./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 ebf6aadb7b83b59f90765b7cb8b0362853c5f80603629c3d563bbb938a6df3b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:23,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:24,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:53:24,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:24,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:24,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:24,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:24,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:24,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:24,106 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:24,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:24,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:24,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:24,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:24,113 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:24,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:24,114 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:24,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:24,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:24,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:24,116 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:24,121 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:24,121 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:24,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:24,122 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:24,123 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:24,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:24,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:24,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:24,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:24,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:24,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:24,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:24,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:24,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:24,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:24,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:24,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:24,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:24,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:24,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:24,132 INFO L153 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_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebf6aadb7b83b59f90765b7cb8b0362853c5f80603629c3d563bbb938a6df3b1 [2023-11-24 21:53:24,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:24,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:24,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:24,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:24,524 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:24,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:28,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:28,424 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:28,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:28,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/6712ef13e/220910d4a9534171939adfc395af81a3/FLAGf3de63cd2 [2023-11-24 21:53:28,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/6712ef13e/220910d4a9534171939adfc395af81a3 [2023-11-24 21:53:28,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:28,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:28,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:28,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:28,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:28,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:28" (1/1) ... [2023-11-24 21:53:28,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b18df43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:28, skipping insertion in model container [2023-11-24 21:53:28,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:28" (1/1) ... [2023-11-24 21:53:28,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:29,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:29,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:29,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:29,305 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:29,305 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:29,313 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:29,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29 WrapperNode [2023-11-24 21:53:29,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:29,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:29,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:29,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:29,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,383 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 133 [2023-11-24 21:53:29,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:29,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:29,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:29,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:29,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,442 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:53:29,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:29,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:29,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:29,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:29,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (1/1) ... [2023-11-24 21:53:29,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:29,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:29,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:53:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:53:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:53:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:53:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:53:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:53:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:53:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:53:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:53:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:53:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:53:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:53:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:53:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:53:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:53:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:53:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:53:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:29,623 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:53:29,913 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:29,916 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:30,529 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:30,862 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:30,863 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:53:30,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:30 BoogieIcfgContainer [2023-11-24 21:53:30,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:30,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:30,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:30,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:30,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:28" (1/3) ... [2023-11-24 21:53:30,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593c555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:30, skipping insertion in model container [2023-11-24 21:53:30,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:29" (2/3) ... [2023-11-24 21:53:30,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593c555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:30, skipping insertion in model container [2023-11-24 21:53:30,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:30" (3/3) ... [2023-11-24 21:53:30,876 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:30,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:30,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-24 21:53:30,902 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:53:31,028 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:53:31,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:53:31,213 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-24 21:53:31,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:53:31,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-24 21:53:31,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:53:31,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 50 transitions, 109 flow [2023-11-24 21:53:31,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:31,262 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;@52786250, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:31,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:53:31,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:53:31,270 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:53:31,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:53:31,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:53:31,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:31,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash 12627, now seen corresponding path program 1 times [2023-11-24 21:53:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014186751] [2023-11-24 21:53:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014186751] [2023-11-24 21:53:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014186751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:31,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267608394] [2023-11-24 21:53:31,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:31,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:31,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:31,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:31,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:31,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:31,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:31,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:31,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:32,556 INFO L124 PetriNetUnfolderBase]: 1057/2038 cut-off events. [2023-11-24 21:53:32,557 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 21:53:32,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3664 conditions, 2038 events. 1057/2038 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13860 event pairs, 791 based on Foata normal form. 120/1956 useless extension candidates. Maximal degree in co-relation 3650. Up to 1193 conditions per place. [2023-11-24 21:53:32,589 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-24 21:53:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 183 flow [2023-11-24 21:53:32,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:53:32,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2023-11-24 21:53:32,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:53:32,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:53:32,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:32,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:53:32,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:32,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:32,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:32,624 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 109 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:53:32,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 183 flow [2023-11-24 21:53:32,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:53:32,634 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-24 21:53:32,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-24 21:53:32,641 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-24 21:53:32,642 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-24 21:53:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:32,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:32,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:53:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:53:32,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 12628, now seen corresponding path program 1 times [2023-11-24 21:53:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416338575] [2023-11-24 21:53:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:32,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416338575] [2023-11-24 21:53:32,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416338575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:32,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176984402] [2023-11-24 21:53:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:32,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:32,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:53:32,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:32,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:32,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:53:32,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:33,465 INFO L124 PetriNetUnfolderBase]: 1057/2037 cut-off events. [2023-11-24 21:53:33,466 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 21:53:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 2037 events. 1057/2037 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13781 event pairs, 791 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 3710. Up to 1192 conditions per place. [2023-11-24 21:53:33,492 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 29 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-24 21:53:33,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 180 flow [2023-11-24 21:53:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:53:33,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2023-11-24 21:53:33,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:53:33,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:53:33,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:33,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:53:33,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:33,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:33,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:33,508 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:53:33,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 180 flow [2023-11-24 21:53:33,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:33,515 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 21:53:33,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 21:53:33,516 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-11-24 21:53:33,517 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 21:53:33,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:33,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:33,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:33,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:53:33,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:33,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash 376543019, now seen corresponding path program 1 times [2023-11-24 21:53:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503756335] [2023-11-24 21:53:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:33,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503756335] [2023-11-24 21:53:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503756335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088679940] [2023-11-24 21:53:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:33,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:33,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:33,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:33,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:33,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:34,119 INFO L124 PetriNetUnfolderBase]: 1061/2036 cut-off events. [2023-11-24 21:53:34,119 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 21:53:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 2036 events. 1061/2036 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14011 event pairs, 571 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 3718. Up to 1195 conditions per place. [2023-11-24 21:53:34,141 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-24 21:53:34,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 180 flow [2023-11-24 21:53:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2023-11-24 21:53:34,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2023-11-24 21:53:34,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2023-11-24 21:53:34,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2023-11-24 21:53:34,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:34,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2023-11-24 21:53:34,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,151 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 111 transitions. [2023-11-24 21:53:34,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 180 flow [2023-11-24 21:53:34,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:34,157 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 21:53:34,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 21:53:34,158 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2023-11-24 21:53:34,159 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 21:53:34,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:34,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:53:34,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:34,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash 376543020, now seen corresponding path program 1 times [2023-11-24 21:53:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634662321] [2023-11-24 21:53:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:34,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:34,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:34,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634662321] [2023-11-24 21:53:34,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634662321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:34,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:34,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638037336] [2023-11-24 21:53:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:34,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:34,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:34,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:53:34,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:34,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:53:34,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:34,791 INFO L124 PetriNetUnfolderBase]: 1057/2003 cut-off events. [2023-11-24 21:53:34,791 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-24 21:53:34,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 2003 events. 1057/2003 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13852 event pairs, 811 based on Foata normal form. 5/1820 useless extension candidates. Maximal degree in co-relation 3681. Up to 1186 conditions per place. [2023-11-24 21:53:34,818 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 29 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-24 21:53:34,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 176 flow [2023-11-24 21:53:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:53:34,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2023-11-24 21:53:34,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:53:34,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:53:34,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:34,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:53:34,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,827 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:53:34,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 176 flow [2023-11-24 21:53:34,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:34,832 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 21:53:34,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 21:53:34,835 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-11-24 21:53:34,835 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 21:53:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:34,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:34,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:34,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:53:34,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 376544614, now seen corresponding path program 1 times [2023-11-24 21:53:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85785219] [2023-11-24 21:53:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:35,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:35,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85785219] [2023-11-24 21:53:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85785219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289019670] [2023-11-24 21:53:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:35,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2023-11-24 21:53:35,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:35,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2023-11-24 21:53:35,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:35,455 INFO L124 PetriNetUnfolderBase]: 825/1457 cut-off events. [2023-11-24 21:53:35,456 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 21:53:35,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 1457 events. 825/1457 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8655 event pairs, 457 based on Foata normal form. 0/1438 useless extension candidates. Maximal degree in co-relation 2778. Up to 1009 conditions per place. [2023-11-24 21:53:35,473 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 33 selfloop transitions, 2 changer transitions 2/58 dead transitions. [2023-11-24 21:53:35,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 208 flow [2023-11-24 21:53:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-24 21:53:35,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7672955974842768 [2023-11-24 21:53:35,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-24 21:53:35,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-24 21:53:35,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:35,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-24 21:53:35,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,480 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 122 transitions. [2023-11-24 21:53:35,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 208 flow [2023-11-24 21:53:35,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:35,485 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 92 flow [2023-11-24 21:53:35,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-24 21:53:35,489 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-24 21:53:35,489 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 92 flow [2023-11-24 21:53:35,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:35,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:53:35,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:35,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -861126667, now seen corresponding path program 1 times [2023-11-24 21:53:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387376521] [2023-11-24 21:53:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:35,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:35,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:35,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387376521] [2023-11-24 21:53:35,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387376521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:35,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:35,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784516538] [2023-11-24 21:53:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:35,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:35,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:35,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:36,007 INFO L124 PetriNetUnfolderBase]: 738/1435 cut-off events. [2023-11-24 21:53:36,008 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-24 21:53:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 1435 events. 738/1435 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9266 event pairs, 428 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 2676. Up to 934 conditions per place. [2023-11-24 21:53:36,022 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 27 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-24 21:53:36,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 166 flow [2023-11-24 21:53:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-24 21:53:36,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2023-11-24 21:53:36,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-24 21:53:36,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-24 21:53:36,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:36,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-24 21:53:36,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,027 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 92 flow. Second operand 3 states and 108 transitions. [2023-11-24 21:53:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 166 flow [2023-11-24 21:53:36,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:36,031 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-24 21:53:36,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-24 21:53:36,034 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-24 21:53:36,035 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-24 21:53:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:36,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:36,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:53:36,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:36,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash -861126666, now seen corresponding path program 1 times [2023-11-24 21:53:36,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:36,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106831948] [2023-11-24 21:53:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:36,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:36,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:36,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106831948] [2023-11-24 21:53:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106831948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:36,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:36,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:36,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918942183] [2023-11-24 21:53:36,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:36,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:36,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:53:36,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:36,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:53:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:36,457 INFO L124 PetriNetUnfolderBase]: 721/1406 cut-off events. [2023-11-24 21:53:36,457 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 21:53:36,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 1406 events. 721/1406 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9017 event pairs, 420 based on Foata normal form. 12/1379 useless extension candidates. Maximal degree in co-relation 2583. Up to 905 conditions per place. [2023-11-24 21:53:36,470 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:53:36,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 160 flow [2023-11-24 21:53:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-24 21:53:36,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2023-11-24 21:53:36,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-24 21:53:36,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-24 21:53:36,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:36,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-24 21:53:36,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,475 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 110 transitions. [2023-11-24 21:53:36,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 160 flow [2023-11-24 21:53:36,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:36,477 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-24 21:53:36,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-24 21:53:36,478 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -10 predicate places. [2023-11-24 21:53:36,479 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-24 21:53:36,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:36,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:36,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:53:36,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:36,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1755324443, now seen corresponding path program 1 times [2023-11-24 21:53:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:36,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957937968] [2023-11-24 21:53:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:36,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957937968] [2023-11-24 21:53:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957937968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611932236] [2023-11-24 21:53:36,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:36,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:53:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:53:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:37,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:53:37,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:37,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:53:37,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:37,480 INFO L124 PetriNetUnfolderBase]: 724/1385 cut-off events. [2023-11-24 21:53:37,480 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 21:53:37,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 1385 events. 724/1385 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8763 event pairs, 192 based on Foata normal form. 48/1391 useless extension candidates. Maximal degree in co-relation 2569. Up to 905 conditions per place. [2023-11-24 21:53:37,497 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 25 selfloop transitions, 3 changer transitions 9/54 dead transitions. [2023-11-24 21:53:37,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 192 flow [2023-11-24 21:53:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:37,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:53:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-24 21:53:37,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723270440251572 [2023-11-24 21:53:37,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-24 21:53:37,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-24 21:53:37,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:37,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-24 21:53:37,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,504 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 6 states and 182 transitions. [2023-11-24 21:53:37,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 192 flow [2023-11-24 21:53:37,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:37,508 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 86 flow [2023-11-24 21:53:37,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-24 21:53:37,509 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-24 21:53:37,509 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 86 flow [2023-11-24 21:53:37,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:37,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:37,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:53:37,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:37,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:37,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1755325858, now seen corresponding path program 1 times [2023-11-24 21:53:37,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:37,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680246897] [2023-11-24 21:53:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:37,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:37,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680246897] [2023-11-24 21:53:37,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680246897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:37,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409219702] [2023-11-24 21:53:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:37,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2023-11-24 21:53:37,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:37,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:37,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2023-11-24 21:53:37,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:39,085 INFO L124 PetriNetUnfolderBase]: 3718/6046 cut-off events. [2023-11-24 21:53:39,086 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-24 21:53:39,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11688 conditions, 6046 events. 3718/6046 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 40719 event pairs, 838 based on Foata normal form. 0/5868 useless extension candidates. Maximal degree in co-relation 11677. Up to 2366 conditions per place. [2023-11-24 21:53:39,128 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 36 selfloop transitions, 5 changer transitions 71/125 dead transitions. [2023-11-24 21:53:39,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 125 transitions, 490 flow [2023-11-24 21:53:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:53:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:53:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 321 transitions. [2023-11-24 21:53:39,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2023-11-24 21:53:39,132 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 321 transitions. [2023-11-24 21:53:39,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 321 transitions. [2023-11-24 21:53:39,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:39,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 321 transitions. [2023-11-24 21:53:39,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.666666666666664) internal successors, (321), 9 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:39,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:53:39,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:53:39,136 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 86 flow. Second operand 9 states and 321 transitions. [2023-11-24 21:53:39,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 125 transitions, 490 flow [2023-11-24 21:53:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 125 transitions, 484 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:53:39,140 INFO L231 Difference]: Finished difference. Result has 61 places, 40 transitions, 149 flow [2023-11-24 21:53:39,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=61, PETRI_TRANSITIONS=40} [2023-11-24 21:53:39,142 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-24 21:53:39,142 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 40 transitions, 149 flow [2023-11-24 21:53:39,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:39,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:39,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:39,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:53:39,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:39,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash -193374783, now seen corresponding path program 1 times [2023-11-24 21:53:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935094234] [2023-11-24 21:53:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935094234] [2023-11-24 21:53:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935094234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:39,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:39,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243248745] [2023-11-24 21:53:39,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:39,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:39,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:39,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:53:39,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 40 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:39,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:39,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:53:39,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:40,498 INFO L124 PetriNetUnfolderBase]: 3595/6033 cut-off events. [2023-11-24 21:53:40,498 INFO L125 PetriNetUnfolderBase]: For 3987/4227 co-relation queries the response was YES. [2023-11-24 21:53:40,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14010 conditions, 6033 events. 3595/6033 cut-off events. For 3987/4227 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 40058 event pairs, 621 based on Foata normal form. 290/6181 useless extension candidates. Maximal degree in co-relation 13991. Up to 3138 conditions per place. [2023-11-24 21:53:40,567 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2023-11-24 21:53:40,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 334 flow [2023-11-24 21:53:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:53:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2023-11-24 21:53:40,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6886792452830188 [2023-11-24 21:53:40,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2023-11-24 21:53:40,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2023-11-24 21:53:40,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:40,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2023-11-24 21:53:40,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:40,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:40,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:40,572 INFO L175 Difference]: Start difference. First operand has 61 places, 40 transitions, 149 flow. Second operand 4 states and 146 transitions. [2023-11-24 21:53:40,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 334 flow [2023-11-24 21:53:40,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 304 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-24 21:53:40,601 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 165 flow [2023-11-24 21:53:40,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-11-24 21:53:40,604 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-24 21:53:40,605 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 165 flow [2023-11-24 21:53:40,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:40,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:40,605 INFO L208 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, 1] [2023-11-24 21:53:40,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:53:40,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:40,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash 454614692, now seen corresponding path program 1 times [2023-11-24 21:53:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:40,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185814229] [2023-11-24 21:53:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:40,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:40,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:40,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185814229] [2023-11-24 21:53:40,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185814229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:40,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:40,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:40,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822989518] [2023-11-24 21:53:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:40,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:53:40,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:40,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:40,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:53:40,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:41,718 INFO L124 PetriNetUnfolderBase]: 2468/4144 cut-off events. [2023-11-24 21:53:41,718 INFO L125 PetriNetUnfolderBase]: For 2184/2288 co-relation queries the response was YES. [2023-11-24 21:53:41,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10515 conditions, 4144 events. 2468/4144 cut-off events. For 2184/2288 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 25547 event pairs, 373 based on Foata normal form. 204/4229 useless extension candidates. Maximal degree in co-relation 10496. Up to 1212 conditions per place. [2023-11-24 21:53:41,761 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 59 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2023-11-24 21:53:41,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 424 flow [2023-11-24 21:53:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:53:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2023-11-24 21:53:41,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2023-11-24 21:53:41,764 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 185 transitions. [2023-11-24 21:53:41,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 185 transitions. [2023-11-24 21:53:41,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:41,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 185 transitions. [2023-11-24 21:53:41,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:41,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:41,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:41,768 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 165 flow. Second operand 5 states and 185 transitions. [2023-11-24 21:53:41,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 424 flow [2023-11-24 21:53:41,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 417 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 21:53:41,773 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 213 flow [2023-11-24 21:53:41,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-24 21:53:41,775 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-24 21:53:41,775 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 213 flow [2023-11-24 21:53:41,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:41,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:41,776 INFO L208 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, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:41,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:53:41,776 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:41,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1192463705, now seen corresponding path program 1 times [2023-11-24 21:53:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471275262] [2023-11-24 21:53:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:41,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:42,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:42,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471275262] [2023-11-24 21:53:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471275262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:42,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:42,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94562424] [2023-11-24 21:53:42,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:42,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:53:42,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:53:42,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:53:42,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:53:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:42,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:53:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:42,807 INFO L124 PetriNetUnfolderBase]: 1948/3220 cut-off events. [2023-11-24 21:53:42,807 INFO L125 PetriNetUnfolderBase]: For 4297/4401 co-relation queries the response was YES. [2023-11-24 21:53:42,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9362 conditions, 3220 events. 1948/3220 cut-off events. For 4297/4401 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19103 event pairs, 339 based on Foata normal form. 92/3197 useless extension candidates. Maximal degree in co-relation 9342. Up to 1212 conditions per place. [2023-11-24 21:53:42,832 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 11 changer transitions 1/79 dead transitions. [2023-11-24 21:53:42,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 430 flow [2023-11-24 21:53:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:53:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:53:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2023-11-24 21:53:42,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2023-11-24 21:53:42,834 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 206 transitions. [2023-11-24 21:53:42,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 206 transitions. [2023-11-24 21:53:42,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:42,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 206 transitions. [2023-11-24 21:53:42,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:42,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:42,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:42,837 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 213 flow. Second operand 6 states and 206 transitions. [2023-11-24 21:53:42,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 430 flow [2023-11-24 21:53:42,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 409 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:42,844 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 237 flow [2023-11-24 21:53:42,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2023-11-24 21:53:42,845 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-11-24 21:53:42,845 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 237 flow [2023-11-24 21:53:42,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:42,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:42,845 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:42,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:53:42,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:42,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1402095033, now seen corresponding path program 1 times [2023-11-24 21:53:42,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401037343] [2023-11-24 21:53:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401037343] [2023-11-24 21:53:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401037343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:53:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165921214] [2023-11-24 21:53:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:43,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:53:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:43,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:53:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:53:43,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:43,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 27.88888888888889) internal successors, (251), 9 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:43,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:43,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:44,666 INFO L124 PetriNetUnfolderBase]: 1190/2390 cut-off events. [2023-11-24 21:53:44,666 INFO L125 PetriNetUnfolderBase]: For 3997/4473 co-relation queries the response was YES. [2023-11-24 21:53:44,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 2390 events. 1190/2390 cut-off events. For 3997/4473 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17183 event pairs, 229 based on Foata normal form. 39/2163 useless extension candidates. Maximal degree in co-relation 6534. Up to 841 conditions per place. [2023-11-24 21:53:44,690 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 36 selfloop transitions, 4 changer transitions 23/91 dead transitions. [2023-11-24 21:53:44,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 487 flow [2023-11-24 21:53:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:53:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:53:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2023-11-24 21:53:44,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6184486373165619 [2023-11-24 21:53:44,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2023-11-24 21:53:44,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2023-11-24 21:53:44,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:44,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2023-11-24 21:53:44,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:44,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:53:44,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:53:44,697 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 237 flow. Second operand 9 states and 295 transitions. [2023-11-24 21:53:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 487 flow [2023-11-24 21:53:44,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 447 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-24 21:53:44,720 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 225 flow [2023-11-24 21:53:44,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-11-24 21:53:44,722 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-11-24 21:53:44,722 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 225 flow [2023-11-24 21:53:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.88888888888889) internal successors, (251), 9 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:44,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:44,723 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:44,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:53:44,723 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:44,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 140851763, now seen corresponding path program 2 times [2023-11-24 21:53:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:44,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60982628] [2023-11-24 21:53:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:44,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:53:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:53:44,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:53:44,950 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:53:44,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 21:53:44,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-11-24 21:53:44,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 21:53:44,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 21:53:44,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 21:53:44,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 21:53:44,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 21:53:44,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-24 21:53:44,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-24 21:53:44,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-24 21:53:44,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-24 21:53:44,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-24 21:53:44,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-24 21:53:44,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:53:44,957 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:44,965 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:53:44,965 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:53:45,037 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-24 21:53:45,039 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-24 21:53:45,040 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-24 21:53:45,053 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-24 21:53:45,054 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-24 21:53:45,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:53:45 BasicIcfg [2023-11-24 21:53:45,066 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:53:45,067 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:53:45,067 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:53:45,067 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:53:45,068 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:30" (3/4) ... [2023-11-24 21:53:45,069 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:53:45,071 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:53:45,071 INFO L158 Benchmark]: Toolchain (without parser) took 16585.40ms. Allocated memory was 138.4MB in the beginning and 417.3MB in the end (delta: 278.9MB). Free memory was 79.4MB in the beginning and 175.7MB in the end (delta: -96.3MB). Peak memory consumption was 184.5MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,072 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory was 103.9MB in the beginning and 103.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:45,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 823.59ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 79.2MB in the beginning and 170.3MB in the end (delta: -91.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.98ms. Allocated memory is still 209.7MB. Free memory was 170.3MB in the beginning and 168.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,073 INFO L158 Benchmark]: Boogie Preprocessor took 111.63ms. Allocated memory is still 209.7MB. Free memory was 168.1MB in the beginning and 164.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,074 INFO L158 Benchmark]: RCFGBuilder took 1364.32ms. Allocated memory is still 209.7MB. Free memory was 164.0MB in the beginning and 116.9MB in the end (delta: 47.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,074 INFO L158 Benchmark]: TraceAbstraction took 14198.58ms. Allocated memory was 209.7MB in the beginning and 417.3MB in the end (delta: 207.6MB). Free memory was 115.8MB in the beginning and 175.7MB in the end (delta: -59.9MB). Peak memory consumption was 146.6MB. Max. memory is 16.1GB. [2023-11-24 21:53:45,074 INFO L158 Benchmark]: Witness Printer took 4.07ms. Allocated memory is still 417.3MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:45,077 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 138.4MB. Free memory was 103.9MB in the beginning and 103.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 823.59ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 79.2MB in the beginning and 170.3MB in the end (delta: -91.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.98ms. Allocated memory is still 209.7MB. Free memory was 170.3MB in the beginning and 168.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 111.63ms. Allocated memory is still 209.7MB. Free memory was 168.1MB in the beginning and 164.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1364.32ms. Allocated memory is still 209.7MB. Free memory was 164.0MB in the beginning and 116.9MB in the end (delta: 47.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 14198.58ms. Allocated memory was 209.7MB in the beginning and 417.3MB in the end (delta: 207.6MB). Free memory was 115.8MB in the beginning and 175.7MB in the end (delta: -59.9MB). Peak memory consumption was 146.6MB. Max. memory is 16.1GB. * Witness Printer took 4.07ms. Allocated memory is still 417.3MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 17. Possible FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L721] 0 int z = 0; [L722] 0 _Bool z$flush_delayed; [L723] 0 int z$mem_tmp; [L724] 0 _Bool z$r_buff0_thd0; [L725] 0 _Bool z$r_buff0_thd1; [L726] 0 _Bool z$r_buff0_thd2; [L727] 0 _Bool z$r_buff0_thd3; [L728] 0 _Bool z$r_buff1_thd0; [L729] 0 _Bool z$r_buff1_thd1; [L730] 0 _Bool z$r_buff1_thd2; [L731] 0 _Bool z$r_buff1_thd3; [L732] 0 _Bool z$read_delayed; [L733] 0 int *z$read_delayed_var; [L734] 0 int z$w_buff0; [L735] 0 _Bool z$w_buff0_used; [L736] 0 int z$w_buff1; [L737] 0 _Bool z$w_buff1_used; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L833] 0 pthread_t t1385; [L834] FCALL, FORK 0 pthread_create(&t1385, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1385={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L835] 0 pthread_t t1386; [L836] FCALL, FORK 0 pthread_create(&t1386, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1385={5:0}, t1386={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L837] 0 pthread_t t1387; [L838] FCALL, FORK 0 pthread_create(&t1387, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1385={5:0}, t1386={6:0}, t1387={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L743] 1 z$w_buff1 = z$w_buff0 [L744] 1 z$w_buff0 = 1 [L745] 1 z$w_buff1_used = z$w_buff0_used [L746] 1 z$w_buff0_used = (_Bool)1 [L747] CALL 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L747] RET 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L748] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L749] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L750] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L751] 1 z$r_buff1_thd3 = z$r_buff0_thd3 [L752] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L772] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L775] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L778] 2 z = z$w_buff0_used && z$r_buff0_thd2 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd2 ? z$w_buff1 : z) [L779] 2 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$w_buff0_used [L780] 2 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$w_buff1_used [L781] 2 z$r_buff0_thd2 = z$w_buff0_used && z$r_buff0_thd2 ? (_Bool)0 : z$r_buff0_thd2 [L782] 2 z$r_buff1_thd2 = z$w_buff0_used && z$r_buff0_thd2 || z$w_buff1_used && z$r_buff1_thd2 ? (_Bool)0 : z$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L792] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L795] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L796] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L797] 3 z$flush_delayed = weak$$choice2 [L798] 3 z$mem_tmp = z [L799] 3 z = !z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff1) [L800] 3 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff0)) [L801] 3 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff1 : z$w_buff1)) [L802] 3 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used)) [L803] 3 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L804] 3 z$r_buff0_thd3 = weak$$choice2 ? z$r_buff0_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff0_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3)) [L805] 3 z$r_buff1_thd3 = weak$$choice2 ? z$r_buff1_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff1_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L806] 3 __unbuffered_p2_EAX = z [L807] 3 z = z$flush_delayed ? z$mem_tmp : z [L808] 3 z$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L811] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L812] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L813] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L814] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L815] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L758] 1 z = z$w_buff0_used && z$r_buff0_thd1 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd1 ? z$w_buff1 : z) [L759] 1 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$w_buff0_used [L760] 1 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$w_buff1_used [L761] 1 z$r_buff0_thd1 = z$w_buff0_used && z$r_buff0_thd1 ? (_Bool)0 : z$r_buff0_thd1 [L762] 1 z$r_buff1_thd1 = z$w_buff0_used && z$r_buff0_thd1 || z$w_buff1_used && z$r_buff1_thd1 ? (_Bool)0 : z$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L765] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L785] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L818] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L840] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1385={5:0}, t1386={6:0}, t1387={3:0}, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L842] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L842] RET 0 assume_abort_if_not(main$tmp_guard0) [L844] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L845] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L846] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L847] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L848] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1385={5:0}, t1386={6:0}, t1387={3:0}, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L851] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0) VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1385={5:0}, t1386={6:0}, t1387={3:0}, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L853] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] [L17] 0 __assert_fail ("0", "mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=1] - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 831]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 77 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 579 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1343 IncrementalHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 30 mSDtfsCounter, 1343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=12, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:53:45,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 ebf6aadb7b83b59f90765b7cb8b0362853c5f80603629c3d563bbb938a6df3b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:48,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:48,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:53:48,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:48,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:48,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:48,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:48,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:48,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:48,220 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:48,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:48,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:48,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:48,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:48,225 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:48,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:48,226 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:48,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:48,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:48,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:48,228 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:48,228 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:48,229 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:48,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:48,229 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:48,230 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:53:48,230 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:53:48,231 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:48,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:48,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:48,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:48,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:48,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:48,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:48,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:48,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:48,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:48,237 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:53:48,237 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:53:48,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:48,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:48,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:48,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:48,239 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:53:48,239 INFO L153 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_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebf6aadb7b83b59f90765b7cb8b0362853c5f80603629c3d563bbb938a6df3b1 [2023-11-24 21:53:48,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:48,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:48,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:48,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:48,687 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:48,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:52,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:52,500 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:52,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/sv-benchmarks/c/pthread-wmm/mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:52,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/b5dcf3731/0e5f31094fd74690b845f709e9bda9ad/FLAG25d62447a [2023-11-24 21:53:52,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/data/b5dcf3731/0e5f31094fd74690b845f709e9bda9ad [2023-11-24 21:53:52,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:52,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:52,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:52,567 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:52,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:52,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:52" (1/1) ... [2023-11-24 21:53:52,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fb3fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:52, skipping insertion in model container [2023-11-24 21:53:52,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:52" (1/1) ... [2023-11-24 21:53:52,667 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:53,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:53,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:53,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:53,450 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:53,450 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:53,459 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:53,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53 WrapperNode [2023-11-24 21:53:53,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:53,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:53,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:53,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:53,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,519 INFO L138 Inliner]: procedures = 179, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 134 [2023-11-24 21:53:53,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:53,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:53,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:53,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:53,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,562 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:53:53,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:53,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:53,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:53,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:53,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (1/1) ... [2023-11-24 21:53:53,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:53,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:53,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:53,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:53:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:53:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:53:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:53:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:53:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:53:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:53:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:53:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:53:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:53:53,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:53:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:53:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:53,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:53,700 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:53:53,876 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:53,879 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:54,384 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:54,648 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:54,648 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:53:54,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:54 BoogieIcfgContainer [2023-11-24 21:53:54,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:54,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:54,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:54,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:54,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:52" (1/3) ... [2023-11-24 21:53:54,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301e6e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:54, skipping insertion in model container [2023-11-24 21:53:54,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:53" (2/3) ... [2023-11-24 21:53:54,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301e6e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:54, skipping insertion in model container [2023-11-24 21:53:54,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:54" (3/3) ... [2023-11-24 21:53:54,660 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-11-24 21:53:54,683 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:54,683 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-24 21:53:54,684 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:53:54,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:53:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:53:54,869 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-24 21:53:54,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:53:54,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-24 21:53:54,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:53:54,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 50 transitions, 109 flow [2023-11-24 21:53:54,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:54,906 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;@2a185c59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:54,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:53:54,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:53:54,911 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:53:54,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:53:54,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:54,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:53:54,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:54,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 12691, now seen corresponding path program 1 times [2023-11-24 21:53:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056140706] [2023-11-24 21:53:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:54,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:54,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:54,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:53:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:55,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:53:55,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:55,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:53:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:55,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:55,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056140706] [2023-11-24 21:53:55,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056140706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:55,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90800130] [2023-11-24 21:53:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:55,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:55,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:55,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:55,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:55,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:55,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:56,127 INFO L124 PetriNetUnfolderBase]: 1057/2038 cut-off events. [2023-11-24 21:53:56,127 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 21:53:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3664 conditions, 2038 events. 1057/2038 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13738 event pairs, 791 based on Foata normal form. 120/1957 useless extension candidates. Maximal degree in co-relation 3650. Up to 1193 conditions per place. [2023-11-24 21:53:56,159 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-24 21:53:56,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 183 flow [2023-11-24 21:53:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:53:56,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2023-11-24 21:53:56,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:53:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:53:56,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:56,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:53:56,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:56,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:56,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:56,192 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 109 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:53:56,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 183 flow [2023-11-24 21:53:56,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:53:56,204 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-24 21:53:56,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-24 21:53:56,212 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-24 21:53:56,212 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-24 21:53:56,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:56,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:56,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:53:56,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:56,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:56,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 12692, now seen corresponding path program 1 times [2023-11-24 21:53:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428723192] [2023-11-24 21:53:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:56,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:56,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:56,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:53:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:56,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:56,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:56,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:53:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:56,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:56,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428723192] [2023-11-24 21:53:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428723192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:56,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767896396] [2023-11-24 21:53:56,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:56,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:56,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:53:56,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:56,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:56,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:53:56,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:57,158 INFO L124 PetriNetUnfolderBase]: 1057/2037 cut-off events. [2023-11-24 21:53:57,159 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 21:53:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 2037 events. 1057/2037 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13738 event pairs, 791 based on Foata normal form. 1/1837 useless extension candidates. Maximal degree in co-relation 3710. Up to 1192 conditions per place. [2023-11-24 21:53:57,184 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 29 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-24 21:53:57,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 180 flow [2023-11-24 21:53:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-24 21:53:57,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2023-11-24 21:53:57,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-24 21:53:57,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-24 21:53:57,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:57,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-24 21:53:57,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,206 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 113 transitions. [2023-11-24 21:53:57,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 180 flow [2023-11-24 21:53:57,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:57,215 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 21:53:57,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 21:53:57,217 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-11-24 21:53:57,217 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 21:53:57,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:57,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:57,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 21:53:57,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:57,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:57,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 378455146, now seen corresponding path program 1 times [2023-11-24 21:53:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:57,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663005165] [2023-11-24 21:53:57,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:57,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:57,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:57,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:53:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:57,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:53:57,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:57,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:57,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663005165] [2023-11-24 21:53:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663005165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:57,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:53:57,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845161488] [2023-11-24 21:53:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:57,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:57,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2023-11-24 21:53:57,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:57,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2023-11-24 21:53:57,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:57,946 INFO L124 PetriNetUnfolderBase]: 825/1540 cut-off events. [2023-11-24 21:53:57,946 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-24 21:53:57,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1540 events. 825/1540 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10077 event pairs, 129 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 2857. Up to 1009 conditions per place. [2023-11-24 21:53:57,961 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 33 selfloop transitions, 2 changer transitions 2/60 dead transitions. [2023-11-24 21:53:57,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 210 flow [2023-11-24 21:53:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-24 21:53:57,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7672955974842768 [2023-11-24 21:53:57,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-24 21:53:57,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-24 21:53:57,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:57,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-24 21:53:57,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,968 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 122 transitions. [2023-11-24 21:53:57,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 210 flow [2023-11-24 21:53:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:57,971 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 96 flow [2023-11-24 21:53:57,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2023-11-24 21:53:57,972 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2023-11-24 21:53:57,973 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 96 flow [2023-11-24 21:53:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:57,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:57,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:57,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:58,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:58,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash 378453551, now seen corresponding path program 1 times [2023-11-24 21:53:58,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:58,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232804172] [2023-11-24 21:53:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:58,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:58,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:53:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:58,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:53:58,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:58,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:53:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:58,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:58,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232804172] [2023-11-24 21:53:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232804172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:58,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:58,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658033088] [2023-11-24 21:53:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:58,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:58,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:58,692 INFO L124 PetriNetUnfolderBase]: 724/1440 cut-off events. [2023-11-24 21:53:58,693 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-24 21:53:58,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 1440 events. 724/1440 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9458 event pairs, 550 based on Foata normal form. 0/1371 useless extension candidates. Maximal degree in co-relation 2657. Up to 940 conditions per place. [2023-11-24 21:53:58,706 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 27 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-24 21:53:58,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 170 flow [2023-11-24 21:53:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-24 21:53:58,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2023-11-24 21:53:58,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-24 21:53:58,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-24 21:53:58,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:58,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-24 21:53:58,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,711 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 96 flow. Second operand 3 states and 108 transitions. [2023-11-24 21:53:58,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 170 flow [2023-11-24 21:53:58,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:58,714 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 21:53:58,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 21:53:58,715 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-24 21:53:58,715 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 21:53:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:58,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:53:58,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-24 21:53:58,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:58,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:58,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash 378453552, now seen corresponding path program 1 times [2023-11-24 21:53:58,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:58,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826962287] [2023-11-24 21:53:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:58,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:58,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:58,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:53:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:59,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:59,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:53:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:59,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826962287] [2023-11-24 21:53:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826962287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595456354] [2023-11-24 21:53:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:59,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:53:59,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:59,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:53:59,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:53:59,398 INFO L124 PetriNetUnfolderBase]: 721/1432 cut-off events. [2023-11-24 21:53:59,399 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 21:53:59,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611 conditions, 1432 events. 721/1432 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9455 event pairs, 548 based on Foata normal form. 4/1367 useless extension candidates. Maximal degree in co-relation 2601. Up to 933 conditions per place. [2023-11-24 21:53:59,413 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-24 21:53:59,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 164 flow [2023-11-24 21:53:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:53:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-24 21:53:59,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2023-11-24 21:53:59,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-24 21:53:59,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-24 21:53:59,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:53:59,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-24 21:53:59,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,418 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 110 transitions. [2023-11-24 21:53:59,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 164 flow [2023-11-24 21:53:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:53:59,421 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-24 21:53:59,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-24 21:53:59,423 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-24 21:53:59,423 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-24 21:53:59,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:53:59,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:59,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:59,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:59,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:53:59,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 220961205, now seen corresponding path program 1 times [2023-11-24 21:53:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9263061] [2023-11-24 21:53:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:59,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:53:59,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:53:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:53:59,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:59,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:53:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:59,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9263061] [2023-11-24 21:53:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9263061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567923940] [2023-11-24 21:53:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:59,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:59,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:59,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:59,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2023-11-24 21:53:59,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:53:59,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2023-11-24 21:53:59,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:00,132 INFO L124 PetriNetUnfolderBase]: 738/1435 cut-off events. [2023-11-24 21:54:00,132 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 21:54:00,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 1435 events. 738/1435 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9198 event pairs, 428 based on Foata normal form. 0/1389 useless extension candidates. Maximal degree in co-relation 2633. Up to 934 conditions per place. [2023-11-24 21:54:00,176 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 27 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-24 21:54:00,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 164 flow [2023-11-24 21:54:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:54:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-24 21:54:00,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2023-11-24 21:54:00,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-24 21:54:00,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-24 21:54:00,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:00,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-24 21:54:00,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,184 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 108 transitions. [2023-11-24 21:54:00,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 164 flow [2023-11-24 21:54:00,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:00,188 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-24 21:54:00,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-24 21:54:00,192 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-24 21:54:00,192 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-24 21:54:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:00,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:00,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 21:54:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:00,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:00,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash 220961206, now seen corresponding path program 1 times [2023-11-24 21:54:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183207640] [2023-11-24 21:54:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:00,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:54:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:00,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:00,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:54:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:00,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183207640] [2023-11-24 21:54:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183207640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387702559] [2023-11-24 21:54:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:00,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:00,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:54:00,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:00,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:54:00,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:00,932 INFO L124 PetriNetUnfolderBase]: 721/1426 cut-off events. [2023-11-24 21:54:00,932 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 21:54:00,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 1426 events. 721/1426 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9204 event pairs, 260 based on Foata normal form. 12/1396 useless extension candidates. Maximal degree in co-relation 2603. Up to 905 conditions per place. [2023-11-24 21:54:00,946 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:54:00,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 160 flow [2023-11-24 21:54:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:54:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-24 21:54:00,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2023-11-24 21:54:00,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-24 21:54:00,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-24 21:54:00,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:00,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-24 21:54:00,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,952 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 110 transitions. [2023-11-24 21:54:00,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 160 flow [2023-11-24 21:54:00,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:00,954 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-24 21:54:00,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-24 21:54:00,956 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -10 predicate places. [2023-11-24 21:54:00,956 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-24 21:54:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:00,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:00,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:01,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:01,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:01,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash 18212511, now seen corresponding path program 1 times [2023-11-24 21:54:01,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:01,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493101049] [2023-11-24 21:54:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:01,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:01,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:01,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:01,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:54:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:01,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:01,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:01,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:01,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493101049] [2023-11-24 21:54:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493101049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:01,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:01,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261682212] [2023-11-24 21:54:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:01,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:54:01,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:54:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:02,032 INFO L124 PetriNetUnfolderBase]: 1680/2966 cut-off events. [2023-11-24 21:54:02,032 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-24 21:54:02,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 2966 events. 1680/2966 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19297 event pairs, 188 based on Foata normal form. 100/3035 useless extension candidates. Maximal degree in co-relation 5636. Up to 1579 conditions per place. [2023-11-24 21:54:02,063 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 43 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2023-11-24 21:54:02,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 242 flow [2023-11-24 21:54:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:54:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2023-11-24 21:54:02,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6933962264150944 [2023-11-24 21:54:02,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2023-11-24 21:54:02,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2023-11-24 21:54:02,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:02,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2023-11-24 21:54:02,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,070 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 4 states and 147 transitions. [2023-11-24 21:54:02,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 242 flow [2023-11-24 21:54:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:02,077 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 118 flow [2023-11-24 21:54:02,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-24 21:54:02,081 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-11-24 21:54:02,081 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 118 flow [2023-11-24 21:54:02,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:02,082 INFO L208 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, 1] [2023-11-24 21:54:02,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:02,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:02,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:02,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:02,286 INFO L85 PathProgramCache]: Analyzing trace with hash -586212230, now seen corresponding path program 1 times [2023-11-24 21:54:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:02,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118537091] [2023-11-24 21:54:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:02,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:02,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:02,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:02,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:54:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:02,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:02,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:02,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118537091] [2023-11-24 21:54:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118537091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685176913] [2023-11-24 21:54:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:02,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:54:02,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:54:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:02,962 INFO L124 PetriNetUnfolderBase]: 1038/1844 cut-off events. [2023-11-24 21:54:02,963 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2023-11-24 21:54:02,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 1844 events. 1038/1844 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10470 event pairs, 100 based on Foata normal form. 82/1906 useless extension candidates. Maximal degree in co-relation 4064. Up to 697 conditions per place. [2023-11-24 21:54:02,977 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 8 changer transitions 1/78 dead transitions. [2023-11-24 21:54:02,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 337 flow [2023-11-24 21:54:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:54:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2023-11-24 21:54:02,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2023-11-24 21:54:02,982 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 185 transitions. [2023-11-24 21:54:02,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 185 transitions. [2023-11-24 21:54:02,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:02,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 185 transitions. [2023-11-24 21:54:02,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,985 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 118 flow. Second operand 5 states and 185 transitions. [2023-11-24 21:54:02,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 337 flow [2023-11-24 21:54:02,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 327 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:02,989 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 158 flow [2023-11-24 21:54:02,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-24 21:54:02,991 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-24 21:54:02,991 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 158 flow [2023-11-24 21:54:02,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:02,992 INFO L208 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, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:03,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:03,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2144168732, now seen corresponding path program 1 times [2023-11-24 21:54:03,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:03,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679277542] [2023-11-24 21:54:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:03,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:03,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:03,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:54:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:03,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:54:03,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:03,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:03,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679277542] [2023-11-24 21:54:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679277542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:03,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:03,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153892417] [2023-11-24 21:54:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:03,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:54:03,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:54:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:03,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2023-11-24 21:54:03,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:03,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2023-11-24 21:54:03,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:03,809 INFO L124 PetriNetUnfolderBase]: 581/993 cut-off events. [2023-11-24 21:54:03,809 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2023-11-24 21:54:03,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 993 events. 581/993 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4578 event pairs, 83 based on Foata normal form. 40/1013 useless extension candidates. Maximal degree in co-relation 2512. Up to 308 conditions per place. [2023-11-24 21:54:03,817 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 47 selfloop transitions, 11 changer transitions 1/74 dead transitions. [2023-11-24 21:54:03,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 344 flow [2023-11-24 21:54:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:54:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:54:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-24 21:54:03,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6446540880503144 [2023-11-24 21:54:03,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-24 21:54:03,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-24 21:54:03,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:03,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-24 21:54:03,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,823 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 158 flow. Second operand 6 states and 205 transitions. [2023-11-24 21:54:03,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 344 flow [2023-11-24 21:54:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 319 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 21:54:03,829 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 172 flow [2023-11-24 21:54:03,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-24 21:54:03,830 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-11-24 21:54:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 172 flow [2023-11-24 21:54:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:03,831 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:04,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:04,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:04,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash 60781168, now seen corresponding path program 1 times [2023-11-24 21:54:04,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:04,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711294825] [2023-11-24 21:54:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:04,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:04,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:54:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,894 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t1385~0#1.base_41| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#t1387~0#1.base_41| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#t1386~0#1.base_41| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t1385~0#1.base_41| (_ bv1 1)))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t1385~0#1.base_41|) (_ bv0 1)) (= (select .cse0 |v_ULTIMATE.start_main_~#t1386~0#1.base_41|) (_ bv0 1)) (= (select (store .cse0 |v_ULTIMATE.start_main_~#t1386~0#1.base_41| (_ bv1 1)) |v_ULTIMATE.start_main_~#t1387~0#1.base_41|) (_ bv0 1)) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t1385~0#1.base_41| (_ bv0 1)) |v_ULTIMATE.start_main_~#t1386~0#1.base_41| (_ bv0 1)) |v_ULTIMATE.start_main_~#t1387~0#1.base_41| (_ bv0 1)))))) is different from true [2023-11-24 21:54:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711294825] [2023-11-24 21:54:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711294825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414203621] [2023-11-24 21:54:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:54:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:54:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-24 21:54:04,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2023-11-24 21:54:04,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:04,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2023-11-24 21:54:04,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:05,255 INFO L124 PetriNetUnfolderBase]: 340/683 cut-off events. [2023-11-24 21:54:05,256 INFO L125 PetriNetUnfolderBase]: For 264/276 co-relation queries the response was YES. [2023-11-24 21:54:05,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 683 events. 340/683 cut-off events. For 264/276 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3353 event pairs, 70 based on Foata normal form. 8/660 useless extension candidates. Maximal degree in co-relation 1516. Up to 458 conditions per place. [2023-11-24 21:54:05,268 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 31 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-24 21:54:05,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 276 flow [2023-11-24 21:54:05,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:54:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:54:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-24 21:54:05,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2023-11-24 21:54:05,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-24 21:54:05,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-24 21:54:05,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:05,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-24 21:54:05,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,273 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,273 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 172 flow. Second operand 6 states and 147 transitions. [2023-11-24 21:54:05,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 276 flow [2023-11-24 21:54:05,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 220 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-24 21:54:05,278 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 148 flow [2023-11-24 21:54:05,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-24 21:54:05,279 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2023-11-24 21:54:05,279 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 148 flow [2023-11-24 21:54:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:05,279 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:05,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:05,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:05,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:05,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1363422827, now seen corresponding path program 1 times [2023-11-24 21:54:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119354403] [2023-11-24 21:54:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:05,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:05,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:54:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:05,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:54:05,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:05,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:05,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119354403] [2023-11-24 21:54:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119354403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:05,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:05,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666620082] [2023-11-24 21:54:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:05,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:05,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2023-11-24 21:54:05,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:05,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2023-11-24 21:54:05,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:06,080 INFO L124 PetriNetUnfolderBase]: 770/1444 cut-off events. [2023-11-24 21:54:06,081 INFO L125 PetriNetUnfolderBase]: For 419/459 co-relation queries the response was YES. [2023-11-24 21:54:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1444 events. 770/1444 cut-off events. For 419/459 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8085 event pairs, 339 based on Foata normal form. 8/1376 useless extension candidates. Maximal degree in co-relation 3368. Up to 657 conditions per place. [2023-11-24 21:54:06,093 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 48 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2023-11-24 21:54:06,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 346 flow [2023-11-24 21:54:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:54:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-24 21:54:06,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6528301886792452 [2023-11-24 21:54:06,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-24 21:54:06,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-24 21:54:06,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:06,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-24 21:54:06,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,098 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,098 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 148 flow. Second operand 5 states and 173 transitions. [2023-11-24 21:54:06,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 346 flow [2023-11-24 21:54:06,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:54:06,102 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 176 flow [2023-11-24 21:54:06,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-24 21:54:06,103 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-24 21:54:06,103 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 176 flow [2023-11-24 21:54:06,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:06,104 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:06,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:06,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:06,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:06,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash -974749291, now seen corresponding path program 2 times [2023-11-24 21:54:06,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:06,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097178622] [2023-11-24 21:54:06,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:54:06,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:06,312 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:06,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:54:06,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 21:54:06,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:06,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:54:06,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:07,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:07,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097178622] [2023-11-24 21:54:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097178622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:54:07,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909361763] [2023-11-24 21:54:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:54:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:54:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:54:07,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:54:07,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 176 flow. Second operand has 9 states, 9 states have (on average 28.88888888888889) internal successors, (260), 9 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:07,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:07,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:54:07,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:08,002 INFO L124 PetriNetUnfolderBase]: 920/1779 cut-off events. [2023-11-24 21:54:08,003 INFO L125 PetriNetUnfolderBase]: For 700/778 co-relation queries the response was YES. [2023-11-24 21:54:08,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4412 conditions, 1779 events. 920/1779 cut-off events. For 700/778 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10672 event pairs, 154 based on Foata normal form. 8/1696 useless extension candidates. Maximal degree in co-relation 4397. Up to 711 conditions per place. [2023-11-24 21:54:08,021 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 62 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2023-11-24 21:54:08,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 488 flow [2023-11-24 21:54:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:54:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:54:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2023-11-24 21:54:08,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2023-11-24 21:54:08,025 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 306 transitions. [2023-11-24 21:54:08,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 306 transitions. [2023-11-24 21:54:08,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:08,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 306 transitions. [2023-11-24 21:54:08,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:54:08,029 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 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) [2023-11-24 21:54:08,030 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 176 flow. Second operand 9 states and 306 transitions. [2023-11-24 21:54:08,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 488 flow [2023-11-24 21:54:08,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:54:08,038 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 268 flow [2023-11-24 21:54:08,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-24 21:54:08,040 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2023-11-24 21:54:08,040 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 268 flow [2023-11-24 21:54:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.88888888888889) internal successors, (260), 9 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:08,041 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:08,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:08,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:08,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:08,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:08,246 INFO L85 PathProgramCache]: Analyzing trace with hash -527873835, now seen corresponding path program 3 times [2023-11-24 21:54:08,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820679301] [2023-11-24 21:54:08,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:54:08,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:08,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:08,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:08,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:54:08,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-24 21:54:08,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:54:08,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:54:08,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:08,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:08,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820679301] [2023-11-24 21:54:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820679301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:08,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:54:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894627787] [2023-11-24 21:54:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:08,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:54:08,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:54:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:08,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2023-11-24 21:54:08,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:08,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2023-11-24 21:54:08,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:09,392 INFO L124 PetriNetUnfolderBase]: 2044/3737 cut-off events. [2023-11-24 21:54:09,392 INFO L125 PetriNetUnfolderBase]: For 2542/2652 co-relation queries the response was YES. [2023-11-24 21:54:09,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 3737 events. 2044/3737 cut-off events. For 2542/2652 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24250 event pairs, 496 based on Foata normal form. 8/3557 useless extension candidates. Maximal degree in co-relation 9965. Up to 1479 conditions per place. [2023-11-24 21:54:09,432 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 64 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2023-11-24 21:54:09,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 635 flow [2023-11-24 21:54:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:54:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:54:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2023-11-24 21:54:09,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6320754716981132 [2023-11-24 21:54:09,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2023-11-24 21:54:09,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2023-11-24 21:54:09,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:09,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2023-11-24 21:54:09,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,440 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 268 flow. Second operand 6 states and 201 transitions. [2023-11-24 21:54:09,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 635 flow [2023-11-24 21:54:09,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 622 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:54:09,457 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 451 flow [2023-11-24 21:54:09,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-24 21:54:09,459 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2023-11-24 21:54:09,459 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 451 flow [2023-11-24 21:54:09,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:09,460 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:09,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:09,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:54:09,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 454565125, now seen corresponding path program 4 times [2023-11-24 21:54:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444247078] [2023-11-24 21:54:09,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 21:54:09,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:09,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:09,681 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:54:09,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451f1389-2165-438e-9dd2-c10293626883/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:54:09,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 21:54:09,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-24 21:54:09,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.