-relation 9371. Up to 939 conditions per place. [2022-11-25 16:56:17,113 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 51 selfloop transitions, 43 changer transitions 13/113 dead transitions. [2022-11-25 16:56:17,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 1541 flow [2022-11-25 16:56:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:56:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:56:17,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2022-11-25 16:56:17,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4956896551724138 [2022-11-25 16:56:17,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2022-11-25 16:56:17,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2022-11-25 16:56:17,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:17,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2022-11-25 16:56:17,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,121 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 979 flow. Second operand 4 states and 460 transitions. [2022-11-25 16:56:17,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 1541 flow [2022-11-25 16:56:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 1471 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:17,149 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 1187 flow [2022-11-25 16:56:17,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1187, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2022-11-25 16:56:17,150 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2022-11-25 16:56:17,150 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 1187 flow [2022-11-25 16:56:17,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 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) [2022-11-25 16:56:17,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:17,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 16:56:17,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash 913096609, now seen corresponding path program 1 times [2022-11-25 16:56:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204147761] [2022-11-25 16:56:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:17,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204147761] [2022-11-25 16:56:17,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204147761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:17,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:17,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096141646] [2022-11-25 16:56:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:17,359 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:17,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 1187 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:17,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:17,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:17,819 INFO L130 PetriNetUnfolder]: 1088/1571 cut-off events. [2022-11-25 16:56:17,820 INFO L131 PetriNetUnfolder]: For 15404/15582 co-relation queries the response was YES. [2022-11-25 16:56:17,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 1571 events. 1088/1571 cut-off events. For 15404/15582 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6295 event pairs, 138 based on Foata normal form. 89/1625 useless extension candidates. Maximal degree in co-relation 10279. Up to 912 conditions per place. [2022-11-25 16:56:17,842 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 79 selfloop transitions, 49 changer transitions 0/132 dead transitions. [2022-11-25 16:56:17,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 132 transitions, 1867 flow [2022-11-25 16:56:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:56:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:56:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 780 transitions. [2022-11-25 16:56:17,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4802955665024631 [2022-11-25 16:56:17,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 780 transitions. [2022-11-25 16:56:17,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 780 transitions. [2022-11-25 16:56:17,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:17,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 780 transitions. [2022-11-25 16:56:17,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.42857142857143) internal successors, (780), 7 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,854 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,854 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 1187 flow. Second operand 7 states and 780 transitions. [2022-11-25 16:56:17,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 132 transitions, 1867 flow [2022-11-25 16:56:17,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 132 transitions, 1691 flow, removed 72 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:17,891 INFO L231 Difference]: Finished difference. Result has 74 places, 94 transitions, 1380 flow [2022-11-25 16:56:17,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1380, PETRI_PLACES=74, PETRI_TRANSITIONS=94} [2022-11-25 16:56:17,892 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2022-11-25 16:56:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 94 transitions, 1380 flow [2022-11-25 16:56:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:17,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:17,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:17,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 16:56:17,894 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1029974127, now seen corresponding path program 2 times [2022-11-25 16:56:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835413113] [2022-11-25 16:56:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:18,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835413113] [2022-11-25 16:56:18,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835413113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:18,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709096800] [2022-11-25 16:56:18,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:56:18,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:18,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:18,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:56:18,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:56:18,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:56:18,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:18,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:18,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709096800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:18,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:18,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-11-25 16:56:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800755048] [2022-11-25 16:56:18,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:56:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:56:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:56:18,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-11-25 16:56:18,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 94 transitions, 1380 flow. Second operand has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:18,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:18,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-11-25 16:56:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:19,191 INFO L130 PetriNetUnfolder]: 1336/1921 cut-off events. [2022-11-25 16:56:19,192 INFO L131 PetriNetUnfolder]: For 20219/20382 co-relation queries the response was YES. [2022-11-25 16:56:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 1921 events. 1336/1921 cut-off events. For 20219/20382 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8035 event pairs, 206 based on Foata normal form. 111/1991 useless extension candidates. Maximal degree in co-relation 12544. Up to 1041 conditions per place. [2022-11-25 16:56:19,220 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 104 selfloop transitions, 60 changer transitions 0/168 dead transitions. [2022-11-25 16:56:19,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 168 transitions, 2368 flow [2022-11-25 16:56:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 16:56:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 16:56:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2022-11-25 16:56:19,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47683189655172414 [2022-11-25 16:56:19,225 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2022-11-25 16:56:19,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2022-11-25 16:56:19,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:19,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2022-11-25 16:56:19,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:19,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:19,233 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:19,233 INFO L175 Difference]: Start difference. First operand has 74 places, 94 transitions, 1380 flow. Second operand 8 states and 885 transitions. [2022-11-25 16:56:19,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 168 transitions, 2368 flow [2022-11-25 16:56:19,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 168 transitions, 2248 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:19,289 INFO L231 Difference]: Finished difference. Result has 81 places, 110 transitions, 1686 flow [2022-11-25 16:56:19,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1686, PETRI_PLACES=81, PETRI_TRANSITIONS=110} [2022-11-25 16:56:19,290 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2022-11-25 16:56:19,291 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 110 transitions, 1686 flow [2022-11-25 16:56:19,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:19,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:19,292 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:19,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:19,500 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash 572023997, now seen corresponding path program 3 times [2022-11-25 16:56:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:19,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507075922] [2022-11-25 16:56:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507075922] [2022-11-25 16:56:19,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507075922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:19,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:19,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505803759] [2022-11-25 16:56:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:19,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2022-11-25 16:56:19,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 110 transitions, 1686 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:19,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:19,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2022-11-25 16:56:19,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:20,272 INFO L130 PetriNetUnfolder]: 1448/2093 cut-off events. [2022-11-25 16:56:20,273 INFO L131 PetriNetUnfolder]: For 23269/23382 co-relation queries the response was YES. [2022-11-25 16:56:20,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14104 conditions, 2093 events. 1448/2093 cut-off events. For 23269/23382 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8795 event pairs, 359 based on Foata normal form. 79/2152 useless extension candidates. Maximal degree in co-relation 14075. Up to 1379 conditions per place. [2022-11-25 16:56:20,303 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 111 selfloop transitions, 36 changer transitions 7/159 dead transitions. [2022-11-25 16:56:20,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 159 transitions, 2554 flow [2022-11-25 16:56:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:56:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-11-25 16:56:20,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47672413793103446 [2022-11-25 16:56:20,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-11-25 16:56:20,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-11-25 16:56:20,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:20,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-11-25 16:56:20,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:20,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:20,314 INFO L175 Difference]: Start difference. First operand has 81 places, 110 transitions, 1686 flow. Second operand 5 states and 553 transitions. [2022-11-25 16:56:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 159 transitions, 2554 flow [2022-11-25 16:56:20,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 159 transitions, 2436 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:20,381 INFO L231 Difference]: Finished difference. Result has 85 places, 127 transitions, 1999 flow [2022-11-25 16:56:20,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1999, PETRI_PLACES=85, PETRI_TRANSITIONS=127} [2022-11-25 16:56:20,382 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2022-11-25 16:56:20,382 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 127 transitions, 1999 flow [2022-11-25 16:56:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:20,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:20,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:20,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 16:56:20,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -569682959, now seen corresponding path program 4 times [2022-11-25 16:56:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:20,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618794140] [2022-11-25 16:56:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:20,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:20,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618794140] [2022-11-25 16:56:20,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618794140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:20,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:20,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:56:20,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057114383] [2022-11-25 16:56:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:20,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:56:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:56:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:56:20,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:20,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 127 transitions, 1999 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:20,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:20,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:21,171 INFO L130 PetriNetUnfolder]: 1337/1948 cut-off events. [2022-11-25 16:56:21,171 INFO L131 PetriNetUnfolder]: For 26001/26152 co-relation queries the response was YES. [2022-11-25 16:56:21,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 1948 events. 1337/1948 cut-off events. For 26001/26152 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8351 event pairs, 248 based on Foata normal form. 123/2022 useless extension candidates. Maximal degree in co-relation 13861. Up to 1104 conditions per place. [2022-11-25 16:56:21,196 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 109 selfloop transitions, 41 changer transitions 8/162 dead transitions. [2022-11-25 16:56:21,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 162 transitions, 2594 flow [2022-11-25 16:56:21,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:56:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:56:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 563 transitions. [2022-11-25 16:56:21,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4853448275862069 [2022-11-25 16:56:21,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 563 transitions. [2022-11-25 16:56:21,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 563 transitions. [2022-11-25 16:56:21,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:21,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 563 transitions. [2022-11-25 16:56:21,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:21,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:21,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:21,204 INFO L175 Difference]: Start difference. First operand has 85 places, 127 transitions, 1999 flow. Second operand 5 states and 563 transitions. [2022-11-25 16:56:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 162 transitions, 2594 flow [2022-11-25 16:56:21,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 162 transitions, 2539 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:21,271 INFO L231 Difference]: Finished difference. Result has 89 places, 128 transitions, 2122 flow [2022-11-25 16:56:21,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2122, PETRI_PLACES=89, PETRI_TRANSITIONS=128} [2022-11-25 16:56:21,272 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2022-11-25 16:56:21,272 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 128 transitions, 2122 flow [2022-11-25 16:56:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:21,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:21,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:21,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 16:56:21,273 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:21,274 INFO L85 PathProgramCache]: Analyzing trace with hash 632113467, now seen corresponding path program 5 times [2022-11-25 16:56:21,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:21,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974068341] [2022-11-25 16:56:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:21,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:21,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974068341] [2022-11-25 16:56:21,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974068341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:21,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703876705] [2022-11-25 16:56:21,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 16:56:21,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:21,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:21,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:21,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:56:21,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:56:21,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:21,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:56:21,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:21,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703876705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:21,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:21,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-25 16:56:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089000810] [2022-11-25 16:56:21,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:56:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:56:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:56:21,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 232 [2022-11-25 16:56:21,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 128 transitions, 2122 flow. Second operand has 9 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:21,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:21,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 232 [2022-11-25 16:56:21,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:22,523 INFO L130 PetriNetUnfolder]: 1403/2014 cut-off events. [2022-11-25 16:56:22,523 INFO L131 PetriNetUnfolder]: For 27629/27629 co-relation queries the response was YES. [2022-11-25 16:56:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15212 conditions, 2014 events. 1403/2014 cut-off events. For 27629/27629 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8180 event pairs, 290 based on Foata normal form. 44/2058 useless extension candidates. Maximal degree in co-relation 15178. Up to 1208 conditions per place. [2022-11-25 16:56:22,556 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 96 selfloop transitions, 94 changer transitions 2/192 dead transitions. [2022-11-25 16:56:22,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 192 transitions, 3193 flow [2022-11-25 16:56:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:22,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 973 transitions. [2022-11-25 16:56:22,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46599616858237547 [2022-11-25 16:56:22,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 973 transitions. [2022-11-25 16:56:22,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 973 transitions. [2022-11-25 16:56:22,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:22,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 973 transitions. [2022-11-25 16:56:22,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.11111111111111) internal successors, (973), 9 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:22,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:22,569 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:22,569 INFO L175 Difference]: Start difference. First operand has 89 places, 128 transitions, 2122 flow. Second operand 9 states and 973 transitions. [2022-11-25 16:56:22,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 192 transitions, 3193 flow [2022-11-25 16:56:22,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 192 transitions, 3096 flow, removed 26 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:22,658 INFO L231 Difference]: Finished difference. Result has 99 places, 155 transitions, 2796 flow [2022-11-25 16:56:22,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2796, PETRI_PLACES=99, PETRI_TRANSITIONS=155} [2022-11-25 16:56:22,659 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2022-11-25 16:56:22,659 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 155 transitions, 2796 flow [2022-11-25 16:56:22,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:22,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:22,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:22,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 16:56:22,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 16:56:22,872 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:22,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1524966575, now seen corresponding path program 1 times [2022-11-25 16:56:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:22,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557831673] [2022-11-25 16:56:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:23,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557831673] [2022-11-25 16:56:23,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557831673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:23,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844825044] [2022-11-25 16:56:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:23,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:23,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:23,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:23,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:56:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:23,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:23,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:23,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844825044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:23,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:23,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2022-11-25 16:56:23,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742210970] [2022-11-25 16:56:23,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:23,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:56:23,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:56:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:56:24,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:24,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 155 transitions, 2796 flow. Second operand has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:24,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:24,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:24,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:24,978 INFO L130 PetriNetUnfolder]: 1746/2486 cut-off events. [2022-11-25 16:56:24,978 INFO L131 PetriNetUnfolder]: For 36890/37609 co-relation queries the response was YES. [2022-11-25 16:56:24,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19096 conditions, 2486 events. 1746/2486 cut-off events. For 36890/37609 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10381 event pairs, 68 based on Foata normal form. 157/2477 useless extension candidates. Maximal degree in co-relation 19058. Up to 1809 conditions per place. [2022-11-25 16:56:25,020 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 158 selfloop transitions, 76 changer transitions 2/259 dead transitions. [2022-11-25 16:56:25,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 259 transitions, 4219 flow [2022-11-25 16:56:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1020 transitions. [2022-11-25 16:56:25,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4885057471264368 [2022-11-25 16:56:25,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1020 transitions. [2022-11-25 16:56:25,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1020 transitions. [2022-11-25 16:56:25,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:25,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1020 transitions. [2022-11-25 16:56:25,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.33333333333333) internal successors, (1020), 9 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:25,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:25,032 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:25,033 INFO L175 Difference]: Start difference. First operand has 99 places, 155 transitions, 2796 flow. Second operand 9 states and 1020 transitions. [2022-11-25 16:56:25,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 259 transitions, 4219 flow [2022-11-25 16:56:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 259 transitions, 3947 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-11-25 16:56:25,177 INFO L231 Difference]: Finished difference. Result has 107 places, 199 transitions, 3558 flow [2022-11-25 16:56:25,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3558, PETRI_PLACES=107, PETRI_TRANSITIONS=199} [2022-11-25 16:56:25,178 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2022-11-25 16:56:25,178 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 199 transitions, 3558 flow [2022-11-25 16:56:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.45454545454545) internal successors, (1171), 11 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:25,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:25,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:25,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 16:56:25,386 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1068116463, now seen corresponding path program 2 times [2022-11-25 16:56:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181842853] [2022-11-25 16:56:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181842853] [2022-11-25 16:56:25,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181842853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:25,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463329497] [2022-11-25 16:56:25,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:56:25,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:25,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:25,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:56:25,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:56:25,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:25,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:25,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:26,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:26,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463329497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:26,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:26,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-11-25 16:56:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061257782] [2022-11-25 16:56:26,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:26,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:56:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:56:26,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:56:26,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:26,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 199 transitions, 3558 flow. Second operand has 9 states, 9 states have (on average 106.33333333333333) internal successors, (957), 9 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:26,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:26,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:26,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:27,313 INFO L130 PetriNetUnfolder]: 2108/3016 cut-off events. [2022-11-25 16:56:27,314 INFO L131 PetriNetUnfolder]: For 40778/41398 co-relation queries the response was YES. [2022-11-25 16:56:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23329 conditions, 3016 events. 2108/3016 cut-off events. For 40778/41398 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13044 event pairs, 208 based on Foata normal form. 151/2989 useless extension candidates. Maximal degree in co-relation 23286. Up to 2353 conditions per place. [2022-11-25 16:56:27,368 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 173 selfloop transitions, 78 changer transitions 2/276 dead transitions. [2022-11-25 16:56:27,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 276 transitions, 4612 flow [2022-11-25 16:56:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1016 transitions. [2022-11-25 16:56:27,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48659003831417624 [2022-11-25 16:56:27,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1016 transitions. [2022-11-25 16:56:27,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1016 transitions. [2022-11-25 16:56:27,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:27,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1016 transitions. [2022-11-25 16:56:27,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.88888888888889) internal successors, (1016), 9 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:27,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:27,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:27,383 INFO L175 Difference]: Start difference. First operand has 107 places, 199 transitions, 3558 flow. Second operand 9 states and 1016 transitions. [2022-11-25 16:56:27,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 276 transitions, 4612 flow [2022-11-25 16:56:27,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 276 transitions, 4286 flow, removed 137 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:27,558 INFO L231 Difference]: Finished difference. Result has 116 places, 220 transitions, 3792 flow [2022-11-25 16:56:27,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3792, PETRI_PLACES=116, PETRI_TRANSITIONS=220} [2022-11-25 16:56:27,562 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2022-11-25 16:56:27,562 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 220 transitions, 3792 flow [2022-11-25 16:56:27,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.33333333333333) internal successors, (957), 9 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:27,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:27,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:27,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 16:56:27,770 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -38289475, now seen corresponding path program 3 times [2022-11-25 16:56:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:27,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928848251] [2022-11-25 16:56:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928848251] [2022-11-25 16:56:28,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928848251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325616289] [2022-11-25 16:56:28,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:56:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:28,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:56:28,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 16:56:28,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:28,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:28,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:28,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:28,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325616289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:28,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:28,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-25 16:56:28,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433438033] [2022-11-25 16:56:28,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:28,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:56:28,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:56:28,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:56:28,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:28,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 220 transitions, 3792 flow. Second operand has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:28,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:28,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:28,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:29,883 INFO L130 PetriNetUnfolder]: 2568/3682 cut-off events. [2022-11-25 16:56:29,884 INFO L131 PetriNetUnfolder]: For 50737/51451 co-relation queries the response was YES. [2022-11-25 16:56:29,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27288 conditions, 3682 events. 2568/3682 cut-off events. For 50737/51451 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 16599 event pairs, 386 based on Foata normal form. 193/3685 useless extension candidates. Maximal degree in co-relation 27242. Up to 3075 conditions per place. [2022-11-25 16:56:29,939 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 219 selfloop transitions, 68 changer transitions 2/312 dead transitions. [2022-11-25 16:56:29,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 312 transitions, 5208 flow [2022-11-25 16:56:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1016 transitions. [2022-11-25 16:56:29,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48659003831417624 [2022-11-25 16:56:29,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1016 transitions. [2022-11-25 16:56:29,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1016 transitions. [2022-11-25 16:56:29,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:29,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1016 transitions. [2022-11-25 16:56:29,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.88888888888889) internal successors, (1016), 9 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:29,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:29,950 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:29,950 INFO L175 Difference]: Start difference. First operand has 116 places, 220 transitions, 3792 flow. Second operand 9 states and 1016 transitions. [2022-11-25 16:56:29,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 312 transitions, 5208 flow [2022-11-25 16:56:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 312 transitions, 4924 flow, removed 108 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:30,147 INFO L231 Difference]: Finished difference. Result has 126 places, 256 transitions, 4373 flow [2022-11-25 16:56:30,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4373, PETRI_PLACES=126, PETRI_TRANSITIONS=256} [2022-11-25 16:56:30,148 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2022-11-25 16:56:30,148 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 256 transitions, 4373 flow [2022-11-25 16:56:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.0) internal successors, (1060), 10 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:30,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:30,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:30,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:30,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 16:56:30,356 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash -372744599, now seen corresponding path program 4 times [2022-11-25 16:56:30,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:30,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412730972] [2022-11-25 16:56:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:30,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:30,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:30,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412730972] [2022-11-25 16:56:30,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412730972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:30,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555196090] [2022-11-25 16:56:30,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:56:30,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:30,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:30,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:30,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:56:30,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:56:30,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:30,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:31,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:31,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555196090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:31,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:31,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-25 16:56:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838257642] [2022-11-25 16:56:31,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:31,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:56:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:31,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:56:31,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:56:31,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:31,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 256 transitions, 4373 flow. Second operand has 10 states, 10 states have (on average 106.7) internal successors, (1067), 10 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:31,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:31,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:31,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:32,707 INFO L130 PetriNetUnfolder]: 2876/4136 cut-off events. [2022-11-25 16:56:32,707 INFO L131 PetriNetUnfolder]: For 55174/55880 co-relation queries the response was YES. [2022-11-25 16:56:32,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30187 conditions, 4136 events. 2876/4136 cut-off events. For 55174/55880 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19113 event pairs, 522 based on Foata normal form. 187/4127 useless extension candidates. Maximal degree in co-relation 30136. Up to 3591 conditions per place. [2022-11-25 16:56:32,789 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 232 selfloop transitions, 68 changer transitions 2/325 dead transitions. [2022-11-25 16:56:32,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 325 transitions, 5551 flow [2022-11-25 16:56:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2022-11-25 16:56:32,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4837164750957854 [2022-11-25 16:56:32,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2022-11-25 16:56:32,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2022-11-25 16:56:32,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:32,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2022-11-25 16:56:32,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:32,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:32,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:32,802 INFO L175 Difference]: Start difference. First operand has 126 places, 256 transitions, 4373 flow. Second operand 9 states and 1010 transitions. [2022-11-25 16:56:32,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 325 transitions, 5551 flow [2022-11-25 16:56:33,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 325 transitions, 5229 flow, removed 145 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:33,045 INFO L231 Difference]: Finished difference. Result has 136 places, 275 transitions, 4604 flow [2022-11-25 16:56:33,045 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4604, PETRI_PLACES=136, PETRI_TRANSITIONS=275} [2022-11-25 16:56:33,046 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2022-11-25 16:56:33,046 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 275 transitions, 4604 flow [2022-11-25 16:56:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.7) internal successors, (1067), 10 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:33,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:33,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:33,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 16:56:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:33,254 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1366798793, now seen corresponding path program 5 times [2022-11-25 16:56:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:33,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513893147] [2022-11-25 16:56:33,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:33,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513893147] [2022-11-25 16:56:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513893147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870864188] [2022-11-25 16:56:33,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 16:56:33,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:33,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:33,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:33,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:56:33,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:56:33,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:33,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:33,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:33,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870864188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:34,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:34,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-25 16:56:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667546406] [2022-11-25 16:56:34,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:56:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:56:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:56:34,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:34,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 275 transitions, 4604 flow. Second operand has 10 states, 10 states have (on average 106.6) internal successors, (1066), 10 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:34,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:34,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:35,630 INFO L130 PetriNetUnfolder]: 3352/4824 cut-off events. [2022-11-25 16:56:35,630 INFO L131 PetriNetUnfolder]: For 64951/65732 co-relation queries the response was YES. [2022-11-25 16:56:35,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34833 conditions, 4824 events. 3352/4824 cut-off events. For 64951/65732 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23011 event pairs, 662 based on Foata normal form. 207/4809 useless extension candidates. Maximal degree in co-relation 34778. Up to 4191 conditions per place. [2022-11-25 16:56:35,719 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 268 selfloop transitions, 75 changer transitions 2/368 dead transitions. [2022-11-25 16:56:35,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 368 transitions, 6345 flow [2022-11-25 16:56:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1010 transitions. [2022-11-25 16:56:35,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4837164750957854 [2022-11-25 16:56:35,722 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1010 transitions. [2022-11-25 16:56:35,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1010 transitions. [2022-11-25 16:56:35,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:35,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1010 transitions. [2022-11-25 16:56:35,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:35,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:35,729 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:35,729 INFO L175 Difference]: Start difference. First operand has 136 places, 275 transitions, 4604 flow. Second operand 9 states and 1010 transitions. [2022-11-25 16:56:35,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 368 transitions, 6345 flow [2022-11-25 16:56:35,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 368 transitions, 6031 flow, removed 128 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:35,987 INFO L231 Difference]: Finished difference. Result has 146 places, 318 transitions, 5406 flow [2022-11-25 16:56:35,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5406, PETRI_PLACES=146, PETRI_TRANSITIONS=318} [2022-11-25 16:56:35,988 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2022-11-25 16:56:35,988 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 318 transitions, 5406 flow [2022-11-25 16:56:35,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.6) internal successors, (1066), 10 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:35,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:35,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:36,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 16:56:36,197 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -194139665, now seen corresponding path program 6 times [2022-11-25 16:56:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:36,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746412679] [2022-11-25 16:56:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746412679] [2022-11-25 16:56:36,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746412679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:36,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770449204] [2022-11-25 16:56:36,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 16:56:36,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:36,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:36,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:36,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:56:36,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-25 16:56:36,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:36,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 16:56:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:36,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770449204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:37,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:37,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2022-11-25 16:56:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196989874] [2022-11-25 16:56:37,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:56:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:56:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:56:37,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:37,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 318 transitions, 5406 flow. Second operand has 10 states, 10 states have (on average 106.6) internal successors, (1066), 10 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:37,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:37,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:38,759 INFO L130 PetriNetUnfolder]: 3660/5276 cut-off events. [2022-11-25 16:56:38,759 INFO L131 PetriNetUnfolder]: For 73881/74668 co-relation queries the response was YES. [2022-11-25 16:56:38,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38056 conditions, 5276 events. 3660/5276 cut-off events. For 73881/74668 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 25604 event pairs, 806 based on Foata normal form. 207/5257 useless extension candidates. Maximal degree in co-relation 37996. Up to 4731 conditions per place. [2022-11-25 16:56:38,839 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 287 selfloop transitions, 73 changer transitions 2/385 dead transitions. [2022-11-25 16:56:38,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 385 transitions, 6789 flow [2022-11-25 16:56:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:56:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 16:56:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1008 transitions. [2022-11-25 16:56:38,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2022-11-25 16:56:38,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1008 transitions. [2022-11-25 16:56:38,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1008 transitions. [2022-11-25 16:56:38,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:38,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1008 transitions. [2022-11-25 16:56:38,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:38,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:38,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 232.0) internal successors, (2320), 10 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:38,851 INFO L175 Difference]: Start difference. First operand has 146 places, 318 transitions, 5406 flow. Second operand 9 states and 1008 transitions. [2022-11-25 16:56:38,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 385 transitions, 6789 flow [2022-11-25 16:56:39,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 385 transitions, 6357 flow, removed 200 selfloop flow, removed 1 redundant places. [2022-11-25 16:56:39,105 INFO L231 Difference]: Finished difference. Result has 156 places, 337 transitions, 5610 flow [2022-11-25 16:56:39,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5610, PETRI_PLACES=156, PETRI_TRANSITIONS=337} [2022-11-25 16:56:39,106 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2022-11-25 16:56:39,106 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 337 transitions, 5610 flow [2022-11-25 16:56:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.6) internal successors, (1066), 10 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:39,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:39,107 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:39,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:39,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 16:56:39,314 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:39,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash -919224948, now seen corresponding path program 7 times [2022-11-25 16:56:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:39,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824102968] [2022-11-25 16:56:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:39,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:39,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824102968] [2022-11-25 16:56:39,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824102968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:39,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261229996] [2022-11-25 16:56:39,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 16:56:39,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:39,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:39,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:39,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:56:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:39,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:56:39,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:39,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:39,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261229996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:39,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:39,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-11-25 16:56:39,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317387223] [2022-11-25 16:56:39,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:56:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:56:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:56:40,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:40,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 337 transitions, 5610 flow. Second operand has 12 states, 12 states have (on average 105.83333333333333) internal successors, (1270), 12 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:40,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:40,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:40,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:43,216 INFO L130 PetriNetUnfolder]: 6754/9864 cut-off events. [2022-11-25 16:56:43,217 INFO L131 PetriNetUnfolder]: For 125293/125676 co-relation queries the response was YES. [2022-11-25 16:56:43,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66240 conditions, 9864 events. 6754/9864 cut-off events. For 125293/125676 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52241 event pairs, 1182 based on Foata normal form. 194/9966 useless extension candidates. Maximal degree in co-relation 66176. Up to 2745 conditions per place. [2022-11-25 16:56:43,333 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 446 selfloop transitions, 137 changer transitions 0/592 dead transitions. [2022-11-25 16:56:43,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 592 transitions, 10140 flow [2022-11-25 16:56:43,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 16:56:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 16:56:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1140 transitions. [2022-11-25 16:56:43,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2022-11-25 16:56:43,350 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1140 transitions. [2022-11-25 16:56:43,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1140 transitions. [2022-11-25 16:56:43,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:43,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1140 transitions. [2022-11-25 16:56:43,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:43,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:43,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:43,360 INFO L175 Difference]: Start difference. First operand has 156 places, 337 transitions, 5610 flow. Second operand 10 states and 1140 transitions. [2022-11-25 16:56:43,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 592 transitions, 10140 flow [2022-11-25 16:56:43,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 592 transitions, 9408 flow, removed 333 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:43,872 INFO L231 Difference]: Finished difference. Result has 170 places, 392 transitions, 6557 flow [2022-11-25 16:56:43,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6557, PETRI_PLACES=170, PETRI_TRANSITIONS=392} [2022-11-25 16:56:43,874 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2022-11-25 16:56:43,874 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 392 transitions, 6557 flow [2022-11-25 16:56:43,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 105.83333333333333) internal successors, (1270), 12 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:43,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:43,875 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:43,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:44,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 16:56:44,082 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash 391959449, now seen corresponding path program 8 times [2022-11-25 16:56:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:44,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743108661] [2022-11-25 16:56:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:44,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:44,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:44,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743108661] [2022-11-25 16:56:44,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743108661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:44,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867234232] [2022-11-25 16:56:44,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:56:44,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:44,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:44,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:44,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 16:56:44,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:56:44,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:44,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:56:44,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:44,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:44,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867234232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:44,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:44,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-11-25 16:56:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599483695] [2022-11-25 16:56:44,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:56:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:56:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:56:44,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2022-11-25 16:56:44,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 392 transitions, 6557 flow. Second operand has 12 states, 12 states have (on average 104.58333333333333) internal successors, (1255), 12 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:44,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:44,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2022-11-25 16:56:44,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:48,772 INFO L130 PetriNetUnfolder]: 7301/10853 cut-off events. [2022-11-25 16:56:48,773 INFO L131 PetriNetUnfolder]: For 169704/170286 co-relation queries the response was YES. [2022-11-25 16:56:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73208 conditions, 10853 events. 7301/10853 cut-off events. For 169704/170286 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61639 event pairs, 1177 based on Foata normal form. 405/11196 useless extension candidates. Maximal degree in co-relation 73136. Up to 4039 conditions per place. [2022-11-25 16:56:48,921 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 602 selfloop transitions, 191 changer transitions 0/802 dead transitions. [2022-11-25 16:56:48,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 802 transitions, 13432 flow [2022-11-25 16:56:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:56:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:56:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1348 transitions. [2022-11-25 16:56:48,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48419540229885055 [2022-11-25 16:56:48,924 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1348 transitions. [2022-11-25 16:56:48,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1348 transitions. [2022-11-25 16:56:48,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:48,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1348 transitions. [2022-11-25 16:56:48,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 112.33333333333333) internal successors, (1348), 12 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:48,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:48,934 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:48,934 INFO L175 Difference]: Start difference. First operand has 170 places, 392 transitions, 6557 flow. Second operand 12 states and 1348 transitions. [2022-11-25 16:56:48,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 802 transitions, 13432 flow [2022-11-25 16:56:49,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 802 transitions, 13311 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-25 16:56:49,717 INFO L231 Difference]: Finished difference. Result has 185 places, 495 transitions, 8928 flow [2022-11-25 16:56:49,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8928, PETRI_PLACES=185, PETRI_TRANSITIONS=495} [2022-11-25 16:56:49,718 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2022-11-25 16:56:49,718 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 495 transitions, 8928 flow [2022-11-25 16:56:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 104.58333333333333) internal successors, (1255), 12 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:49,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:49,718 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:49,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-25 16:56:49,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:49,919 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1206409463, now seen corresponding path program 9 times [2022-11-25 16:56:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:49,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764890573] [2022-11-25 16:56:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:50,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764890573] [2022-11-25 16:56:50,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764890573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136225375] [2022-11-25 16:56:50,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:56:50,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:50,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:50,151 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:50,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 16:56:50,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 16:56:50,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:50,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:56:50,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:50,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:50,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136225375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:50,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:50,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-25 16:56:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352423298] [2022-11-25 16:56:50,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:50,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 16:56:50,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:50,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 16:56:50,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:56:50,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 232 [2022-11-25 16:56:50,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 495 transitions, 8928 flow. Second operand has 13 states, 13 states have (on average 102.61538461538461) internal successors, (1334), 13 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:50,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:50,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 232 [2022-11-25 16:56:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:56:56,275 INFO L130 PetriNetUnfolder]: 9861/14690 cut-off events. [2022-11-25 16:56:56,275 INFO L131 PetriNetUnfolder]: For 243334/243334 co-relation queries the response was YES. [2022-11-25 16:56:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111940 conditions, 14690 events. 9861/14690 cut-off events. For 243334/243334 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 86206 event pairs, 1391 based on Foata normal form. 136/14826 useless extension candidates. Maximal degree in co-relation 111862. Up to 4101 conditions per place. [2022-11-25 16:56:56,550 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 496 selfloop transitions, 376 changer transitions 0/872 dead transitions. [2022-11-25 16:56:56,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 872 transitions, 16771 flow [2022-11-25 16:56:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 16:56:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-25 16:56:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2092 transitions. [2022-11-25 16:56:56,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4745916515426497 [2022-11-25 16:56:56,558 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2092 transitions. [2022-11-25 16:56:56,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2092 transitions. [2022-11-25 16:56:56,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:56:56,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2092 transitions. [2022-11-25 16:56:56,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 110.10526315789474) internal successors, (2092), 19 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:56,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 232.0) internal successors, (4640), 20 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) [2022-11-25 16:56:56,575 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 232.0) internal successors, (4640), 20 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) [2022-11-25 16:56:56,575 INFO L175 Difference]: Start difference. First operand has 185 places, 495 transitions, 8928 flow. Second operand 19 states and 2092 transitions. [2022-11-25 16:56:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 872 transitions, 16771 flow [2022-11-25 16:56:58,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 872 transitions, 16157 flow, removed 307 selfloop flow, removed 0 redundant places. [2022-11-25 16:56:58,957 INFO L231 Difference]: Finished difference. Result has 215 places, 630 transitions, 12747 flow [2022-11-25 16:56:58,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8628, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12747, PETRI_PLACES=215, PETRI_TRANSITIONS=630} [2022-11-25 16:56:58,958 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2022-11-25 16:56:58,959 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 630 transitions, 12747 flow [2022-11-25 16:56:58,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 102.61538461538461) internal successors, (1334), 13 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:58,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:58,960 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:56:58,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 16:56:59,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:59,167 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:56:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1971352637, now seen corresponding path program 10 times [2022-11-25 16:56:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:59,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969416142] [2022-11-25 16:56:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:59,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:59,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:59,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969416142] [2022-11-25 16:56:59,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969416142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:56:59,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281137004] [2022-11-25 16:56:59,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:56:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:56:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:56:59,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:56:59,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 16:56:59,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:56:59,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:56:59,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:56:59,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:56:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:59,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:56:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:56:59,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281137004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:56:59,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:56:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-25 16:56:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855850254] [2022-11-25 16:56:59,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:56:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 16:56:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 16:56:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:57:00,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2022-11-25 16:57:00,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 630 transitions, 12747 flow. Second operand has 16 states, 16 states have (on average 100.875) internal successors, (1614), 16 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:00,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:00,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2022-11-25 16:57:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:09,600 INFO L130 PetriNetUnfolder]: 12899/19224 cut-off events. [2022-11-25 16:57:09,601 INFO L131 PetriNetUnfolder]: For 462914/462914 co-relation queries the response was YES. [2022-11-25 16:57:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173187 conditions, 19224 events. 12899/19224 cut-off events. For 462914/462914 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 119574 event pairs, 763 based on Foata normal form. 548/19772 useless extension candidates. Maximal degree in co-relation 173096. Up to 6149 conditions per place. [2022-11-25 16:57:10,234 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 901 selfloop transitions, 798 changer transitions 67/1766 dead transitions. [2022-11-25 16:57:10,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1766 transitions, 39808 flow [2022-11-25 16:57:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-25 16:57:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-25 16:57:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5396 transitions. [2022-11-25 16:57:10,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45605138607167006 [2022-11-25 16:57:10,263 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 5396 transitions. [2022-11-25 16:57:10,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 5396 transitions. [2022-11-25 16:57:10,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:10,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 5396 transitions. [2022-11-25 16:57:10,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 105.80392156862744) internal successors, (5396), 51 states have internal predecessors, (5396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:10,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 232.0) internal successors, (12064), 52 states have internal predecessors, (12064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:10,296 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 232.0) internal successors, (12064), 52 states have internal predecessors, (12064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:10,296 INFO L175 Difference]: Start difference. First operand has 215 places, 630 transitions, 12747 flow. Second operand 51 states and 5396 transitions. [2022-11-25 16:57:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 1766 transitions, 39808 flow [2022-11-25 16:57:14,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1766 transitions, 37586 flow, removed 652 selfloop flow, removed 3 redundant places. [2022-11-25 16:57:14,580 INFO L231 Difference]: Finished difference. Result has 293 places, 1122 transitions, 26057 flow [2022-11-25 16:57:14,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=11544, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=26057, PETRI_PLACES=293, PETRI_TRANSITIONS=1122} [2022-11-25 16:57:14,581 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2022-11-25 16:57:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 1122 transitions, 26057 flow [2022-11-25 16:57:14,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 100.875) internal successors, (1614), 16 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:14,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:14,582 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:57:14,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 16:57:14,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:14,783 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:57:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -898431689, now seen corresponding path program 11 times [2022-11-25 16:57:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195210824] [2022-11-25 16:57:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195210824] [2022-11-25 16:57:15,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195210824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572207799] [2022-11-25 16:57:15,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 16:57:15,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:15,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:15,007 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:15,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 16:57:15,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:57:15,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:57:15,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:57:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:15,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:57:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:15,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572207799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:57:15,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:57:15,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-25 16:57:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367609297] [2022-11-25 16:57:15,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:57:15,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 16:57:15,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 16:57:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:57:15,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2022-11-25 16:57:15,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 1122 transitions, 26057 flow. Second operand has 17 states, 17 states have (on average 100.88235294117646) internal successors, (1715), 17 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:15,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:15,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2022-11-25 16:57:15,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:57:33,406 INFO L130 PetriNetUnfolder]: 14142/21456 cut-off events. [2022-11-25 16:57:33,406 INFO L131 PetriNetUnfolder]: For 740995/740995 co-relation queries the response was YES. [2022-11-25 16:57:33,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214191 conditions, 21456 events. 14142/21456 cut-off events. For 740995/740995 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 140131 event pairs, 1045 based on Foata normal form. 490/21946 useless extension candidates. Maximal degree in co-relation 214069. Up to 7413 conditions per place. [2022-11-25 16:57:34,051 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 1135 selfloop transitions, 1143 changer transitions 67/2345 dead transitions. [2022-11-25 16:57:34,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2345 transitions, 52380 flow [2022-11-25 16:57:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-25 16:57:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2022-11-25 16:57:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 11371 transitions. [2022-11-25 16:57:34,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45806477602320333 [2022-11-25 16:57:34,070 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 11371 transitions. [2022-11-25 16:57:34,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 11371 transitions. [2022-11-25 16:57:34,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:57:34,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 11371 transitions. [2022-11-25 16:57:34,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 106.27102803738318) internal successors, (11371), 107 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:34,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 232.0) internal successors, (25056), 108 states have internal predecessors, (25056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:34,129 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 232.0) internal successors, (25056), 108 states have internal predecessors, (25056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:34,129 INFO L175 Difference]: Start difference. First operand has 293 places, 1122 transitions, 26057 flow. Second operand 107 states and 11371 transitions. [2022-11-25 16:57:34,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2345 transitions, 52380 flow [2022-11-25 16:57:49,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 2345 transitions, 45915 flow, removed 2895 selfloop flow, removed 5 redundant places. [2022-11-25 16:57:50,021 INFO L231 Difference]: Finished difference. Result has 445 places, 1468 transitions, 34760 flow [2022-11-25 16:57:50,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=22796, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=34760, PETRI_PLACES=445, PETRI_TRANSITIONS=1468} [2022-11-25 16:57:50,023 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2022-11-25 16:57:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 1468 transitions, 34760 flow [2022-11-25 16:57:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 100.88235294117646) internal successors, (1715), 17 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:50,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:57:50,024 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:57:50,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 16:57:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:50,224 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-25 16:57:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:57:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 620583500, now seen corresponding path program 12 times [2022-11-25 16:57:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:57:50,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218732312] [2022-11-25 16:57:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:57:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:57:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:57:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:57:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:57:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218732312] [2022-11-25 16:57:50,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218732312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:57:50,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271309282] [2022-11-25 16:57:50,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 16:57:50,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:57:50,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:57:50,451 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:57:50,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16167d45-550d-4a29-99ca-68f08f1045dc/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 16:57:50,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-25 16:57:50,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:57:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 16:57:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:57:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:50,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:57:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:57:50,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271309282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:57:50,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:57:50,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-11-25 16:57:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809188166] [2022-11-25 16:57:50,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:57:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:57:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:57:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:57:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:57:51,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2022-11-25 16:57:51,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1468 transitions, 34760 flow. Second operand has 15 states, 15 states have (on average 101.13333333333334) internal successors, (1517), 15 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:57:51,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:57:51,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2022-11-25 16:57:51,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand