./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu --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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:43,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:43,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:34:43,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:43,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:43,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:43,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:43,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:43,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:43,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:43,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:43,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:43,719 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:43,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:43,721 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:43,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:43,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:43,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:43,723 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:43,724 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:43,724 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:43,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:43,725 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:43,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:43,726 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:43,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:43,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:43,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:43,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:43,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:43,730 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:43,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:43,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:43,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:43,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:43,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:43,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:43,733 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:43,733 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_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2023-11-19 07:34:44,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:44,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:44,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:44,099 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:44,100 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:44,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-19 07:34:47,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:47,578 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:47,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-19 07:34:47,592 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/data/eb80199dc/ab8eaee95cd94d06841eec944f8ad27a/FLAG1017f13d6 [2023-11-19 07:34:47,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/data/eb80199dc/ab8eaee95cd94d06841eec944f8ad27a [2023-11-19 07:34:47,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:47,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:47,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:47,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:47,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:47,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:47" (1/1) ... [2023-11-19 07:34:47,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebd264c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:47, skipping insertion in model container [2023-11-19 07:34:47,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:47" (1/1) ... [2023-11-19 07:34:47,674 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:47,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:48,001 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:48,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:48,135 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:48,135 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:48,143 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:48,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48 WrapperNode [2023-11-19 07:34:48,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:48,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:48,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:48,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:48,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,216 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-19 07:34:48,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:48,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:48,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:48,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:48,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:48,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:48,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:48,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:48,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:48,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:48,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:48,320 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:34:48,321 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:34:48,321 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:34:48,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:34:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:34:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:34:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:34:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:48,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:48,325 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:34:48,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:48,483 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:48,488 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:48,661 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:48,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:48,671 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:34:48,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:48 BoogieIcfgContainer [2023-11-19 07:34:48,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:48,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:48,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:48,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:48,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:47" (1/3) ... [2023-11-19 07:34:48,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d7ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:48, skipping insertion in model container [2023-11-19 07:34:48,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (2/3) ... [2023-11-19 07:34:48,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1d7ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:48, skipping insertion in model container [2023-11-19 07:34:48,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:48" (3/3) ... [2023-11-19 07:34:48,683 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-11-19 07:34:48,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:48,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:34:48,702 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:48,769 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:34:48,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 07:34:48,849 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 07:34:48,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:48,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 07:34:48,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 07:34:48,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-19 07:34:48,864 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:48,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 07:34:48,877 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 07:34:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-19 07:34:48,902 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 07:34:48,902 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:48,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 07:34:48,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-19 07:34:51,641 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-19 07:34:51,641 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-19 07:34:51,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:51,677 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;@65f1d6a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:51,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:34:51,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:51,682 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:34:51,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:51,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:51,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:34:51,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:51,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-19 07:34:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798400776] [2023-11-19 07:34:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:51,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798400776] [2023-11-19 07:34:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798400776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:51,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:34:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773973096] [2023-11-19 07:34:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:34:51,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:34:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:34:51,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-19 07:34:51,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:51,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:51,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-19 07:34:51,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:51,991 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-19 07:34:51,992 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:34:51,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-19 07:34:51,995 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-19 07:34:51,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-19 07:34:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:34:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:34:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-19 07:34:52,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-19 07:34:52,012 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-19 07:34:52,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-19 07:34:52,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:52,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-19 07:34:52,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,027 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,029 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-19 07:34:52,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-19 07:34:52,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:52,034 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-19 07:34:52,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-19 07:34:52,040 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 07:34:52,040 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-19 07:34:52,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:52,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:52,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:52,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-19 07:34:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6255223] [2023-11-19 07:34:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6255223] [2023-11-19 07:34:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6255223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:52,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711184381] [2023-11-19 07:34:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:52,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:52,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:52,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:52,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:52,336 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-19 07:34:52,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:52,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-11-19 07:34:52,338 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 07:34:52,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-19 07:34:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-19 07:34:52,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-19 07:34:52,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-19 07:34:52,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-19 07:34:52,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:52,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-19 07:34:52,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,349 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-19 07:34:52,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-19 07:34:52,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:52,350 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-19 07:34:52,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-19 07:34:52,352 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 07:34:52,352 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-19 07:34:52,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:52,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:52,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:52,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-19 07:34:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982107630] [2023-11-19 07:34:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:52,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:52,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982107630] [2023-11-19 07:34:52,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982107630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:52,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129946065] [2023-11-19 07:34:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 07:34:52,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:52,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 07:34:52,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:52,621 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-19 07:34:52,621 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:34:52,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-11-19 07:34:52,623 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 07:34:52,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-19 07:34:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-19 07:34:52,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-19 07:34:52,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-19 07:34:52,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-19 07:34:52,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:52,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-19 07:34:52,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,631 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-19 07:34:52,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-19 07:34:52,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:52,632 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-19 07:34:52,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-19 07:34:52,633 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-19 07:34:52,634 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-19 07:34:52,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:52,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:34:52,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:52,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:52,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-19 07:34:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:52,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624059979] [2023-11-19 07:34:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:52,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:52,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624059979] [2023-11-19 07:34:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624059979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:52,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:52,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391653112] [2023-11-19 07:34:52,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:52,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-19 07:34:52,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:52,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-19 07:34:52,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:52,980 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-19 07:34:52,981 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:34:52,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-11-19 07:34:52,987 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-19 07:34:52,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-19 07:34:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-19 07:34:52,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-19 07:34:52,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-19 07:34:52,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-19 07:34:52,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:52,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-19 07:34:52,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,999 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:52,999 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-19 07:34:52,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-19 07:34:53,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:53,004 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-19 07:34:53,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-19 07:34:53,006 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-19 07:34:53,006 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-19 07:34:53,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:53,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:53,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:53,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:53,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-19 07:34:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:53,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258712018] [2023-11-19 07:34:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258712018] [2023-11-19 07:34:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258712018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:53,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:53,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173742723] [2023-11-19 07:34:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:53,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-19 07:34:53,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:53,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-19 07:34:53,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:53,408 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-19 07:34:53,408 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-19 07:34:53,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-11-19 07:34:53,411 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-19 07:34:53,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-19 07:34:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:34:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-19 07:34:53,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-19 07:34:53,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-19 07:34:53,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-19 07:34:53,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:53,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-19 07:34:53,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,420 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,420 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-19 07:34:53,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-19 07:34:53,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:53,424 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-19 07:34:53,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-19 07:34:53,427 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-19 07:34:53,427 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-19 07:34:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:53,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:53,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:53,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:53,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-19 07:34:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341820195] [2023-11-19 07:34:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341820195] [2023-11-19 07:34:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341820195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359183336] [2023-11-19 07:34:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:53,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:53,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:53,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:53,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:53,631 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-19 07:34:53,631 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-19 07:34:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-11-19 07:34:53,633 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-19 07:34:53,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-19 07:34:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:34:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-19 07:34:53,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-19 07:34:53,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-19 07:34:53,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-19 07:34:53,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:53,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-19 07:34:53,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,640 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,640 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-19 07:34:53,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-19 07:34:53,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:53,643 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-19 07:34:53,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-19 07:34:53,644 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-19 07:34:53,644 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-19 07:34:53,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:53,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:53,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:53,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-19 07:34:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815894274] [2023-11-19 07:34:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815894274] [2023-11-19 07:34:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815894274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:53,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306627475] [2023-11-19 07:34:53,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:53,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:53,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:53,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:53,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:53,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:53,894 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-19 07:34:53,894 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-19 07:34:53,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-11-19 07:34:53,897 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-19 07:34:53,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-19 07:34:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-19 07:34:53,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-19 07:34:53,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-19 07:34:53,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-19 07:34:53,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:53,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-19 07:34:53,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,906 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-19 07:34:53,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-19 07:34:53,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:53,909 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-19 07:34:53,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-19 07:34:53,910 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-19 07:34:53,911 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-19 07:34:53,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:53,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:53,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:34:53,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:53,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-19 07:34:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:53,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089769447] [2023-11-19 07:34:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:53,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:54,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089769447] [2023-11-19 07:34:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089769447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:54,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721450747] [2023-11-19 07:34:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:54,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:54,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:54,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:54,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:54,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:54,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:54,165 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-19 07:34:54,165 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-19 07:34:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 762. Up to 84 conditions per place. [2023-11-19 07:34:54,167 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-11-19 07:34:54,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-11-19 07:34:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:34:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-19 07:34:54,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407185628742515 [2023-11-19 07:34:54,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-19 07:34:54,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-19 07:34:54,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:54,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-19 07:34:54,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,175 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,175 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 368 transitions. [2023-11-19 07:34:54,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-11-19 07:34:54,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:54,181 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-11-19 07:34:54,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-19 07:34:54,182 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-11-19 07:34:54,182 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-11-19 07:34:54,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:54,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:34:54,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:54,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-19 07:34:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:54,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683247272] [2023-11-19 07:34:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683247272] [2023-11-19 07:34:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683247272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557310915] [2023-11-19 07:34:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:54,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:54,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:54,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:54,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:54,458 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-19 07:34:54,458 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-19 07:34:54,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 263 events. 150/263 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 864 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1079. Up to 73 conditions per place. [2023-11-19 07:34:54,461 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-11-19 07:34:54,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-11-19 07:34:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:54,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:34:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-19 07:34:54,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-19 07:34:54,465 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-19 07:34:54,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-19 07:34:54,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:54,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-19 07:34:54,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,472 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,472 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 582 transitions. [2023-11-19 07:34:54,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-11-19 07:34:54,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-19 07:34:54,478 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-11-19 07:34:54,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-19 07:34:54,479 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-11-19 07:34:54,480 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-11-19 07:34:54,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:54,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:54,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:34:54,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:54,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-19 07:34:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:54,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259887807] [2023-11-19 07:34:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:54,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:54,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259887807] [2023-11-19 07:34:54,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259887807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:54,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:54,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:54,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700845878] [2023-11-19 07:34:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:54,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:54,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:54,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:54,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:54,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:54,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:54,802 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-11-19 07:34:54,802 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-11-19 07:34:54,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 255 events. 146/255 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 844 event pairs, 18 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1193. Up to 75 conditions per place. [2023-11-19 07:34:54,805 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-11-19 07:34:54,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 603 flow [2023-11-19 07:34:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:34:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 581 transitions. [2023-11-19 07:34:54,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488023952095806 [2023-11-19 07:34:54,808 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 581 transitions. [2023-11-19 07:34:54,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 581 transitions. [2023-11-19 07:34:54,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:54,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 581 transitions. [2023-11-19 07:34:54,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.625) internal successors, (581), 8 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,815 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,815 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 8 states and 581 transitions. [2023-11-19 07:34:54,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 603 flow [2023-11-19 07:34:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 552 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:54,824 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 396 flow [2023-11-19 07:34:54,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2023-11-19 07:34:54,825 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2023-11-19 07:34:54,825 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 396 flow [2023-11-19 07:34:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:54,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:54,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:54,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:54,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:54,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash 726265661, now seen corresponding path program 3 times [2023-11-19 07:34:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674200036] [2023-11-19 07:34:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:54,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674200036] [2023-11-19 07:34:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674200036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550490344] [2023-11-19 07:34:54,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:34:54,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:54,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:54,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:55,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:34:55,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:55,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:34:55,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:55,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:55,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550490344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:55,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:55,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:34:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511801688] [2023-11-19 07:34:55,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:34:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:34:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:34:55,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:55,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:55,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:55,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:55,622 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-11-19 07:34:55,622 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-11-19 07:34:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 303 events. 170/303 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 994 event pairs, 35 based on Foata normal form. 24/327 useless extension candidates. Maximal degree in co-relation 1500. Up to 161 conditions per place. [2023-11-19 07:34:55,626 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-11-19 07:34:55,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 818 flow [2023-11-19 07:34:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:34:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:34:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 869 transitions. [2023-11-19 07:34:55,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363273453093815 [2023-11-19 07:34:55,631 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 869 transitions. [2023-11-19 07:34:55,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 869 transitions. [2023-11-19 07:34:55,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:55,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 869 transitions. [2023-11-19 07:34:55,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.41666666666667) internal successors, (869), 12 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,642 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,642 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 396 flow. Second operand 12 states and 869 transitions. [2023-11-19 07:34:55,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 818 flow [2023-11-19 07:34:55,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 769 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-19 07:34:55,654 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 507 flow [2023-11-19 07:34:55,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=507, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2023-11-19 07:34:55,655 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2023-11-19 07:34:55,655 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 507 flow [2023-11-19 07:34:55,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:55,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:55,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:55,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:55,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:34:55,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:55,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash 748608911, now seen corresponding path program 4 times [2023-11-19 07:34:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002004191] [2023-11-19 07:34:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:56,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:56,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002004191] [2023-11-19 07:34:56,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002004191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:56,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685290746] [2023-11-19 07:34:56,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:34:56,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:56,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:56,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:56,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:56,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:34:56,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:56,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:34:56,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:56,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685290746] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:56,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:34:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923193343] [2023-11-19 07:34:56,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:34:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:34:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:34:56,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:56,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 507 flow. Second operand has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:56,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:56,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:56,824 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-11-19 07:34:56,825 INFO L125 PetriNetUnfolderBase]: For 6604/6604 co-relation queries the response was YES. [2023-11-19 07:34:56,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 439 events. 244/439 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1683 event pairs, 28 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2508. Up to 134 conditions per place. [2023-11-19 07:34:56,831 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-11-19 07:34:56,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1396 flow [2023-11-19 07:34:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:34:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 07:34:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1303 transitions. [2023-11-19 07:34:56,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334664005322688 [2023-11-19 07:34:56,838 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1303 transitions. [2023-11-19 07:34:56,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1303 transitions. [2023-11-19 07:34:56,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:56,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1303 transitions. [2023-11-19 07:34:56,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.38888888888889) internal successors, (1303), 18 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:56,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:56,853 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:56,854 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 507 flow. Second operand 18 states and 1303 transitions. [2023-11-19 07:34:56,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1396 flow [2023-11-19 07:34:56,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 1282 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-19 07:34:56,881 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 912 flow [2023-11-19 07:34:56,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=912, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2023-11-19 07:34:56,882 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-11-19 07:34:56,882 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 912 flow [2023-11-19 07:34:56,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:56,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:56,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:56,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:57,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:57,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:57,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1875041737, now seen corresponding path program 5 times [2023-11-19 07:34:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:57,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122745830] [2023-11-19 07:34:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:57,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122745830] [2023-11-19 07:34:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122745830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496568680] [2023-11-19 07:34:57,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:34:57,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:57,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:57,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:57,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:34:57,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:57,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:34:57,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:57,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496568680] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:57,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:57,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:34:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023125538] [2023-11-19 07:34:57,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:57,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:57,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:57,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:57,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:57,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:57,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:58,041 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-11-19 07:34:58,041 INFO L125 PetriNetUnfolderBase]: For 16186/16186 co-relation queries the response was YES. [2023-11-19 07:34:58,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 599 events. 328/599 cut-off events. For 16186/16186 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2509 event pairs, 27 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4500. Up to 210 conditions per place. [2023-11-19 07:34:58,050 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-11-19 07:34:58,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2191 flow [2023-11-19 07:34:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:34:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 07:34:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1298 transitions. [2023-11-19 07:34:58,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318030605455755 [2023-11-19 07:34:58,055 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1298 transitions. [2023-11-19 07:34:58,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1298 transitions. [2023-11-19 07:34:58,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:58,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1298 transitions. [2023-11-19 07:34:58,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.11111111111111) internal successors, (1298), 18 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,068 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,068 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 912 flow. Second operand 18 states and 1298 transitions. [2023-11-19 07:34:58,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2191 flow [2023-11-19 07:34:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 1901 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-11-19 07:34:58,154 INFO L231 Difference]: Finished difference. Result has 114 places, 80 transitions, 1286 flow [2023-11-19 07:34:58,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1286, PETRI_PLACES=114, PETRI_TRANSITIONS=80} [2023-11-19 07:34:58,155 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-11-19 07:34:58,156 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 1286 flow [2023-11-19 07:34:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:58,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:58,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:58,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:34:58,371 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:58,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1892921323, now seen corresponding path program 6 times [2023-11-19 07:34:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:58,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122276849] [2023-11-19 07:34:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:58,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122276849] [2023-11-19 07:34:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122276849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343636817] [2023-11-19 07:34:58,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:34:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:58,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:58,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:58,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-19 07:34:58,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:58,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:34:58,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:58,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343636817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:58,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:58,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:34:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382462595] [2023-11-19 07:34:58,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:34:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:34:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:58,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:34:58,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 1286 flow. Second operand has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:58,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:58,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:34:58,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:59,284 INFO L124 PetriNetUnfolderBase]: 388/707 cut-off events. [2023-11-19 07:34:59,284 INFO L125 PetriNetUnfolderBase]: For 30680/30680 co-relation queries the response was YES. [2023-11-19 07:34:59,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 707 events. 388/707 cut-off events. For 30680/30680 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3056 event pairs, 12 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 6026. Up to 247 conditions per place. [2023-11-19 07:34:59,295 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 84 changer transitions 38/168 dead transitions. [2023-11-19 07:34:59,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 168 transitions, 3084 flow [2023-11-19 07:34:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:34:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 07:34:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1590 transitions. [2023-11-19 07:34:59,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327708219923789 [2023-11-19 07:34:59,302 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1590 transitions. [2023-11-19 07:34:59,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1590 transitions. [2023-11-19 07:34:59,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:59,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1590 transitions. [2023-11-19 07:34:59,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 72.27272727272727) internal successors, (1590), 22 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:59,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:59,316 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:59,316 INFO L175 Difference]: Start difference. First operand has 114 places, 80 transitions, 1286 flow. Second operand 22 states and 1590 transitions. [2023-11-19 07:34:59,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 168 transitions, 3084 flow [2023-11-19 07:34:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 168 transitions, 2492 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-11-19 07:34:59,418 INFO L231 Difference]: Finished difference. Result has 134 places, 101 transitions, 1744 flow [2023-11-19 07:34:59,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1744, PETRI_PLACES=134, PETRI_TRANSITIONS=101} [2023-11-19 07:34:59,419 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 110 predicate places. [2023-11-19 07:34:59,419 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 101 transitions, 1744 flow [2023-11-19 07:34:59,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:59,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:59,420 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:59,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:59,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:34:59,634 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:34:59,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1884854321, now seen corresponding path program 7 times [2023-11-19 07:34:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:59,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220263030] [2023-11-19 07:34:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220263030] [2023-11-19 07:34:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220263030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839829935] [2023-11-19 07:34:59,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:34:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:59,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:59,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:34:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:59,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:34:59,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:00,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839829935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:00,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-11-19 07:35:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268481165] [2023-11-19 07:35:00,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:35:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:35:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:35:00,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:35:00,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 101 transitions, 1744 flow. Second operand has 23 states, 23 states have (on average 68.47826086956522) internal successors, (1575), 23 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:00,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:00,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:35:00,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:01,223 INFO L124 PetriNetUnfolderBase]: 536/955 cut-off events. [2023-11-19 07:35:01,224 INFO L125 PetriNetUnfolderBase]: For 48124/48124 co-relation queries the response was YES. [2023-11-19 07:35:01,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9053 conditions, 955 events. 536/955 cut-off events. For 48124/48124 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4100 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8996. Up to 339 conditions per place. [2023-11-19 07:35:01,240 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-11-19 07:35:01,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 5062 flow [2023-11-19 07:35:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-19 07:35:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-19 07:35:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2594 transitions. [2023-11-19 07:35:01,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314703925482369 [2023-11-19 07:35:01,249 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2594 transitions. [2023-11-19 07:35:01,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2594 transitions. [2023-11-19 07:35:01,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:01,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2594 transitions. [2023-11-19 07:35:01,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.05555555555556) internal successors, (2594), 36 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:01,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:01,274 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:01,274 INFO L175 Difference]: Start difference. First operand has 134 places, 101 transitions, 1744 flow. Second operand 36 states and 2594 transitions. [2023-11-19 07:35:01,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 5062 flow [2023-11-19 07:35:01,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 247 transitions, 4410 flow, removed 289 selfloop flow, removed 14 redundant places. [2023-11-19 07:35:01,439 INFO L231 Difference]: Finished difference. Result has 173 places, 138 transitions, 2788 flow [2023-11-19 07:35:01,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2788, PETRI_PLACES=173, PETRI_TRANSITIONS=138} [2023-11-19 07:35:01,441 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 149 predicate places. [2023-11-19 07:35:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 138 transitions, 2788 flow [2023-11-19 07:35:01,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 68.47826086956522) internal successors, (1575), 23 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:01,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:01,442 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:01,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:01,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:35:01,664 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:35:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -92387390, now seen corresponding path program 8 times [2023-11-19 07:35:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865853870] [2023-11-19 07:35:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:02,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:02,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865853870] [2023-11-19 07:35:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865853870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:02,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128285721] [2023-11-19 07:35:02,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:35:02,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:02,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:02,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:35:02,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:35:02,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:02,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:35:02,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:02,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:02,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128285721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:02,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-11-19 07:35:02,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730475823] [2023-11-19 07:35:02,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:35:02,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:35:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:35:02,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:35:02,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 138 transitions, 2788 flow. Second operand has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:02,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:02,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:35:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:03,671 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-11-19 07:35:03,671 INFO L125 PetriNetUnfolderBase]: For 100879/100879 co-relation queries the response was YES. [2023-11-19 07:35:03,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14180 conditions, 1211 events. 664/1211 cut-off events. For 100879/100879 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5520 event pairs, 104 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 14109. Up to 467 conditions per place. [2023-11-19 07:35:03,694 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-11-19 07:35:03,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 255 transitions, 6446 flow [2023-11-19 07:35:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 07:35:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-19 07:35:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2080 transitions. [2023-11-19 07:35:03,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429485855874458 [2023-11-19 07:35:03,699 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2080 transitions. [2023-11-19 07:35:03,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2080 transitions. [2023-11-19 07:35:03,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:03,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2080 transitions. [2023-11-19 07:35:03,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 71.72413793103448) internal successors, (2080), 29 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:03,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 167.0) internal successors, (5010), 30 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:03,734 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 167.0) internal successors, (5010), 30 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:03,734 INFO L175 Difference]: Start difference. First operand has 173 places, 138 transitions, 2788 flow. Second operand 29 states and 2080 transitions. [2023-11-19 07:35:03,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 255 transitions, 6446 flow [2023-11-19 07:35:04,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 255 transitions, 4952 flow, removed 723 selfloop flow, removed 12 redundant places. [2023-11-19 07:35:04,197 INFO L231 Difference]: Finished difference. Result has 199 places, 170 transitions, 3155 flow [2023-11-19 07:35:04,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3155, PETRI_PLACES=199, PETRI_TRANSITIONS=170} [2023-11-19 07:35:04,199 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2023-11-19 07:35:04,199 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 170 transitions, 3155 flow [2023-11-19 07:35:04,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:04,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:04,200 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:04,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:04,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:35:04,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:35:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1131100696, now seen corresponding path program 9 times [2023-11-19 07:35:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865796138] [2023-11-19 07:35:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865796138] [2023-11-19 07:35:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865796138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842918117] [2023-11-19 07:35:04,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:35:04,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:04,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:04,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:04,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:35:04,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-19 07:35:04,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:04,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:35:04,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:04,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842918117] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:05,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-11-19 07:35:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311241304] [2023-11-19 07:35:05,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 07:35:05,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 07:35:05,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-11-19 07:35:05,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:35:05,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 170 transitions, 3155 flow. Second operand has 30 states, 30 states have (on average 68.4) internal successors, (2052), 30 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:05,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:05,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:35:05,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:06,647 INFO L124 PetriNetUnfolderBase]: 808/1483 cut-off events. [2023-11-19 07:35:06,647 INFO L125 PetriNetUnfolderBase]: For 160046/160046 co-relation queries the response was YES. [2023-11-19 07:35:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17465 conditions, 1483 events. 808/1483 cut-off events. For 160046/160046 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6851 event pairs, 40 based on Foata normal form. 32/1515 useless extension candidates. Maximal degree in co-relation 17387. Up to 595 conditions per place. [2023-11-19 07:35:06,674 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 73 selfloop transitions, 173 changer transitions 67/313 dead transitions. [2023-11-19 07:35:06,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 313 transitions, 7325 flow [2023-11-19 07:35:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-19 07:35:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-19 07:35:06,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2584 transitions. [2023-11-19 07:35:06,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42980705256154356 [2023-11-19 07:35:06,681 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2584 transitions. [2023-11-19 07:35:06,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2584 transitions. [2023-11-19 07:35:06,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:06,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2584 transitions. [2023-11-19 07:35:06,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 71.77777777777777) internal successors, (2584), 36 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:06,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:06,698 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:06,698 INFO L175 Difference]: Start difference. First operand has 199 places, 170 transitions, 3155 flow. Second operand 36 states and 2584 transitions. [2023-11-19 07:35:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 313 transitions, 7325 flow [2023-11-19 07:35:07,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 313 transitions, 6641 flow, removed 310 selfloop flow, removed 11 redundant places. [2023-11-19 07:35:07,178 INFO L231 Difference]: Finished difference. Result has 236 places, 207 transitions, 4158 flow [2023-11-19 07:35:07,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4158, PETRI_PLACES=236, PETRI_TRANSITIONS=207} [2023-11-19 07:35:07,178 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-11-19 07:35:07,178 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 207 transitions, 4158 flow [2023-11-19 07:35:07,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 68.4) internal successors, (2052), 30 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:07,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:07,180 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:07,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:07,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:35:07,396 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:35:07,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 774763282, now seen corresponding path program 10 times [2023-11-19 07:35:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694788237] [2023-11-19 07:35:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:07,792 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:07,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694788237] [2023-11-19 07:35:07,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694788237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:07,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597481548] [2023-11-19 07:35:07,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:35:07,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:07,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:07,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:35:07,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:35:07,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:07,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:35:07,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:07,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597481548] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:08,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:08,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-11-19 07:35:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017673366] [2023-11-19 07:35:08,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:08,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:35:08,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:08,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:35:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:35:08,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:35:08,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 207 transitions, 4158 flow. Second operand has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:08,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:08,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:35:08,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:09,894 INFO L124 PetriNetUnfolderBase]: 908/1651 cut-off events. [2023-11-19 07:35:09,894 INFO L125 PetriNetUnfolderBase]: For 233913/233913 co-relation queries the response was YES. [2023-11-19 07:35:09,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 1651 events. 908/1651 cut-off events. For 233913/233913 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7677 event pairs, 12 based on Foata normal form. 32/1683 useless extension candidates. Maximal degree in co-relation 21544. Up to 663 conditions per place. [2023-11-19 07:35:09,929 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 70 selfloop transitions, 214 changer transitions 84/368 dead transitions. [2023-11-19 07:35:09,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 368 transitions, 9464 flow [2023-11-19 07:35:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 07:35:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-19 07:35:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3236 transitions. [2023-11-19 07:35:09,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43060545575515635 [2023-11-19 07:35:09,951 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3236 transitions. [2023-11-19 07:35:09,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3236 transitions. [2023-11-19 07:35:09,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:09,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3236 transitions. [2023-11-19 07:35:10,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 71.91111111111111) internal successors, (3236), 45 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:10,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 167.0) internal successors, (7682), 46 states have internal predecessors, (7682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:10,045 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 167.0) internal successors, (7682), 46 states have internal predecessors, (7682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:10,046 INFO L175 Difference]: Start difference. First operand has 236 places, 207 transitions, 4158 flow. Second operand 45 states and 3236 transitions. [2023-11-19 07:35:10,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 368 transitions, 9464 flow [2023-11-19 07:35:10,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 368 transitions, 8678 flow, removed 304 selfloop flow, removed 17 redundant places. [2023-11-19 07:35:10,999 INFO L231 Difference]: Finished difference. Result has 278 places, 232 transitions, 5246 flow [2023-11-19 07:35:10,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5246, PETRI_PLACES=278, PETRI_TRANSITIONS=232} [2023-11-19 07:35:11,000 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 254 predicate places. [2023-11-19 07:35:11,000 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 232 transitions, 5246 flow [2023-11-19 07:35:11,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:11,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:11,001 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:11,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:35:11,215 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:35:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 86769389, now seen corresponding path program 11 times [2023-11-19 07:35:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56825980] [2023-11-19 07:35:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56825980] [2023-11-19 07:35:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56825980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751366183] [2023-11-19 07:35:11,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:35:11,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:11,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:11,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:35:11,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-19 07:35:11,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:11,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:35:11,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:11,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:12,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751366183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:12,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2023-11-19 07:35:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887242070] [2023-11-19 07:35:12,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-19 07:35:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-19 07:35:12,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2023-11-19 07:35:12,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:35:12,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 232 transitions, 5246 flow. Second operand has 46 states, 46 states have (on average 68.23913043478261) internal successors, (3139), 46 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:12,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:12,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:35:12,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:14,657 INFO L124 PetriNetUnfolderBase]: 1016/1843 cut-off events. [2023-11-19 07:35:14,657 INFO L125 PetriNetUnfolderBase]: For 346940/346940 co-relation queries the response was YES. [2023-11-19 07:35:14,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27665 conditions, 1843 events. 1016/1843 cut-off events. For 346940/346940 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8615 event pairs, 29 based on Foata normal form. 12/1855 useless extension candidates. Maximal degree in co-relation 27558. Up to 739 conditions per place. [2023-11-19 07:35:14,692 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 82 selfloop transitions, 233 changer transitions 90/405 dead transitions. [2023-11-19 07:35:14,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 405 transitions, 11615 flow [2023-11-19 07:35:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 07:35:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-19 07:35:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3446 transitions. [2023-11-19 07:35:14,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42989021956087825 [2023-11-19 07:35:14,704 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3446 transitions. [2023-11-19 07:35:14,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3446 transitions. [2023-11-19 07:35:14,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:14,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3446 transitions. [2023-11-19 07:35:14,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 71.79166666666667) internal successors, (3446), 48 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:14,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:14,733 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:14,733 INFO L175 Difference]: Start difference. First operand has 278 places, 232 transitions, 5246 flow. Second operand 48 states and 3446 transitions. [2023-11-19 07:35:14,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 405 transitions, 11615 flow [2023-11-19 07:35:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 405 transitions, 9826 flow, removed 752 selfloop flow, removed 30 redundant places. [2023-11-19 07:35:16,314 INFO L231 Difference]: Finished difference. Result has 303 places, 259 transitions, 5381 flow [2023-11-19 07:35:16,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5381, PETRI_PLACES=303, PETRI_TRANSITIONS=259} [2023-11-19 07:35:16,315 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 279 predicate places. [2023-11-19 07:35:16,316 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 259 transitions, 5381 flow [2023-11-19 07:35:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 68.23913043478261) internal successors, (3139), 46 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:16,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:16,317 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:16,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:16,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:16,539 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:35:16,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1605663201, now seen corresponding path program 12 times [2023-11-19 07:35:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579871556] [2023-11-19 07:35:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:16,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:16,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:16,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579871556] [2023-11-19 07:35:16,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579871556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:16,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758936251] [2023-11-19 07:35:16,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:35:16,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:16,743 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:16,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:35:16,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-19 07:35:16,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:16,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:35:16,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:16,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:16,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758936251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:16,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:35:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-11-19 07:35:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496627821] [2023-11-19 07:35:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:16,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:35:16,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:35:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:35:16,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 07:35:16,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 259 transitions, 5381 flow. Second operand has 13 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:16,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:16,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 07:35:16,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:20,610 INFO L124 PetriNetUnfolderBase]: 4495/7055 cut-off events. [2023-11-19 07:35:20,610 INFO L125 PetriNetUnfolderBase]: For 1416091/1416091 co-relation queries the response was YES. [2023-11-19 07:35:20,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97763 conditions, 7055 events. 4495/7055 cut-off events. For 1416091/1416091 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 38471 event pairs, 74 based on Foata normal form. 376/7431 useless extension candidates. Maximal degree in co-relation 97651. Up to 2678 conditions per place. [2023-11-19 07:35:20,694 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 0 selfloop transitions, 0 changer transitions 1464/1464 dead transitions. [2023-11-19 07:35:20,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1464 transitions, 30260 flow [2023-11-19 07:35:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:35:20,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:35:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1007 transitions. [2023-11-19 07:35:20,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463841547673883 [2023-11-19 07:35:20,698 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1007 transitions. [2023-11-19 07:35:20,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1007 transitions. [2023-11-19 07:35:20,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:20,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1007 transitions. [2023-11-19 07:35:20,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.46153846153847) internal successors, (1007), 13 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:20,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 167.0) internal successors, (2338), 14 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:20,704 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 167.0) internal successors, (2338), 14 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:20,705 INFO L175 Difference]: Start difference. First operand has 303 places, 259 transitions, 5381 flow. Second operand 13 states and 1007 transitions. [2023-11-19 07:35:20,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1464 transitions, 30260 flow [2023-11-19 07:35:26,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1464 transitions, 26715 flow, removed 413 selfloop flow, removed 44 redundant places. [2023-11-19 07:35:26,170 INFO L231 Difference]: Finished difference. Result has 270 places, 0 transitions, 0 flow [2023-11-19 07:35:26,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=270, PETRI_TRANSITIONS=0} [2023-11-19 07:35:26,171 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 246 predicate places. [2023-11-19 07:35:26,171 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 0 transitions, 0 flow [2023-11-19 07:35:26,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-19 07:35:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 07:35:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 07:35:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 07:35:26,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-19 07:35:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 07:35:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 07:35:26,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-19 07:35:26,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-19 07:35:26,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:26,376 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:26,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:35:26,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:35:26,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:35:26 BasicIcfg [2023-11-19 07:35:26,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:35:26,383 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:35:26,383 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:35:26,384 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:35:26,384 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:48" (3/4) ... [2023-11-19 07:35:26,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:35:26,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-19 07:35:26,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-19 07:35:26,396 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 07:35:26,396 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 07:35:26,396 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:35:26,396 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:35:26,499 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:35:26,499 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:35:26,500 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:35:26,500 INFO L158 Benchmark]: Toolchain (without parser) took 38892.05ms. Allocated memory was 136.3MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 89.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 337.2MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,501 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 73.3MB in the beginning and 73.3MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:35:26,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.38ms. Allocated memory is still 136.3MB. Free memory was 88.5MB in the beginning and 105.7MB in the end (delta: -17.2MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.26ms. Allocated memory is still 136.3MB. Free memory was 105.6MB in the beginning and 107.6MB in the end (delta: -1.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,502 INFO L158 Benchmark]: Boogie Preprocessor took 28.33ms. Allocated memory is still 136.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,502 INFO L158 Benchmark]: RCFGBuilder took 427.74ms. Allocated memory is still 136.3MB. Free memory was 105.5MB in the beginning and 92.7MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,503 INFO L158 Benchmark]: TraceAbstraction took 37706.27ms. Allocated memory was 136.3MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 91.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 461.5MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,503 INFO L158 Benchmark]: Witness Printer took 116.55ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:35:26,506 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 73.3MB in the beginning and 73.3MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.38ms. Allocated memory is still 136.3MB. Free memory was 88.5MB in the beginning and 105.7MB in the end (delta: -17.2MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.26ms. Allocated memory is still 136.3MB. Free memory was 105.6MB in the beginning and 107.6MB in the end (delta: -1.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.33ms. Allocated memory is still 136.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.74ms. Allocated memory is still 136.3MB. Free memory was 105.5MB in the beginning and 92.7MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 37706.27ms. Allocated memory was 136.3MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 91.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 461.5MB. Max. memory is 16.1GB. * Witness Printer took 116.55ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 81 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1366, independent conditional: 0, independent unconditional: 1366, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1395, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 37.6s, OverallIterations: 20, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3876 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3652 mSDsluCounter, 697 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 607 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4257 IncrementalHoareTripleChecker+Invalid, 4632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 90 mSDtfsCounter, 4257 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 698 GetRequests, 231 SyntacticMatches, 8 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6748 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5381occurred in iteration=19, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 551 ConstructedInterpolants, 0 QuantifiedInterpolants, 2305 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 190/902 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:35:26,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_191b49bc-a3a1-4375-9721-b85e44bdce40/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE