./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:40:38,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:40:38,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:40:38,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:40:38,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:40:38,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:40:38,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:40:38,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:40:38,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:40:38,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:40:38,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:40:38,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:40:38,393 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:40:38,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:40:38,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:40:38,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:40:38,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:40:38,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:40:38,398 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:40:38,399 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:40:38,399 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:40:38,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:40:38,401 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:40:38,401 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:40:38,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:40:38,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:40:38,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:40:38,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:40:38,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:40:38,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:38,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:40:38,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:40:38,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:40:38,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:40:38,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:40:38,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:40:38,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:40:38,408 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:40:38,408 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_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-06 22:40:38,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:40:38,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:40:38,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:40:38,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:40:38,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:40:38,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-06 22:40:42,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:40:42,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:40:42,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-06 22:40:42,653 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/b6f80e456/166a20462e4e411fbc724572de5864d3/FLAGdeacdde1e [2023-11-06 22:40:42,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/b6f80e456/166a20462e4e411fbc724572de5864d3 [2023-11-06 22:40:42,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:40:42,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:40:42,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:42,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:40:42,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:40:42,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:42" (1/1) ... [2023-11-06 22:40:42,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@843b3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:42, skipping insertion in model container [2023-11-06 22:40:42,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:42" (1/1) ... [2023-11-06 22:40:42,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:40:43,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:43,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:40:43,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:43,269 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:40:43,279 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:40:43,289 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:40:43,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43 WrapperNode [2023-11-06 22:40:43,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:43,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:43,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:40:43,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:40:43,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,347 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-06 22:40:43,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:43,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:40:43,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:40:43,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:40:43,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,384 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:40:43,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:40:43,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:40:43,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:40:43,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (1/1) ... [2023-11-06 22:40:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:43,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:40:43,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:40:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:40:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:40:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:40:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:40:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:40:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:40:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:40:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:40:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:40:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:40:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:40:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:40:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:40:43,520 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:40:43,684 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:40:43,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:40:43,906 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:40:43,915 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:40:43,915 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:40:43,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:43 BoogieIcfgContainer [2023-11-06 22:40:43,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:40:43,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:40:43,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:40:43,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:40:43,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:42" (1/3) ... [2023-11-06 22:40:43,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc7f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:43, skipping insertion in model container [2023-11-06 22:40:43,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:43" (2/3) ... [2023-11-06 22:40:43,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fc7f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:43, skipping insertion in model container [2023-11-06 22:40:43,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:43" (3/3) ... [2023-11-06 22:40:43,930 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-06 22:40:43,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:40:43,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:40:43,951 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:40:44,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:40:44,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-06 22:40:44,160 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-06 22:40:44,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:40:44,171 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. [2023-11-06 22:40:44,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-06 22:40:44,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-06 22:40:44,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:40:44,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-06 22:40:44,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-06 22:40:44,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-06 22:40:44,280 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-06 22:40:44,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:40:44,284 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. [2023-11-06 22:40:44,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-06 22:40:47,603 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-06 22:40:47,603 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-06 22:40:47,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:40:47,633 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;@42959fa3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:40:47,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 22:40:47,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:40:47,636 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:40:47,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:40:47,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:47,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:40:47,638 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)] === [2023-11-06 22:40:47,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-06 22:40:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751936538] [2023-11-06 22:40:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:47,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:47,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751936538] [2023-11-06 22:40:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751936538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:47,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:47,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:40:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413280830] [2023-11-06 22:40:47,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:40:47,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:47,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:40:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:40:47,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-06 22:40:47,870 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) [2023-11-06 22:40:47,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:47,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-06 22:40:47,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:48,004 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-06 22:40:48,005 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:40:48,007 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. [2023-11-06 22:40:48,011 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-06 22:40:48,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-06 22:40:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:40:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:40:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-06 22:40:48,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-06 22:40:48,032 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-06 22:40:48,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-06 22:40:48,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:48,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-06 22:40:48,043 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) [2023-11-06 22:40:48,050 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) [2023-11-06 22:40:48,051 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) [2023-11-06 22:40:48,054 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-06 22:40:48,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-06 22:40:48,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:40:48,061 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-06 22:40:48,064 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} [2023-11-06 22:40:48,069 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:40:48,069 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-06 22:40:48,070 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) [2023-11-06 22:40:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:48,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:40:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:40:48,071 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)] === [2023-11-06 22:40:48,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-06 22:40:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:48,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961242384] [2023-11-06 22:40:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961242384] [2023-11-06 22:40:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961242384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:40:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362639285] [2023-11-06 22:40:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:48,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:48,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:48,418 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) [2023-11-06 22:40:48,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:48,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:48,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:48,507 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-06 22:40:48,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:40:48,508 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. [2023-11-06 22:40:48,511 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-06 22:40:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-06 22:40:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:40:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-06 22:40:48,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-06 22:40:48,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-06 22:40:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-06 22:40:48,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:48,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-06 22:40:48,521 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) [2023-11-06 22:40:48,524 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) [2023-11-06 22:40:48,525 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) [2023-11-06 22:40:48,526 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-06 22:40:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-06 22:40:48,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:40:48,528 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-06 22:40:48,528 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} [2023-11-06 22:40:48,530 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:40:48,530 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-06 22:40:48,531 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) [2023-11-06 22:40:48,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:48,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:40:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:40:48,532 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)] === [2023-11-06 22:40:48,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-06 22:40:48,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:48,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246440350] [2023-11-06 22:40:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246440350] [2023-11-06 22:40:48,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246440350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:48,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:48,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:40:48,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962108952] [2023-11-06 22:40:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:48,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:48,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-06 22:40:48,756 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) [2023-11-06 22:40:48,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:48,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-06 22:40:48,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:48,825 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-06 22:40:48,825 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:40:48,826 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. [2023-11-06 22:40:48,828 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-06 22:40:48,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-06 22:40:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:40:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-06 22:40:48,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-06 22:40:48,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-06 22:40:48,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-06 22:40:48,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:48,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-06 22:40:48,834 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) [2023-11-06 22:40:48,837 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) [2023-11-06 22:40:48,838 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) [2023-11-06 22:40:48,838 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-06 22:40:48,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-06 22:40:48,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:40:48,840 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-06 22:40:48,840 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} [2023-11-06 22:40:48,842 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-06 22:40:48,842 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-06 22:40:48,842 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) [2023-11-06 22:40:48,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:48,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:40:48,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:40:48,843 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)] === [2023-11-06 22:40:48,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-06 22:40:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137535899] [2023-11-06 22:40:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:49,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:49,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137535899] [2023-11-06 22:40:49,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137535899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:49,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:40:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929516800] [2023-11-06 22:40:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:49,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:49,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-06 22:40:49,192 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) [2023-11-06 22:40:49,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-06 22:40:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:49,359 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-06 22:40:49,359 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:40:49,363 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. [2023-11-06 22:40:49,367 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-06 22:40:49,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-06 22:40:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:40:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:40:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-06 22:40:49,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-06 22:40:49,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-06 22:40:49,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-06 22:40:49,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:49,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-06 22:40:49,374 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) [2023-11-06 22:40:49,379 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) [2023-11-06 22:40:49,380 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) [2023-11-06 22:40:49,381 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-06 22:40:49,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-06 22:40:49,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:40:49,386 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-06 22:40:49,386 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} [2023-11-06 22:40:49,389 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-06 22:40:49,389 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-06 22:40:49,390 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) [2023-11-06 22:40:49,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:49,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:40:49,391 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)] === [2023-11-06 22:40:49,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-06 22:40:49,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710102372] [2023-11-06 22:40:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:49,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710102372] [2023-11-06 22:40:49,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710102372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:49,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:49,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:40:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277701386] [2023-11-06 22:40:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:49,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:49,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-06 22:40:49,748 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) [2023-11-06 22:40:49,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:49,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-06 22:40:49,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:49,833 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-06 22:40:49,833 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-06 22:40:49,834 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. [2023-11-06 22:40:49,836 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-06 22:40:49,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-06 22:40:49,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:40:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-06 22:40:49,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-06 22:40:49,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-06 22:40:49,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-06 22:40:49,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:49,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-06 22:40:49,843 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) [2023-11-06 22:40:49,845 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) [2023-11-06 22:40:49,846 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) [2023-11-06 22:40:49,846 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-06 22:40:49,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-06 22:40:49,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:40:49,850 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-06 22:40:49,851 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} [2023-11-06 22:40:49,852 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-06 22:40:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-06 22:40:49,853 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) [2023-11-06 22:40:49,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:49,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:49,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:40:49,854 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)] === [2023-11-06 22:40:49,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-06 22:40:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:49,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078500298] [2023-11-06 22:40:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:49,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078500298] [2023-11-06 22:40:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078500298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:49,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:49,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819538760] [2023-11-06 22:40:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:49,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:49,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:50,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:50,011 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) [2023-11-06 22:40:50,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:50,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:50,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:50,090 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-06 22:40:50,090 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-06 22:40:50,091 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. [2023-11-06 22:40:50,093 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-06 22:40:50,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-06 22:40:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:40:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-06 22:40:50,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-06 22:40:50,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-06 22:40:50,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-06 22:40:50,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:50,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-06 22:40:50,098 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) [2023-11-06 22:40:50,101 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) [2023-11-06 22:40:50,102 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) [2023-11-06 22:40:50,102 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-06 22:40:50,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-06 22:40:50,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:40:50,105 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-06 22:40:50,106 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} [2023-11-06 22:40:50,107 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-06 22:40:50,107 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-06 22:40:50,108 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) [2023-11-06 22:40:50,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:50,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:40:50,109 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)] === [2023-11-06 22:40:50,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-06 22:40:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:50,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073312851] [2023-11-06 22:40:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073312851] [2023-11-06 22:40:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073312851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257755126] [2023-11-06 22:40:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:50,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:50,314 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) [2023-11-06 22:40:50,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:50,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:50,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:50,441 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-06 22:40:50,441 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-06 22:40:50,442 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. [2023-11-06 22:40:50,444 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-06 22:40:50,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-06 22:40:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:40:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-06 22:40:50,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-06 22:40:50,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-06 22:40:50,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-06 22:40:50,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:50,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-06 22:40:50,451 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) [2023-11-06 22:40:50,454 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) [2023-11-06 22:40:50,459 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) [2023-11-06 22:40:50,459 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-06 22:40:50,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-06 22:40:50,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-06 22:40:50,469 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-06 22:40:50,470 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} [2023-11-06 22:40:50,470 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-06 22:40:50,471 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-06 22:40:50,471 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) [2023-11-06 22:40:50,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:50,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:50,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:40:50,475 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)] === [2023-11-06 22:40:50,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-06 22:40:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:50,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762523387] [2023-11-06 22:40:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762523387] [2023-11-06 22:40:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762523387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:50,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:50,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164376445] [2023-11-06 22:40:50,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:50,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:50,673 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) [2023-11-06 22:40:50,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:50,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:50,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:50,802 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-06 22:40:50,803 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-06 22:40:50,804 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. [2023-11-06 22:40:50,806 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-11-06 22:40:50,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-11-06 22:40:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:40:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:40:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-06 22:40:50,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407185628742515 [2023-11-06 22:40:50,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-06 22:40:50,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-06 22:40:50,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:50,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-06 22:40:50,813 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) [2023-11-06 22:40:50,815 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) [2023-11-06 22:40:50,816 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) [2023-11-06 22:40:50,817 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 368 transitions. [2023-11-06 22:40:50,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-11-06 22:40:50,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-06 22:40:50,822 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-11-06 22:40:50,823 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} [2023-11-06 22:40:50,824 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-11-06 22:40:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-11-06 22:40:50,825 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) [2023-11-06 22:40:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:50,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:40:50,826 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)] === [2023-11-06 22:40:50,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-06 22:40:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318008073] [2023-11-06 22:40:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:50,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318008073] [2023-11-06 22:40:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318008073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:50,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:40:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151070918] [2023-11-06 22:40:50,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:50,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:40:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:40:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:40:51,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:51,020 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) [2023-11-06 22:40:51,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:51,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:51,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:51,195 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-06 22:40:51,196 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-06 22:40:51,197 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. [2023-11-06 22:40:51,200 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-11-06 22:40:51,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-11-06 22:40:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:40:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:40:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-06 22:40:51,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-06 22:40:51,205 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-06 22:40:51,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-06 22:40:51,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:51,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-06 22:40:51,208 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) [2023-11-06 22:40:51,212 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) [2023-11-06 22:40:51,213 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) [2023-11-06 22:40:51,214 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 582 transitions. [2023-11-06 22:40:51,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-11-06 22:40:51,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 22:40:51,221 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-11-06 22:40:51,221 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} [2023-11-06 22:40:51,222 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-11-06 22:40:51,223 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-11-06 22:40:51,223 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) [2023-11-06 22:40:51,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:51,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:51,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:40:51,224 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)] === [2023-11-06 22:40:51,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:51,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-06 22:40:51,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:51,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704285070] [2023-11-06 22:40:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:51,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:51,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:51,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704285070] [2023-11-06 22:40:51,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704285070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:51,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:51,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:40:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235417703] [2023-11-06 22:40:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:51,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:40:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:40:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:40:51,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:51,422 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) [2023-11-06 22:40:51,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:51,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:51,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:51,619 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-11-06 22:40:51,619 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-11-06 22:40:51,621 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. [2023-11-06 22:40:51,624 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-11-06 22:40:51,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 603 flow [2023-11-06 22:40:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:40:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:40:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 581 transitions. [2023-11-06 22:40:51,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488023952095806 [2023-11-06 22:40:51,629 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 581 transitions. [2023-11-06 22:40:51,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 581 transitions. [2023-11-06 22:40:51,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:51,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 581 transitions. [2023-11-06 22:40:51,633 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) [2023-11-06 22:40:51,637 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) [2023-11-06 22:40:51,638 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) [2023-11-06 22:40:51,638 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 8 states and 581 transitions. [2023-11-06 22:40:51,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 603 flow [2023-11-06 22:40:51,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 552 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 22:40:51,649 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 396 flow [2023-11-06 22:40:51,650 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} [2023-11-06 22:40:51,651 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2023-11-06 22:40:51,651 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 396 flow [2023-11-06 22:40:51,652 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) [2023-11-06 22:40:51,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:51,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:51,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:40:51,653 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)] === [2023-11-06 22:40:51,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 726265661, now seen corresponding path program 3 times [2023-11-06 22:40:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809679207] [2023-11-06 22:40:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809679207] [2023-11-06 22:40:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809679207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4454457] [2023-11-06 22:40:51,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:40:51,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:51,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:51,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:51,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:40:51,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:40:51,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:51,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:40:51,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:52,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:52,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4454457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:52,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:52,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:40:52,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289561829] [2023-11-06 22:40:52,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:40:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:40:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:40:52,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:52,292 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) [2023-11-06 22:40:52,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:52,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:52,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:52,559 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-11-06 22:40:52,559 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-11-06 22:40:52,561 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. [2023-11-06 22:40:52,563 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-11-06 22:40:52,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 818 flow [2023-11-06 22:40:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:40:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:40:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 869 transitions. [2023-11-06 22:40:52,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363273453093815 [2023-11-06 22:40:52,569 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 869 transitions. [2023-11-06 22:40:52,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 869 transitions. [2023-11-06 22:40:52,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:52,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 869 transitions. [2023-11-06 22:40:52,574 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) [2023-11-06 22:40:52,579 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) [2023-11-06 22:40:52,580 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) [2023-11-06 22:40:52,581 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 396 flow. Second operand 12 states and 869 transitions. [2023-11-06 22:40:52,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 818 flow [2023-11-06 22:40:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 769 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-06 22:40:52,594 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 507 flow [2023-11-06 22:40:52,594 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} [2023-11-06 22:40:52,595 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2023-11-06 22:40:52,595 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 507 flow [2023-11-06 22:40:52,596 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) [2023-11-06 22:40:52,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:52,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:52,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:52,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:40:52,803 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)] === [2023-11-06 22:40:52,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 748608911, now seen corresponding path program 4 times [2023-11-06 22:40:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:52,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194022723] [2023-11-06 22:40:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194022723] [2023-11-06 22:40:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194022723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:52,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835608915] [2023-11-06 22:40:52,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:40:52,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:52,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:53,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:40:53,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:40:53,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:53,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:40:53,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:53,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835608915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:53,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:40:53,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189172834] [2023-11-06 22:40:53,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:40:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:40:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:40:53,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:53,484 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) [2023-11-06 22:40:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:53,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:54,023 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-11-06 22:40:54,024 INFO L125 PetriNetUnfolderBase]: For 6604/6604 co-relation queries the response was YES. [2023-11-06 22:40:54,027 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. [2023-11-06 22:40:54,032 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-11-06 22:40:54,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1396 flow [2023-11-06 22:40:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:40:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:40:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1303 transitions. [2023-11-06 22:40:54,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334664005322688 [2023-11-06 22:40:54,040 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1303 transitions. [2023-11-06 22:40:54,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1303 transitions. [2023-11-06 22:40:54,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:54,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1303 transitions. [2023-11-06 22:40:54,047 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) [2023-11-06 22:40:54,056 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) [2023-11-06 22:40:54,058 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) [2023-11-06 22:40:54,058 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 507 flow. Second operand 18 states and 1303 transitions. [2023-11-06 22:40:54,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1396 flow [2023-11-06 22:40:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 1282 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-06 22:40:54,092 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 912 flow [2023-11-06 22:40:54,093 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} [2023-11-06 22:40:54,094 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-11-06 22:40:54,094 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 912 flow [2023-11-06 22:40:54,095 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) [2023-11-06 22:40:54,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:54,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:54,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:54,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:40:54,303 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)] === [2023-11-06 22:40:54,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1875041737, now seen corresponding path program 5 times [2023-11-06 22:40:54,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:54,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519744047] [2023-11-06 22:40:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:54,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519744047] [2023-11-06 22:40:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519744047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873207690] [2023-11-06 22:40:54,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:40:54,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:54,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:54,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:54,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:40:54,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:40:54,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:54,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:40:54,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:54,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:54,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873207690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:54,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:54,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:40:54,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968495320] [2023-11-06 22:40:54,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:54,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:40:54,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:40:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:40:54,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:54,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:54,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:54,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:54,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:55,399 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-11-06 22:40:55,399 INFO L125 PetriNetUnfolderBase]: For 16186/16186 co-relation queries the response was YES. [2023-11-06 22:40:55,405 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. [2023-11-06 22:40:55,412 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-11-06 22:40:55,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2191 flow [2023-11-06 22:40:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:40:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:40:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1298 transitions. [2023-11-06 22:40:55,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318030605455755 [2023-11-06 22:40:55,420 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1298 transitions. [2023-11-06 22:40:55,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1298 transitions. [2023-11-06 22:40:55,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:55,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1298 transitions. [2023-11-06 22:40:55,428 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) [2023-11-06 22:40:55,437 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) [2023-11-06 22:40:55,438 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) [2023-11-06 22:40:55,438 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 912 flow. Second operand 18 states and 1298 transitions. [2023-11-06 22:40:55,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2191 flow [2023-11-06 22:40:55,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 1901 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-11-06 22:40:55,554 INFO L231 Difference]: Finished difference. Result has 114 places, 80 transitions, 1286 flow [2023-11-06 22:40:55,554 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} [2023-11-06 22:40:55,556 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-11-06 22:40:55,556 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 1286 flow [2023-11-06 22:40:55,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:55,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:55,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:55,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:55,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:40:55,764 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)] === [2023-11-06 22:40:55,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:55,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1892921323, now seen corresponding path program 6 times [2023-11-06 22:40:55,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:55,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026603534] [2023-11-06 22:40:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:55,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:55,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026603534] [2023-11-06 22:40:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026603534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:55,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130440658] [2023-11-06 22:40:55,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:40:55,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:55,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:55,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:40:56,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:40:56,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:56,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:40:56,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:56,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:56,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130440658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:56,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:56,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:40:56,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982757748] [2023-11-06 22:40:56,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:56,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:40:56,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:56,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:40:56,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:40:56,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:56,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 1286 flow. Second operand has 15 states, 15 states have (on average 68.73333333333333) internal successors, (1031), 15 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:56,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:56,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:56,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:56,998 INFO L124 PetriNetUnfolderBase]: 380/691 cut-off events. [2023-11-06 22:40:56,999 INFO L125 PetriNetUnfolderBase]: For 28377/28377 co-relation queries the response was YES. [2023-11-06 22:40:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5913 conditions, 691 events. 380/691 cut-off events. For 28377/28377 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2945 event pairs, 12 based on Foata normal form. 24/715 useless extension candidates. Maximal degree in co-relation 5864. Up to 239 conditions per place. [2023-11-06 22:40:57,011 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 45 selfloop transitions, 82 changer transitions 36/163 dead transitions. [2023-11-06 22:40:57,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 163 transitions, 2974 flow [2023-11-06 22:40:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:40:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:40:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1518 transitions. [2023-11-06 22:40:57,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328485885372113 [2023-11-06 22:40:57,020 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1518 transitions. [2023-11-06 22:40:57,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1518 transitions. [2023-11-06 22:40:57,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:57,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1518 transitions. [2023-11-06 22:40:57,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 72.28571428571429) internal successors, (1518), 21 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:57,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 167.0) internal successors, (3674), 22 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:57,039 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 167.0) internal successors, (3674), 22 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:57,039 INFO L175 Difference]: Start difference. First operand has 114 places, 80 transitions, 1286 flow. Second operand 21 states and 1518 transitions. [2023-11-06 22:40:57,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 163 transitions, 2974 flow [2023-11-06 22:40:57,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 163 transitions, 2394 flow, removed 255 selfloop flow, removed 12 redundant places. [2023-11-06 22:40:57,158 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 1684 flow [2023-11-06 22:40:57,158 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=21, PETRI_FLOW=1684, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-11-06 22:40:57,159 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 108 predicate places. [2023-11-06 22:40:57,159 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 1684 flow [2023-11-06 22:40:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.73333333333333) internal successors, (1031), 15 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:57,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:57,160 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:57,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:57,367 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)] === [2023-11-06 22:40:57,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1884854321, now seen corresponding path program 7 times [2023-11-06 22:40:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925828959] [2023-11-06 22:40:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:57,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:57,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925828959] [2023-11-06 22:40:57,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925828959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:57,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501929730] [2023-11-06 22:40:57,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:40:57,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:57,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:57,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:40:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:57,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:40:57,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:57,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501929730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:58,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-06 22:40:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290810934] [2023-11-06 22:40:58,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:40:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:40:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:40:58,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:40:58,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 1684 flow. Second operand has 22 states, 22 states have (on average 68.5) internal successors, (1507), 22 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:58,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:58,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:40:58,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:59,275 INFO L124 PetriNetUnfolderBase]: 528/939 cut-off events. [2023-11-06 22:40:59,275 INFO L125 PetriNetUnfolderBase]: For 44765/44765 co-relation queries the response was YES. [2023-11-06 22:40:59,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 939 events. 528/939 cut-off events. For 44765/44765 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3986 event pairs, 15 based on Foata normal form. 36/975 useless extension candidates. Maximal degree in co-relation 8722. Up to 331 conditions per place. [2023-11-06 22:40:59,291 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 60 selfloop transitions, 119 changer transitions 66/245 dead transitions. [2023-11-06 22:40:59,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 245 transitions, 4946 flow [2023-11-06 22:40:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:40:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-06 22:40:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2594 transitions. [2023-11-06 22:40:59,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314703925482369 [2023-11-06 22:40:59,301 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2594 transitions. [2023-11-06 22:40:59,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2594 transitions. [2023-11-06 22:40:59,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:59,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2594 transitions. [2023-11-06 22:40:59,318 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) [2023-11-06 22:40:59,333 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) [2023-11-06 22:40:59,336 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) [2023-11-06 22:40:59,336 INFO L175 Difference]: Start difference. First operand has 132 places, 99 transitions, 1684 flow. Second operand 36 states and 2594 transitions. [2023-11-06 22:40:59,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 245 transitions, 4946 flow [2023-11-06 22:40:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 245 transitions, 4324 flow, removed 274 selfloop flow, removed 14 redundant places. [2023-11-06 22:40:59,492 INFO L231 Difference]: Finished difference. Result has 171 places, 136 transitions, 2732 flow [2023-11-06 22:40:59,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2732, PETRI_PLACES=171, PETRI_TRANSITIONS=136} [2023-11-06 22:40:59,494 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2023-11-06 22:40:59,494 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 136 transitions, 2732 flow [2023-11-06 22:40:59,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 68.5) internal successors, (1507), 22 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:59,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:59,495 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:59,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:40:59,702 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)] === [2023-11-06 22:40:59,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -92387390, now seen corresponding path program 8 times [2023-11-06 22:40:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:59,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091667134] [2023-11-06 22:40:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:00,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:00,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091667134] [2023-11-06 22:41:00,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091667134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:00,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483926833] [2023-11-06 22:41:00,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:00,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:00,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:00,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:41:00,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:41:00,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:00,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:41:00,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:00,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483926833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:00,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-11-06 22:41:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124464370] [2023-11-06 22:41:00,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:00,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:41:00,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:41:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:41:01,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:41:01,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 136 transitions, 2732 flow. Second operand has 34 states, 34 states have (on average 68.32352941176471) internal successors, (2323), 34 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:01,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:01,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:41:01,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:02,461 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-11-06 22:41:02,462 INFO L125 PetriNetUnfolderBase]: For 93229/93229 co-relation queries the response was YES. [2023-11-06 22:41:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14049 conditions, 1211 events. 664/1211 cut-off events. For 93229/93229 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5484 event pairs, 105 based on Foata normal form. 24/1235 useless extension candidates. Maximal degree in co-relation 13979. Up to 467 conditions per place. [2023-11-06 22:41:02,487 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 113 selfloop transitions, 98 changer transitions 71/282 dead transitions. [2023-11-06 22:41:02,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 282 transitions, 7029 flow [2023-11-06 22:41:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 22:41:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-06 22:41:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2717 transitions. [2023-11-06 22:41:02,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281437125748503 [2023-11-06 22:41:02,587 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2717 transitions. [2023-11-06 22:41:02,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2717 transitions. [2023-11-06 22:41:02,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:02,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2717 transitions. [2023-11-06 22:41:02,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 71.5) internal successors, (2717), 38 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:02,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 167.0) internal successors, (6513), 39 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:02,632 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 167.0) internal successors, (6513), 39 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:02,632 INFO L175 Difference]: Start difference. First operand has 171 places, 136 transitions, 2732 flow. Second operand 38 states and 2717 transitions. [2023-11-06 22:41:02,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 282 transitions, 7029 flow [2023-11-06 22:41:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 282 transitions, 5427 flow, removed 777 selfloop flow, removed 12 redundant places. [2023-11-06 22:41:03,038 INFO L231 Difference]: Finished difference. Result has 204 places, 170 transitions, 3017 flow [2023-11-06 22:41:03,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3017, PETRI_PLACES=204, PETRI_TRANSITIONS=170} [2023-11-06 22:41:03,039 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 180 predicate places. [2023-11-06 22:41:03,039 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 170 transitions, 3017 flow [2023-11-06 22:41:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 68.32352941176471) internal successors, (2323), 34 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:03,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:03,041 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:03,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:03,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:41:03,250 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)] === [2023-11-06 22:41:03,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1807625914, now seen corresponding path program 9 times [2023-11-06 22:41:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215352506] [2023-11-06 22:41:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:03,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:03,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215352506] [2023-11-06 22:41:03,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215352506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:03,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127987810] [2023-11-06 22:41:03,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:41:03,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:03,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:03,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:03,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:41:03,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 22:41:03,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:03,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:41:03,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:03,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127987810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:04,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-06 22:41:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675171503] [2023-11-06 22:41:04,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:04,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:41:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:41:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:41:04,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:41:04,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 170 transitions, 3017 flow. Second operand has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:04,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:04,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:41:04,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:06,651 INFO L124 PetriNetUnfolderBase]: 852/1575 cut-off events. [2023-11-06 22:41:06,651 INFO L125 PetriNetUnfolderBase]: For 154003/154003 co-relation queries the response was YES. [2023-11-06 22:41:06,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17959 conditions, 1575 events. 852/1575 cut-off events. For 154003/154003 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7672 event pairs, 34 based on Foata normal form. 32/1607 useless extension candidates. Maximal degree in co-relation 17884. Up to 643 conditions per place. [2023-11-06 22:41:06,694 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 83 selfloop transitions, 184 changer transitions 83/350 dead transitions. [2023-11-06 22:41:06,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 350 transitions, 7776 flow [2023-11-06 22:41:06,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 22:41:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-06 22:41:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3156 transitions. [2023-11-06 22:41:06,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295046271094175 [2023-11-06 22:41:06,710 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3156 transitions. [2023-11-06 22:41:06,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3156 transitions. [2023-11-06 22:41:06,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:06,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3156 transitions. [2023-11-06 22:41:06,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.72727272727273) internal successors, (3156), 44 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:06,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:06,735 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:06,736 INFO L175 Difference]: Start difference. First operand has 204 places, 170 transitions, 3017 flow. Second operand 44 states and 3156 transitions. [2023-11-06 22:41:06,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 350 transitions, 7776 flow [2023-11-06 22:41:07,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 350 transitions, 7122 flow, removed 262 selfloop flow, removed 17 redundant places. [2023-11-06 22:41:07,445 INFO L231 Difference]: Finished difference. Result has 243 places, 219 transitions, 4324 flow [2023-11-06 22:41:07,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2551, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4324, PETRI_PLACES=243, PETRI_TRANSITIONS=219} [2023-11-06 22:41:07,447 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 219 predicate places. [2023-11-06 22:41:07,447 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 219 transitions, 4324 flow [2023-11-06 22:41:07,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:07,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:07,448 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:07,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:41:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:41:07,654 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)] === [2023-11-06 22:41:07,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1494720574, now seen corresponding path program 10 times [2023-11-06 22:41:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:07,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036125408] [2023-11-06 22:41:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:08,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036125408] [2023-11-06 22:41:08,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036125408] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725682808] [2023-11-06 22:41:08,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:41:08,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:08,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:08,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:08,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:41:08,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:41:08,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:08,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:41:08,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:08,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725682808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:08,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-06 22:41:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447400871] [2023-11-06 22:41:08,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:08,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:41:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:41:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:41:08,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:41:08,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 219 transitions, 4324 flow. Second operand has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:08,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:08,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:41:08,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:10,924 INFO L124 PetriNetUnfolderBase]: 964/1775 cut-off events. [2023-11-06 22:41:10,925 INFO L125 PetriNetUnfolderBase]: For 245545/245545 co-relation queries the response was YES. [2023-11-06 22:41:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 1775 events. 964/1775 cut-off events. For 245545/245545 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8791 event pairs, 12 based on Foata normal form. 36/1811 useless extension candidates. Maximal degree in co-relation 22637. Up to 731 conditions per place. [2023-11-06 22:41:10,966 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 69 selfloop transitions, 230 changer transitions 81/380 dead transitions. [2023-11-06 22:41:10,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 380 transitions, 9408 flow [2023-11-06 22:41:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 22:41:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-06 22:41:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3163 transitions. [2023-11-06 22:41:10,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304572672836146 [2023-11-06 22:41:10,977 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3163 transitions. [2023-11-06 22:41:10,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3163 transitions. [2023-11-06 22:41:10,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:10,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3163 transitions. [2023-11-06 22:41:10,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 71.88636363636364) internal successors, (3163), 44 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:11,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:11,006 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 167.0) internal successors, (7515), 45 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:11,006 INFO L175 Difference]: Start difference. First operand has 243 places, 219 transitions, 4324 flow. Second operand 44 states and 3163 transitions. [2023-11-06 22:41:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 380 transitions, 9408 flow [2023-11-06 22:41:11,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 380 transitions, 8506 flow, removed 364 selfloop flow, removed 18 redundant places. [2023-11-06 22:41:11,988 INFO L231 Difference]: Finished difference. Result has 282 places, 249 transitions, 5390 flow [2023-11-06 22:41:11,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5390, PETRI_PLACES=282, PETRI_TRANSITIONS=249} [2023-11-06 22:41:11,989 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 258 predicate places. [2023-11-06 22:41:11,989 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 249 transitions, 5390 flow [2023-11-06 22:41:11,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 68.34285714285714) internal successors, (2392), 35 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:11,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:11,991 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:11,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:12,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:41:12,197 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)] === [2023-11-06 22:41:12,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 841810370, now seen corresponding path program 11 times [2023-11-06 22:41:12,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174612836] [2023-11-06 22:41:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174612836] [2023-11-06 22:41:12,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174612836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:12,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354270585] [2023-11-06 22:41:12,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:41:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:12,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:12,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:41:12,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-06 22:41:12,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:12,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:41:12,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:12,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:13,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354270585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:13,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:13,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-11-06 22:41:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398452408] [2023-11-06 22:41:13,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:13,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-06 22:41:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-06 22:41:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:41:13,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:41:13,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 249 transitions, 5390 flow. Second operand has 40 states, 40 states have (on average 68.275) internal successors, (2731), 40 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:13,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:13,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:41:13,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:16,130 INFO L124 PetriNetUnfolderBase]: 1060/1947 cut-off events. [2023-11-06 22:41:16,131 INFO L125 PetriNetUnfolderBase]: For 379691/379691 co-relation queries the response was YES. [2023-11-06 22:41:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 1947 events. 1060/1947 cut-off events. For 379691/379691 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9697 event pairs, 17 based on Foata normal form. 28/1975 useless extension candidates. Maximal degree in co-relation 28517. Up to 791 conditions per place. [2023-11-06 22:41:16,172 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 80 selfloop transitions, 252 changer transitions 90/422 dead transitions. [2023-11-06 22:41:16,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 422 transitions, 11967 flow [2023-11-06 22:41:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 22:41:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 22:41:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3449 transitions. [2023-11-06 22:41:16,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43026447105788423 [2023-11-06 22:41:16,180 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3449 transitions. [2023-11-06 22:41:16,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3449 transitions. [2023-11-06 22:41:16,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:16,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3449 transitions. [2023-11-06 22:41:16,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 71.85416666666667) internal successors, (3449), 48 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,205 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) [2023-11-06 22:41:16,208 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) [2023-11-06 22:41:16,208 INFO L175 Difference]: Start difference. First operand has 282 places, 249 transitions, 5390 flow. Second operand 48 states and 3449 transitions. [2023-11-06 22:41:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 422 transitions, 11967 flow [2023-11-06 22:41:17,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 422 transitions, 10188 flow, removed 747 selfloop flow, removed 28 redundant places. [2023-11-06 22:41:17,989 INFO L231 Difference]: Finished difference. Result has 313 places, 273 transitions, 5957 flow [2023-11-06 22:41:17,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5957, PETRI_PLACES=313, PETRI_TRANSITIONS=273} [2023-11-06 22:41:17,990 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 289 predicate places. [2023-11-06 22:41:17,990 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 273 transitions, 5957 flow [2023-11-06 22:41:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 68.275) internal successors, (2731), 40 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:17,991 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:17,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:18,193 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)] === [2023-11-06 22:41:18,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1208372604, now seen corresponding path program 12 times [2023-11-06 22:41:18,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:18,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874679778] [2023-11-06 22:41:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:18,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874679778] [2023-11-06 22:41:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874679778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77786705] [2023-11-06 22:41:18,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:41:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:18,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:18,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:41:19,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-06 22:41:19,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:19,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:41:19,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:19,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77786705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:19,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-11-06 22:41:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207342620] [2023-11-06 22:41:19,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:41:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:41:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:41:19,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:41:19,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 273 transitions, 5957 flow. Second operand has 25 states, 25 states have (on average 68.2) internal successors, (1705), 25 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:19,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:19,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:41:19,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:21,714 INFO L124 PetriNetUnfolderBase]: 1088/1995 cut-off events. [2023-11-06 22:41:21,714 INFO L125 PetriNetUnfolderBase]: For 432459/432459 co-relation queries the response was YES. [2023-11-06 22:41:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30701 conditions, 1995 events. 1088/1995 cut-off events. For 432459/432459 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9882 event pairs, 20 based on Foata normal form. 4/1999 useless extension candidates. Maximal degree in co-relation 30588. Up to 795 conditions per place. [2023-11-06 22:41:21,763 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 80 selfloop transitions, 249 changer transitions 78/407 dead transitions. [2023-11-06 22:41:21,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 407 transitions, 11219 flow [2023-11-06 22:41:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-06 22:41:21,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-06 22:41:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3015 transitions. [2023-11-06 22:41:21,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298545765611634 [2023-11-06 22:41:21,771 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3015 transitions. [2023-11-06 22:41:21,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3015 transitions. [2023-11-06 22:41:21,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:21,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3015 transitions. [2023-11-06 22:41:21,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 71.78571428571429) internal successors, (3015), 42 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 167.0) internal successors, (7181), 43 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,888 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 167.0) internal successors, (7181), 43 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,893 INFO L175 Difference]: Start difference. First operand has 313 places, 273 transitions, 5957 flow. Second operand 42 states and 3015 transitions. [2023-11-06 22:41:21,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 407 transitions, 11219 flow [2023-11-06 22:41:24,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 407 transitions, 9308 flow, removed 774 selfloop flow, removed 34 redundant places. [2023-11-06 22:41:24,195 INFO L231 Difference]: Finished difference. Result has 324 places, 280 transitions, 5412 flow [2023-11-06 22:41:24,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5412, PETRI_PLACES=324, PETRI_TRANSITIONS=280} [2023-11-06 22:41:24,196 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 300 predicate places. [2023-11-06 22:41:24,196 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 280 transitions, 5412 flow [2023-11-06 22:41:24,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 68.2) internal successors, (1705), 25 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:24,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:24,197 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:24,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:24,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-06 22:41:24,404 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:41:24,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 735830513, now seen corresponding path program 13 times [2023-11-06 22:41:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985134689] [2023-11-06 22:41:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:41:24,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:41:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:41:24,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:41:24,525 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:41:24,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-06 22:41:24,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-06 22:41:24,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-06 22:41:24,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-06 22:41:24,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-06 22:41:24,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-06 22:41:24,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-06 22:41:24,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-06 22:41:24,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:41:24,531 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:24,537 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:41:24,538 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:41:24,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:41:24 BasicIcfg [2023-11-06 22:41:24,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:41:24,657 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:41:24,657 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:41:24,657 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:41:24,658 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:43" (3/4) ... [2023-11-06 22:41:24,661 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:41:24,662 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:41:24,663 INFO L158 Benchmark]: Toolchain (without parser) took 41975.95ms. Allocated memory was 132.1MB in the beginning and 903.9MB in the end (delta: 771.8MB). Free memory was 86.4MB in the beginning and 667.6MB in the end (delta: -581.2MB). Peak memory consumption was 192.0MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,664 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:41:24,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.86ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 103.2MB in the end (delta: -16.8MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.58ms. Allocated memory is still 132.1MB. Free memory was 102.5MB in the beginning and 100.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,665 INFO L158 Benchmark]: Boogie Preprocessor took 58.74ms. Allocated memory is still 132.1MB. Free memory was 100.5MB in the beginning and 99.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,666 INFO L158 Benchmark]: RCFGBuilder took 509.92ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 85.9MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,666 INFO L158 Benchmark]: TraceAbstraction took 40734.70ms. Allocated memory was 132.1MB in the beginning and 903.9MB in the end (delta: 771.8MB). Free memory was 85.2MB in the beginning and 668.6MB in the end (delta: -583.5MB). Peak memory consumption was 190.4MB. Max. memory is 16.1GB. [2023-11-06 22:41:24,670 INFO L158 Benchmark]: Witness Printer took 5.69ms. Allocated memory is still 903.9MB. Free memory was 668.6MB in the beginning and 667.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:41:24,672 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.86ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 103.2MB in the end (delta: -16.8MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.58ms. Allocated memory is still 132.1MB. Free memory was 102.5MB in the beginning and 100.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.74ms. Allocated memory is still 132.1MB. Free memory was 100.5MB in the beginning and 99.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 509.92ms. Allocated memory is still 132.1MB. Free memory was 99.1MB in the beginning and 85.9MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 40734.70ms. Allocated memory was 132.1MB in the beginning and 903.9MB in the end (delta: 771.8MB). Free memory was 85.2MB in the beginning and 668.6MB in the end (delta: -583.5MB). Peak memory consumption was 190.4MB. Max. memory is 16.1GB. * Witness Printer took 5.69ms. Allocated memory is still 903.9MB. Free memory was 668.6MB in the beginning and 667.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 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 - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 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: 40.5s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5027 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4813 mSDsluCounter, 1037 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 969 mSDsCounter, 472 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4704 IncrementalHoareTripleChecker+Invalid, 5176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 472 mSolverCounterUnsat, 68 mSDtfsCounter, 4704 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 217 SyntacticMatches, 18 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8879 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5957occurred in iteration=19, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 2416 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 0/867 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:41:24,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:27,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:27,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:41:27,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:27,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:27,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:27,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:27,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:27,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:27,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:27,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:27,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:27,979 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:27,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:27,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:27,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:27,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:27,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:27,983 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:41:27,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:41:27,985 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:41:27,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:27,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:41:27,987 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:41:27,987 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:41:27,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:41:27,988 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:27,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:27,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:27,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:27,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:27,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:27,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:27,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:27,994 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:41:27,994 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:41:27,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:27,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:27,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:27,996 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:41:27,996 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:27,997 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_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-06 22:41:28,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:28,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:28,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:28,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:28,534 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:28,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-06 22:41:31,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:32,233 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:32,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-06 22:41:32,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/87810ef29/246a54eff5b544db86b60d7c9c9dc70e/FLAG1eb94d841 [2023-11-06 22:41:32,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/data/87810ef29/246a54eff5b544db86b60d7c9c9dc70e [2023-11-06 22:41:32,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:32,301 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:32,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:32,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:32,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:32,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:32" (1/1) ... [2023-11-06 22:41:32,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1056d2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:32, skipping insertion in model container [2023-11-06 22:41:32,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:32" (1/1) ... [2023-11-06 22:41:32,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:32,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:32,956 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:33,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:33,113 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:33,113 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:33,122 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:33,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33 WrapperNode [2023-11-06 22:41:33,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:33,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:33,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:33,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:33,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,245 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-11-06 22:41:33,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:33,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:33,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:33,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:33,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:33,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:33,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:33,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:33,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:33,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:41:33,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:41:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:41:33,439 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:41:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:41:33,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:41:33,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:41:33,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:33,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:33,443 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:41:33,604 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:33,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:33,896 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:33,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:33,905 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:41:33,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:33 BoogieIcfgContainer [2023-11-06 22:41:33,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:33,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:33,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:33,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:33,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:32" (1/3) ... [2023-11-06 22:41:33,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adde266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:33, skipping insertion in model container [2023-11-06 22:41:33,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (2/3) ... [2023-11-06 22:41:33,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adde266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:33, skipping insertion in model container [2023-11-06 22:41:33,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:33" (3/3) ... [2023-11-06 22:41:33,925 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-06 22:41:33,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:33,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:41:33,951 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:41:34,089 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:41:34,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 174 flow [2023-11-06 22:41:34,212 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-06 22:41:34,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 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. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-06 22:41:34,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 174 flow [2023-11-06 22:41:34,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 168 flow [2023-11-06 22:41:34,235 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:41:34,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-06 22:41:34,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 81 transitions, 168 flow [2023-11-06 22:41:34,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 168 flow [2023-11-06 22:41:34,309 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-06 22:41:34,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:34,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 81 events. 6/81 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. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-06 22:41:34,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-06 22:41:42,922 INFO L134 LiptonReduction]: Checked pairs total: 1503 [2023-11-06 22:41:42,922 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-11-06 22:41:42,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:42,946 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;@6f6855dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:42,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 22:41:42,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:41:42,948 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:41:42,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:42,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:42,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:41:42,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:41:42,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:42,956 INFO L85 PathProgramCache]: Analyzing trace with hash 333, now seen corresponding path program 1 times [2023-11-06 22:41:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:42,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044229087] [2023-11-06 22:41:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:42,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:42,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:42,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:42,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:41:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:41:43,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:43,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044229087] [2023-11-06 22:41:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044229087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:43,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:41:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202711649] [2023-11-06 22:41:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:43,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:41:43,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:41:43,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:41:43,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 171 [2023-11-06 22:41:43,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:43,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 171 [2023-11-06 22:41:43,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:43,220 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-06 22:41:43,225 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:41:43,226 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 466 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. [2023-11-06 22:41:43,230 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-06 22:41:43,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-06 22:41:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:41:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:41:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-11-06 22:41:43,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-11-06 22:41:43,252 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-11-06 22:41:43,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-11-06 22:41:43,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:43,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-11-06 22:41:43,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,277 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,279 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 172 transitions. [2023-11-06 22:41:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-06 22:41:43,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:43,285 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-06 22:41:43,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, 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} [2023-11-06 22:41:43,292 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:41:43,293 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-06 22:41:43,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:43,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:41:43,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:43,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:43,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:41:43,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:43,518 INFO L85 PathProgramCache]: Analyzing trace with hash 326034, now seen corresponding path program 1 times [2023-11-06 22:41:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:43,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269764958] [2023-11-06 22:41:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:43,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:43,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:43,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:43,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:41:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:41:43,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:43,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:41:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:43,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:41:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:43,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269764958] [2023-11-06 22:41:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269764958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:43,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568854085] [2023-11-06 22:41:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:43,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 171 [2023-11-06 22:41:43,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:43,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 171 [2023-11-06 22:41:43,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:43,938 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-06 22:41:43,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:43,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 356 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-11-06 22:41:43,941 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-06 22:41:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-06 22:41:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:43,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-06 22:41:43,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580896686159844 [2023-11-06 22:41:43,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-06 22:41:43,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-06 22:41:43,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:43,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-06 22:41:43,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,965 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 235 transitions. [2023-11-06 22:41:43,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-06 22:41:43,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:43,967 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-06 22:41:43,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, 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} [2023-11-06 22:41:43,968 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:41:43,969 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-06 22:41:43,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:43,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:41:43,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:44,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:44,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:41:44,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash 326036, now seen corresponding path program 1 times [2023-11-06 22:41:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582555611] [2023-11-06 22:41:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:44,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:44,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:41:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:41:44,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:44,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:41:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:41:44,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:41:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:44,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582555611] [2023-11-06 22:41:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582555611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:44,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:44,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074969666] [2023-11-06 22:41:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:44,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:44,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:44,521 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-06 22:41:44,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:44,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 341 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-11-06 22:41:44,524 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-06 22:41:44,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-06 22:41:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-06 22:41:44,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-11-06 22:41:44,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-06 22:41:44,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-06 22:41:44,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:44,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-06 22:41:44,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,533 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 225 transitions. [2023-11-06 22:41:44,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-06 22:41:44,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:44,535 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-06 22:41:44,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, 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} [2023-11-06 22:41:44,536 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-06 22:41:44,537 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-06 22:41:44,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:44,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:41:44,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-06 22:41:44,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:44,750 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)] === [2023-11-06 22:41:44,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1123191904, now seen corresponding path program 1 times [2023-11-06 22:41:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:44,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100107726] [2023-11-06 22:41:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:44,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:44,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:41:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:44,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:44,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:44,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100107726] [2023-11-06 22:41:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100107726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:44,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102581936] [2023-11-06 22:41:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:44,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:44,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 171 [2023-11-06 22:41:44,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:44,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 171 [2023-11-06 22:41:44,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:45,153 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-06 22:41:45,154 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:41:45,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-11-06 22:41:45,158 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-06 22:41:45,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-11-06 22:41:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-11-06 22:41:45,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2023-11-06 22:41:45,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-11-06 22:41:45,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-11-06 22:41:45,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:45,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-11-06 22:41:45,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,169 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 385 transitions. [2023-11-06 22:41:45,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-11-06 22:41:45,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:45,172 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-11-06 22:41:45,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-11-06 22:41:45,174 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-11-06 22:41:45,174 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-11-06 22:41:45,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:45,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:45,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:45,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:45,387 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)] === [2023-11-06 22:41:45,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 459211080, now seen corresponding path program 1 times [2023-11-06 22:41:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863261882] [2023-11-06 22:41:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:45,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:45,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:41:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:45,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:41:45,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:45,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:45,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863261882] [2023-11-06 22:41:45,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863261882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:45,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:45,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561255207] [2023-11-06 22:41:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:45,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 171 [2023-11-06 22:41:45,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:45,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 171 [2023-11-06 22:41:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:46,145 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-06 22:41:46,146 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 22:41:46,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 630 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-11-06 22:41:46,148 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-11-06 22:41:46,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-11-06 22:41:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:41:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-11-06 22:41:46,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2023-11-06 22:41:46,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-11-06 22:41:46,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-11-06 22:41:46,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:46,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-11-06 22:41:46,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,161 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,161 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 272 transitions. [2023-11-06 22:41:46,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-11-06 22:41:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:46,164 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-11-06 22:41:46,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-06 22:41:46,165 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-11-06 22:41:46,165 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-11-06 22:41:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:46,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:46,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:46,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:46,378 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)] === [2023-11-06 22:41:46,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1384520660, now seen corresponding path program 1 times [2023-11-06 22:41:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:46,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888813010] [2023-11-06 22:41:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:46,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:46,382 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:46,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:41:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:46,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:46,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:46,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:46,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888813010] [2023-11-06 22:41:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888813010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:46,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562901880] [2023-11-06 22:41:46,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:46,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:46,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:46,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:46,706 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-06 22:41:46,706 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-06 22:41:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 444 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-11-06 22:41:46,709 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-11-06 22:41:46,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-11-06 22:41:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-11-06 22:41:46,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43508771929824563 [2023-11-06 22:41:46,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-11-06 22:41:46,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-11-06 22:41:46,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:46,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-11-06 22:41:46,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,719 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 372 transitions. [2023-11-06 22:41:46,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-11-06 22:41:46,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:46,722 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-11-06 22:41:46,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-11-06 22:41:46,723 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-11-06 22:41:46,723 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-11-06 22:41:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:46,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:46,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:46,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:46,942 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)] === [2023-11-06 22:41:46,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1350136793, now seen corresponding path program 1 times [2023-11-06 22:41:46,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:46,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102485809] [2023-11-06 22:41:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:46,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:46,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:41:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:47,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:47,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:47,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:47,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102485809] [2023-11-06 22:41:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102485809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974384356] [2023-11-06 22:41:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:47,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:47,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:47,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:47,356 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-06 22:41:47,356 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-06 22:41:47,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 715 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-11-06 22:41:47,360 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-06 22:41:47,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-11-06 22:41:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-11-06 22:41:47,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346978557504873 [2023-11-06 22:41:47,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-11-06 22:41:47,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-11-06 22:41:47,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:47,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-11-06 22:41:47,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,373 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 446 transitions. [2023-11-06 22:41:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-11-06 22:41:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:47,383 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-11-06 22:41:47,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-11-06 22:41:47,386 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-11-06 22:41:47,386 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-11-06 22:41:47,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:47,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:47,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-06 22:41:47,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:47,603 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)] === [2023-11-06 22:41:47,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:47,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1350158183, now seen corresponding path program 2 times [2023-11-06 22:41:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61338174] [2023-11-06 22:41:47,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:47,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:47,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:47,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:47,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:41:47,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:47,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:47,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:47,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:47,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:47,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61338174] [2023-11-06 22:41:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61338174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371695926] [2023-11-06 22:41:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:47,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:47,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:47,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:47,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:47,967 INFO L124 PetriNetUnfolderBase]: 124/219 cut-off events. [2023-11-06 22:41:47,968 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2023-11-06 22:41:47,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 703 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-11-06 22:41:47,971 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-11-06 22:41:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-11-06 22:41:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2023-11-06 22:41:47,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337231968810916 [2023-11-06 22:41:47,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2023-11-06 22:41:47,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2023-11-06 22:41:47,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:47,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2023-11-06 22:41:47,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,982 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,982 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 445 transitions. [2023-11-06 22:41:47,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-11-06 22:41:47,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-11-06 22:41:47,988 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-11-06 22:41:47,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-11-06 22:41:47,989 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-11-06 22:41:47,990 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-11-06 22:41:47,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:47,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:48,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:48,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:48,204 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)] === [2023-11-06 22:41:48,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash -963366845, now seen corresponding path program 1 times [2023-11-06 22:41:48,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:48,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156961061] [2023-11-06 22:41:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:48,208 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:48,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:41:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:48,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:48,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:48,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:48,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156961061] [2023-11-06 22:41:48,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156961061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:48,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:48,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840078364] [2023-11-06 22:41:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:48,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:48,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:48,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:48,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:48,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:48,782 INFO L124 PetriNetUnfolderBase]: 172/303 cut-off events. [2023-11-06 22:41:48,782 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2023-11-06 22:41:48,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1062 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-11-06 22:41:48,787 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-11-06 22:41:48,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-11-06 22:41:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:41:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:41:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 664 transitions. [2023-11-06 22:41:48,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314489928525016 [2023-11-06 22:41:48,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 664 transitions. [2023-11-06 22:41:48,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 664 transitions. [2023-11-06 22:41:48,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:48,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 664 transitions. [2023-11-06 22:41:48,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,803 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 664 transitions. [2023-11-06 22:41:48,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-11-06 22:41:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:48,811 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-11-06 22:41:48,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-11-06 22:41:48,812 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-11-06 22:41:48,813 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-11-06 22:41:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:48,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:48,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:49,028 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)] === [2023-11-06 22:41:49,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -963345455, now seen corresponding path program 2 times [2023-11-06 22:41:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:49,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671843664] [2023-11-06 22:41:49,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:49,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:49,031 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:49,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:41:49,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:49,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:49,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:49,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:49,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:49,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671843664] [2023-11-06 22:41:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671843664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616557051] [2023-11-06 22:41:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:49,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:49,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:49,486 INFO L124 PetriNetUnfolderBase]: 168/299 cut-off events. [2023-11-06 22:41:49,486 INFO L125 PetriNetUnfolderBase]: For 1652/1652 co-relation queries the response was YES. [2023-11-06 22:41:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1652/1652 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1091 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-11-06 22:41:49,490 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-11-06 22:41:49,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-11-06 22:41:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:41:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2023-11-06 22:41:49,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-11-06 22:41:49,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2023-11-06 22:41:49,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2023-11-06 22:41:49,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:49,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2023-11-06 22:41:49,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,499 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 518 transitions. [2023-11-06 22:41:49,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-11-06 22:41:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-11-06 22:41:49,511 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-11-06 22:41:49,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-11-06 22:41:49,512 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-11-06 22:41:49,512 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-11-06 22:41:49,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:49,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:49,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:49,725 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)] === [2023-11-06 22:41:49,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash -964433555, now seen corresponding path program 3 times [2023-11-06 22:41:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574641146] [2023-11-06 22:41:49,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:41:49,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:49,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:49,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:49,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:41:49,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:41:49,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:49,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:41:49,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:49,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:49,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574641146] [2023-11-06 22:41:49,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574641146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:49,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:49,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:49,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416666925] [2023-11-06 22:41:49,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:49,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:50,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:50,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:50,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:50,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:50,289 INFO L124 PetriNetUnfolderBase]: 164/295 cut-off events. [2023-11-06 22:41:50,290 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2023-11-06 22:41:50,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1101 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-11-06 22:41:50,294 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-11-06 22:41:50,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-11-06 22:41:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:41:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2023-11-06 22:41:50,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-11-06 22:41:50,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2023-11-06 22:41:50,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2023-11-06 22:41:50,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:50,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2023-11-06 22:41:50,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,305 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 518 transitions. [2023-11-06 22:41:50,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-11-06 22:41:50,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:50,317 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-11-06 22:41:50,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-11-06 22:41:50,318 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-11-06 22:41:50,318 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-11-06 22:41:50,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:50,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:50,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:50,532 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)] === [2023-11-06 22:41:50,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash -963749075, now seen corresponding path program 4 times [2023-11-06 22:41:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692338874] [2023-11-06 22:41:50,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:41:50,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:50,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:50,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:50,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:41:50,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:41:50,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:50,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:50,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:50,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:50,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692338874] [2023-11-06 22:41:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692338874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:50,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:50,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305444413] [2023-11-06 22:41:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:50,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:50,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:50,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:50,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:51,048 INFO L124 PetriNetUnfolderBase]: 176/315 cut-off events. [2023-11-06 22:41:51,049 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2023-11-06 22:41:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1177 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-11-06 22:41:51,053 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-11-06 22:41:51,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-11-06 22:41:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:41:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 517 transitions. [2023-11-06 22:41:51,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319131161236424 [2023-11-06 22:41:51,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 517 transitions. [2023-11-06 22:41:51,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 517 transitions. [2023-11-06 22:41:51,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:51,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 517 transitions. [2023-11-06 22:41:51,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,064 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 517 transitions. [2023-11-06 22:41:51,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-11-06 22:41:51,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-06 22:41:51,076 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-11-06 22:41:51,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-11-06 22:41:51,077 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-11-06 22:41:51,078 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-11-06 22:41:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:51,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:51,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:51,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:51,292 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)] === [2023-11-06 22:41:51,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:51,292 INFO L85 PathProgramCache]: Analyzing trace with hash 201097033, now seen corresponding path program 5 times [2023-11-06 22:41:51,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:51,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382371679] [2023-11-06 22:41:51,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:41:51,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:51,295 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:51,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:41:51,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:41:51,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:51,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:41:51,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:51,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:51,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382371679] [2023-11-06 22:41:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382371679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:51,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:41:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:41:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877009502] [2023-11-06 22:41:51,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:51,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:51,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:51,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:51,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:51,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:51,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:52,824 INFO L124 PetriNetUnfolderBase]: 224/395 cut-off events. [2023-11-06 22:41:52,825 INFO L125 PetriNetUnfolderBase]: For 4433/4433 co-relation queries the response was YES. [2023-11-06 22:41:52,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1521 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-11-06 22:41:52,831 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-11-06 22:41:52,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-11-06 22:41:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:41:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:41:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1175 transitions. [2023-11-06 22:41:52,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294590643274854 [2023-11-06 22:41:52,838 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1175 transitions. [2023-11-06 22:41:52,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1175 transitions. [2023-11-06 22:41:52,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:52,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1175 transitions. [2023-11-06 22:41:52,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.4375) internal successors, (1175), 16 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,852 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,852 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1175 transitions. [2023-11-06 22:41:52,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-11-06 22:41:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-06 22:41:52,872 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-11-06 22:41:52,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-11-06 22:41:52,875 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-11-06 22:41:52,875 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-11-06 22:41:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:52,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:52,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:53,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:53,094 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)] === [2023-11-06 22:41:53,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 166927469, now seen corresponding path program 6 times [2023-11-06 22:41:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318795471] [2023-11-06 22:41:53,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:41:53,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:53,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:53,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:53,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:41:53,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:41:53,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:53,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:41:53,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:53,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:53,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:53,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318795471] [2023-11-06 22:41:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318795471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:53,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:41:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:41:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401741198] [2023-11-06 22:41:53,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:53,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:53,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:53,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:53,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:54,363 INFO L124 PetriNetUnfolderBase]: 248/443 cut-off events. [2023-11-06 22:41:54,363 INFO L125 PetriNetUnfolderBase]: For 7883/7883 co-relation queries the response was YES. [2023-11-06 22:41:54,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1706 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2023-11-06 22:41:54,370 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2023-11-06 22:41:54,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2023-11-06 22:41:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:41:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:41:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 881 transitions. [2023-11-06 22:41:54,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293372319688109 [2023-11-06 22:41:54,376 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 881 transitions. [2023-11-06 22:41:54,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 881 transitions. [2023-11-06 22:41:54,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:54,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 881 transitions. [2023-11-06 22:41:54,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 73.41666666666667) internal successors, (881), 12 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,386 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 171.0) internal successors, (2223), 13 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,386 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 881 transitions. [2023-11-06 22:41:54,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2023-11-06 22:41:54,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2023-11-06 22:41:54,413 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2023-11-06 22:41:54,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2023-11-06 22:41:54,414 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-11-06 22:41:54,415 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2023-11-06 22:41:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:54,415 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:54,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:54,626 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)] === [2023-11-06 22:41:54,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash 187483259, now seen corresponding path program 7 times [2023-11-06 22:41:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852092444] [2023-11-06 22:41:54,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:41:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:54,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:54,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:41:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:54,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:41:54,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:54,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:54,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:54,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852092444] [2023-11-06 22:41:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852092444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:54,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:41:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:41:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200986157] [2023-11-06 22:41:54,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:55,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:55,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:55,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:55,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:55,958 INFO L124 PetriNetUnfolderBase]: 336/603 cut-off events. [2023-11-06 22:41:55,958 INFO L125 PetriNetUnfolderBase]: For 12794/12794 co-relation queries the response was YES. [2023-11-06 22:41:55,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2602 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2023-11-06 22:41:55,967 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2023-11-06 22:41:55,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2023-11-06 22:41:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:41:55,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:41:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1175 transitions. [2023-11-06 22:41:55,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294590643274854 [2023-11-06 22:41:55,974 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1175 transitions. [2023-11-06 22:41:55,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1175 transitions. [2023-11-06 22:41:55,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:55,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1175 transitions. [2023-11-06 22:41:55,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.4375) internal successors, (1175), 16 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,985 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 171.0) internal successors, (2907), 17 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,985 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1175 transitions. [2023-11-06 22:41:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2023-11-06 22:41:56,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 22:41:56,018 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2023-11-06 22:41:56,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2023-11-06 22:41:56,019 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-11-06 22:41:56,019 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2023-11-06 22:41:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:56,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:56,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:56,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:56,232 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)] === [2023-11-06 22:41:56,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 188571359, now seen corresponding path program 8 times [2023-11-06 22:41:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765614716] [2023-11-06 22:41:56,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:56,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:56,234 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:56,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:41:56,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:41:56,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:56,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:41:56,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:56,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:56,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765614716] [2023-11-06 22:41:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765614716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:56,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:41:56,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:41:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271452645] [2023-11-06 22:41:56,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:41:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:41:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:41:56,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:56,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:56,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:56,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:57,719 INFO L124 PetriNetUnfolderBase]: 384/691 cut-off events. [2023-11-06 22:41:57,719 INFO L125 PetriNetUnfolderBase]: For 25124/25124 co-relation queries the response was YES. [2023-11-06 22:41:57,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 25124/25124 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3045 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2023-11-06 22:41:57,730 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2023-11-06 22:41:57,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2023-11-06 22:41:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:41:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:41:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1321 transitions. [2023-11-06 22:41:57,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42917478882391163 [2023-11-06 22:41:57,736 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1321 transitions. [2023-11-06 22:41:57,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1321 transitions. [2023-11-06 22:41:57,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:57,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1321 transitions. [2023-11-06 22:41:57,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,753 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1321 transitions. [2023-11-06 22:41:57,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2023-11-06 22:41:57,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2023-11-06 22:41:57,829 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2023-11-06 22:41:57,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2023-11-06 22:41:57,831 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-11-06 22:41:57,831 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2023-11-06 22:41:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.83333333333333) internal successors, (838), 12 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:57,832 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:57,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:58,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:58,045 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)] === [2023-11-06 22:41:58,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1251788741, now seen corresponding path program 9 times [2023-11-06 22:41:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:41:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567235891] [2023-11-06 22:41:58,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:41:58,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:41:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:41:58,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:41:58,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:41:58,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:41:58,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:58,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:41:58,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:58,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:58,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:41:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567235891] [2023-11-06 22:41:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567235891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:58,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:41:58,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-06 22:41:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112105155] [2023-11-06 22:41:58,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:41:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:41:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:41:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:41:58,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:41:58,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 69.66666666666667) internal successors, (1254), 18 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:58,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:41:58,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:00,570 INFO L124 PetriNetUnfolderBase]: 488/891 cut-off events. [2023-11-06 22:42:00,571 INFO L125 PetriNetUnfolderBase]: For 44047/44047 co-relation queries the response was YES. [2023-11-06 22:42:00,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 44047/44047 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4311 event pairs, 92 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2023-11-06 22:42:00,585 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2023-11-06 22:42:00,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2023-11-06 22:42:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:42:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:42:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1754 transitions. [2023-11-06 22:42:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273879142300195 [2023-11-06 22:42:00,591 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1754 transitions. [2023-11-06 22:42:00,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1754 transitions. [2023-11-06 22:42:00,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:00,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1754 transitions. [2023-11-06 22:42:00,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 73.08333333333333) internal successors, (1754), 24 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 171.0) internal successors, (4275), 25 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,608 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 171.0) internal successors, (4275), 25 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,608 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1754 transitions. [2023-11-06 22:42:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2023-11-06 22:42:00,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-11-06 22:42:00,706 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2023-11-06 22:42:00,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2023-11-06 22:42:00,707 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2023-11-06 22:42:00,707 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2023-11-06 22:42:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.66666666666667) internal successors, (1254), 18 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:00,708 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:00,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:00,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:00,919 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)] === [2023-11-06 22:42:00,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:00,920 INFO L85 PathProgramCache]: Analyzing trace with hash -682133651, now seen corresponding path program 10 times [2023-11-06 22:42:00,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:00,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281157154] [2023-11-06 22:42:00,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:42:00,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:00,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:00,921 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:00,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:42:00,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:42:00,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:00,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:42:00,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:01,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:01,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281157154] [2023-11-06 22:42:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281157154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:01,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-06 22:42:01,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144785314] [2023-11-06 22:42:01,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:42:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:42:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:42:01,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:01,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 69.66666666666667) internal successors, (1254), 18 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:01,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:01,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:05,142 INFO L124 PetriNetUnfolderBase]: 780/1403 cut-off events. [2023-11-06 22:42:05,142 INFO L125 PetriNetUnfolderBase]: For 89613/89613 co-relation queries the response was YES. [2023-11-06 22:42:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 1403 events. 780/1403 cut-off events. For 89613/89613 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6953 event pairs, 25 based on Foata normal form. 32/1435 useless extension candidates. Maximal degree in co-relation 13929. Up to 496 conditions per place. [2023-11-06 22:42:05,169 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 125 selfloop transitions, 163 changer transitions 23/311 dead transitions. [2023-11-06 22:42:05,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 311 transitions, 6567 flow [2023-11-06 22:42:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 22:42:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-06 22:42:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2777 transitions. [2023-11-06 22:42:05,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42736226531240384 [2023-11-06 22:42:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2777 transitions. [2023-11-06 22:42:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2777 transitions. [2023-11-06 22:42:05,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:05,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2777 transitions. [2023-11-06 22:42:05,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 73.07894736842105) internal successors, (2777), 38 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 171.0) internal successors, (6669), 39 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,195 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 171.0) internal successors, (6669), 39 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,195 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 38 states and 2777 transitions. [2023-11-06 22:42:05,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 311 transitions, 6567 flow [2023-11-06 22:42:05,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 311 transitions, 5804 flow, removed 359 selfloop flow, removed 10 redundant places. [2023-11-06 22:42:05,422 INFO L231 Difference]: Finished difference. Result has 208 places, 207 transitions, 4673 flow [2023-11-06 22:42:05,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4673, PETRI_PLACES=208, PETRI_TRANSITIONS=207} [2023-11-06 22:42:05,423 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 184 predicate places. [2023-11-06 22:42:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 207 transitions, 4673 flow [2023-11-06 22:42:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.66666666666667) internal successors, (1254), 18 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:05,425 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:05,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:05,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:05,636 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)] === [2023-11-06 22:42:05,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 329391455, now seen corresponding path program 11 times [2023-11-06 22:42:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878856589] [2023-11-06 22:42:05,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:42:05,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:05,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:05,638 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:05,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:42:05,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-06 22:42:05,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:05,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:42:05,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:05,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:06,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878856589] [2023-11-06 22:42:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878856589] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:06,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:06,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2023-11-06 22:42:06,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904183952] [2023-11-06 22:42:06,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:06,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:42:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:42:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:42:06,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:06,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 207 transitions, 4673 flow. Second operand has 20 states, 20 states have (on average 69.6) internal successors, (1392), 20 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:06,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:06,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:09,489 INFO L124 PetriNetUnfolderBase]: 856/1551 cut-off events. [2023-11-06 22:42:09,489 INFO L125 PetriNetUnfolderBase]: For 159432/159432 co-relation queries the response was YES. [2023-11-06 22:42:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17192 conditions, 1551 events. 856/1551 cut-off events. For 159432/159432 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7896 event pairs, 39 based on Foata normal form. 60/1611 useless extension candidates. Maximal degree in co-relation 17104. Up to 564 conditions per place. [2023-11-06 22:42:09,532 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 91 selfloop transitions, 188 changer transitions 58/337 dead transitions. [2023-11-06 22:42:09,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 337 transitions, 8190 flow [2023-11-06 22:42:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:42:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:42:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2340 transitions. [2023-11-06 22:42:09,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276315789473684 [2023-11-06 22:42:09,550 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2340 transitions. [2023-11-06 22:42:09,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2340 transitions. [2023-11-06 22:42:09,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:09,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2340 transitions. [2023-11-06 22:42:09,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 73.125) internal successors, (2340), 32 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:09,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 171.0) internal successors, (5643), 33 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:09,572 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 171.0) internal successors, (5643), 33 states have internal predecessors, (5643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:09,573 INFO L175 Difference]: Start difference. First operand has 208 places, 207 transitions, 4673 flow. Second operand 32 states and 2340 transitions. [2023-11-06 22:42:09,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 337 transitions, 8190 flow [2023-11-06 22:42:10,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 337 transitions, 5530 flow, removed 1297 selfloop flow, removed 15 redundant places. [2023-11-06 22:42:10,031 INFO L231 Difference]: Finished difference. Result has 233 places, 243 transitions, 4103 flow [2023-11-06 22:42:10,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4103, PETRI_PLACES=233, PETRI_TRANSITIONS=243} [2023-11-06 22:42:10,031 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 209 predicate places. [2023-11-06 22:42:10,032 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 243 transitions, 4103 flow [2023-11-06 22:42:10,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.6) internal successors, (1392), 20 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:10,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:10,032 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:10,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:10,233 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)] === [2023-11-06 22:42:10,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash 161663255, now seen corresponding path program 12 times [2023-11-06 22:42:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388662215] [2023-11-06 22:42:10,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:42:10,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:10,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:10,236 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:10,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:42:10,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-06 22:42:10,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:10,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:42:10,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:10,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:11,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388662215] [2023-11-06 22:42:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388662215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:11,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:11,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2023-11-06 22:42:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072965227] [2023-11-06 22:42:11,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:42:11,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:11,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:42:11,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:42:11,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:11,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 243 transitions, 4103 flow. Second operand has 22 states, 22 states have (on average 69.45454545454545) internal successors, (1528), 22 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:11,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:11,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:11,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:15,067 INFO L124 PetriNetUnfolderBase]: 1000/1791 cut-off events. [2023-11-06 22:42:15,067 INFO L125 PetriNetUnfolderBase]: For 171828/171828 co-relation queries the response was YES. [2023-11-06 22:42:15,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17633 conditions, 1791 events. 1000/1791 cut-off events. For 171828/171828 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9015 event pairs, 24 based on Foata normal form. 40/1831 useless extension candidates. Maximal degree in co-relation 17539. Up to 468 conditions per place. [2023-11-06 22:42:15,090 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 97 selfloop transitions, 230 changer transitions 66/393 dead transitions. [2023-11-06 22:42:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 393 transitions, 8272 flow [2023-11-06 22:42:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:42:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-06 22:42:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2631 transitions. [2023-11-06 22:42:15,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273879142300195 [2023-11-06 22:42:15,096 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2631 transitions. [2023-11-06 22:42:15,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2631 transitions. [2023-11-06 22:42:15,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:15,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2631 transitions. [2023-11-06 22:42:15,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 73.08333333333333) internal successors, (2631), 36 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 171.0) internal successors, (6327), 37 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,113 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 171.0) internal successors, (6327), 37 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,113 INFO L175 Difference]: Start difference. First operand has 233 places, 243 transitions, 4103 flow. Second operand 36 states and 2631 transitions. [2023-11-06 22:42:15,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 393 transitions, 8272 flow [2023-11-06 22:42:15,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 393 transitions, 7485 flow, removed 318 selfloop flow, removed 20 redundant places. [2023-11-06 22:42:15,532 INFO L231 Difference]: Finished difference. Result has 268 places, 281 transitions, 5757 flow [2023-11-06 22:42:15,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5757, PETRI_PLACES=268, PETRI_TRANSITIONS=281} [2023-11-06 22:42:15,533 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 244 predicate places. [2023-11-06 22:42:15,533 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 281 transitions, 5757 flow [2023-11-06 22:42:15,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 69.45454545454545) internal successors, (1528), 22 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:15,533 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:15,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-06 22:42:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:15,734 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:42:15,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -882390085, now seen corresponding path program 13 times [2023-11-06 22:42:15,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:15,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142231535] [2023-11-06 22:42:15,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:42:15,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:15,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:15,736 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:15,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:42:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:15,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:42:15,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:16,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:17,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142231535] [2023-11-06 22:42:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142231535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:17,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:17,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-11-06 22:42:17,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496459185] [2023-11-06 22:42:17,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:42:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:42:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:42:17,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:17,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 281 transitions, 5757 flow. Second operand has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:17,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:17,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:17,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:23,312 INFO L124 PetriNetUnfolderBase]: 1096/1983 cut-off events. [2023-11-06 22:42:23,313 INFO L125 PetriNetUnfolderBase]: For 255766/255766 co-relation queries the response was YES. [2023-11-06 22:42:23,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 1983 events. 1096/1983 cut-off events. For 255766/255766 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10330 event pairs, 291 based on Foata normal form. 24/2007 useless extension candidates. Maximal degree in co-relation 22596. Up to 1189 conditions per place. [2023-11-06 22:42:23,343 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 256 selfloop transitions, 102 changer transitions 75/433 dead transitions. [2023-11-06 22:42:23,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 433 transitions, 9996 flow [2023-11-06 22:42:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-06 22:42:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-06 22:42:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2904 transitions. [2023-11-06 22:42:23,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245614035087719 [2023-11-06 22:42:23,349 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2904 transitions. [2023-11-06 22:42:23,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2904 transitions. [2023-11-06 22:42:23,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:23,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2904 transitions. [2023-11-06 22:42:23,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 72.6) internal successors, (2904), 40 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:23,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 171.0) internal successors, (7011), 41 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:23,365 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 171.0) internal successors, (7011), 41 states have internal predecessors, (7011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:23,365 INFO L175 Difference]: Start difference. First operand has 268 places, 281 transitions, 5757 flow. Second operand 40 states and 2904 transitions. [2023-11-06 22:42:23,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 433 transitions, 9996 flow [2023-11-06 22:42:24,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 433 transitions, 8500 flow, removed 704 selfloop flow, removed 11 redundant places. [2023-11-06 22:42:24,185 INFO L231 Difference]: Finished difference. Result has 306 places, 305 transitions, 5641 flow [2023-11-06 22:42:24,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5641, PETRI_PLACES=306, PETRI_TRANSITIONS=305} [2023-11-06 22:42:24,185 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 282 predicate places. [2023-11-06 22:42:24,186 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 305 transitions, 5641 flow [2023-11-06 22:42:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:24,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:24,186 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:24,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-06 22:42:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:24,398 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:42:24,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 832302601, now seen corresponding path program 14 times [2023-11-06 22:42:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004239274] [2023-11-06 22:42:24,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:24,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:24,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:24,400 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:24,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:42:24,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:42:24,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:24,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:42:24,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:24,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:25,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:25,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004239274] [2023-11-06 22:42:25,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004239274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:25,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:25,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-11-06 22:42:25,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539221027] [2023-11-06 22:42:25,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:25,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:42:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:42:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:42:26,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:26,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 305 transitions, 5641 flow. Second operand has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:26,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:26,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:36,706 INFO L124 PetriNetUnfolderBase]: 1528/2831 cut-off events. [2023-11-06 22:42:36,706 INFO L125 PetriNetUnfolderBase]: For 463656/463656 co-relation queries the response was YES. [2023-11-06 22:42:36,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36347 conditions, 2831 events. 1528/2831 cut-off events. For 463656/463656 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 15706 event pairs, 180 based on Foata normal form. 32/2863 useless extension candidates. Maximal degree in co-relation 36228. Up to 860 conditions per place. [2023-11-06 22:42:36,751 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 262 selfloop transitions, 268 changer transitions 69/599 dead transitions. [2023-11-06 22:42:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 599 transitions, 15427 flow [2023-11-06 22:42:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-06 22:42:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-11-06 22:42:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4570 transitions. [2023-11-06 22:42:36,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4242086698227049 [2023-11-06 22:42:36,760 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4570 transitions. [2023-11-06 22:42:36,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4570 transitions. [2023-11-06 22:42:36,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:36,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4570 transitions. [2023-11-06 22:42:36,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 72.53968253968254) internal successors, (4570), 63 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 171.0) internal successors, (10944), 64 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,785 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 171.0) internal successors, (10944), 64 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:36,785 INFO L175 Difference]: Start difference. First operand has 306 places, 305 transitions, 5641 flow. Second operand 63 states and 4570 transitions. [2023-11-06 22:42:36,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 599 transitions, 15427 flow [2023-11-06 22:42:37,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 599 transitions, 14163 flow, removed 562 selfloop flow, removed 22 redundant places. [2023-11-06 22:42:37,906 INFO L231 Difference]: Finished difference. Result has 364 places, 420 transitions, 10614 flow [2023-11-06 22:42:37,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=10614, PETRI_PLACES=364, PETRI_TRANSITIONS=420} [2023-11-06 22:42:37,907 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 340 predicate places. [2023-11-06 22:42:37,907 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 420 transitions, 10614 flow [2023-11-06 22:42:37,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:37,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:37,908 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:37,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:38,110 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:42:38,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1307090353, now seen corresponding path program 15 times [2023-11-06 22:42:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:38,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145382159] [2023-11-06 22:42:38,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:42:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:38,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:38,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:42:38,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 22:42:38,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:38,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:42:38,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:38,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:39,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145382159] [2023-11-06 22:42:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145382159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:39,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-11-06 22:42:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639150038] [2023-11-06 22:42:39,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:39,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:42:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:42:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:42:40,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:40,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 420 transitions, 10614 flow. Second operand has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:40,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:40,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:40,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:54,030 INFO L124 PetriNetUnfolderBase]: 1656/3087 cut-off events. [2023-11-06 22:42:54,030 INFO L125 PetriNetUnfolderBase]: For 738208/738208 co-relation queries the response was YES. [2023-11-06 22:42:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45130 conditions, 3087 events. 1656/3087 cut-off events. For 738208/738208 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 17523 event pairs, 77 based on Foata normal form. 40/3127 useless extension candidates. Maximal degree in co-relation 44992. Up to 980 conditions per place. [2023-11-06 22:42:54,100 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 210 selfloop transitions, 362 changer transitions 81/653 dead transitions. [2023-11-06 22:42:54,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 653 transitions, 18598 flow [2023-11-06 22:42:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-06 22:42:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-11-06 22:42:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 5081 transitions. [2023-11-06 22:42:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42447786131996657 [2023-11-06 22:42:54,118 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 5081 transitions. [2023-11-06 22:42:54,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 5081 transitions. [2023-11-06 22:42:54,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:54,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 5081 transitions. [2023-11-06 22:42:54,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 72.58571428571429) internal successors, (5081), 70 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:54,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 171.0) internal successors, (12141), 71 states have internal predecessors, (12141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:54,155 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 171.0) internal successors, (12141), 71 states have internal predecessors, (12141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:54,156 INFO L175 Difference]: Start difference. First operand has 364 places, 420 transitions, 10614 flow. Second operand 70 states and 5081 transitions. [2023-11-06 22:42:54,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 653 transitions, 18598 flow [2023-11-06 22:42:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 653 transitions, 15740 flow, removed 1331 selfloop flow, removed 26 redundant places. [2023-11-06 22:42:55,798 INFO L231 Difference]: Finished difference. Result has 415 places, 462 transitions, 11506 flow [2023-11-06 22:42:55,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=11506, PETRI_PLACES=415, PETRI_TRANSITIONS=462} [2023-11-06 22:42:55,799 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 391 predicate places. [2023-11-06 22:42:55,799 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 462 transitions, 11506 flow [2023-11-06 22:42:55,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:55,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:55,800 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:55,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-06 22:42:56,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:56,000 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:42:56,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -400573417, now seen corresponding path program 16 times [2023-11-06 22:42:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:42:56,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146292984] [2023-11-06 22:42:56,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:42:56,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:42:56,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:42:56,002 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:42:56,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:42:56,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:42:56,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:56,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:42:56,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:56,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:57,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:42:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146292984] [2023-11-06 22:42:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146292984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:57,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:42:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-11-06 22:42:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873462612] [2023-11-06 22:42:57,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:57,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:42:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:42:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:42:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:42:58,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:42:58,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 462 transitions, 11506 flow. Second operand has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:58,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:58,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:42:58,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:16,214 INFO L124 PetriNetUnfolderBase]: 1732/3227 cut-off events. [2023-11-06 22:43:16,214 INFO L125 PetriNetUnfolderBase]: For 950629/950629 co-relation queries the response was YES. [2023-11-06 22:43:16,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49063 conditions, 3227 events. 1732/3227 cut-off events. For 950629/950629 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 18822 event pairs, 42 based on Foata normal form. 40/3267 useless extension candidates. Maximal degree in co-relation 48919. Up to 948 conditions per place. [2023-11-06 22:43:16,266 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 196 selfloop transitions, 410 changer transitions 89/695 dead transitions. [2023-11-06 22:43:16,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 695 transitions, 20306 flow [2023-11-06 22:43:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-06 22:43:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-11-06 22:43:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5449 transitions. [2023-11-06 22:43:16,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42487329434697857 [2023-11-06 22:43:16,287 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5449 transitions. [2023-11-06 22:43:16,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5449 transitions. [2023-11-06 22:43:16,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:16,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5449 transitions. [2023-11-06 22:43:16,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 72.65333333333334) internal successors, (5449), 75 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:16,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 171.0) internal successors, (12996), 76 states have internal predecessors, (12996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:16,312 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 171.0) internal successors, (12996), 76 states have internal predecessors, (12996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:16,312 INFO L175 Difference]: Start difference. First operand has 415 places, 462 transitions, 11506 flow. Second operand 75 states and 5449 transitions. [2023-11-06 22:43:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 695 transitions, 20306 flow [2023-11-06 22:43:17,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 695 transitions, 17023 flow, removed 1446 selfloop flow, removed 42 redundant places. [2023-11-06 22:43:17,910 INFO L231 Difference]: Finished difference. Result has 454 places, 493 transitions, 11981 flow [2023-11-06 22:43:17,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7190, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=11981, PETRI_PLACES=454, PETRI_TRANSITIONS=493} [2023-11-06 22:43:17,912 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 430 predicate places. [2023-11-06 22:43:17,912 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 493 transitions, 11981 flow [2023-11-06 22:43:17,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:17,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:17,913 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:17,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:18,114 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:43:18,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:18,114 INFO L85 PathProgramCache]: Analyzing trace with hash -399485317, now seen corresponding path program 17 times [2023-11-06 22:43:18,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:43:18,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309763061] [2023-11-06 22:43:18,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:43:18,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:18,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:43:18,116 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:43:18,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:43:18,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-06 22:43:18,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:18,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:43:18,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:43:18,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:43:19,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:43:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309763061] [2023-11-06 22:43:19,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309763061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:19,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:19,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2023-11-06 22:43:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75334762] [2023-11-06 22:43:19,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:43:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:43:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:43:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:43:20,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:43:20,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 493 transitions, 11981 flow. Second operand has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:20,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:20,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:43:20,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:31,967 INFO L124 PetriNetUnfolderBase]: 1672/3115 cut-off events. [2023-11-06 22:43:31,967 INFO L125 PetriNetUnfolderBase]: For 1083202/1083202 co-relation queries the response was YES. [2023-11-06 22:43:32,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46777 conditions, 3115 events. 1672/3115 cut-off events. For 1083202/1083202 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18403 event pairs, 33 based on Foata normal form. 32/3147 useless extension candidates. Maximal degree in co-relation 46630. Up to 832 conditions per place. [2023-11-06 22:43:32,021 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 135 selfloop transitions, 395 changer transitions 114/644 dead transitions. [2023-11-06 22:43:32,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 644 transitions, 16735 flow [2023-11-06 22:43:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-06 22:43:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-06 22:43:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4367 transitions. [2023-11-06 22:43:32,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256335282651072 [2023-11-06 22:43:32,028 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4367 transitions. [2023-11-06 22:43:32,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4367 transitions. [2023-11-06 22:43:32,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:32,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4367 transitions. [2023-11-06 22:43:32,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 72.78333333333333) internal successors, (4367), 60 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:32,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 171.0) internal successors, (10431), 61 states have internal predecessors, (10431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:32,048 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 171.0) internal successors, (10431), 61 states have internal predecessors, (10431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:32,048 INFO L175 Difference]: Start difference. First operand has 454 places, 493 transitions, 11981 flow. Second operand 60 states and 4367 transitions. [2023-11-06 22:43:32,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 644 transitions, 16735 flow [2023-11-06 22:43:34,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 644 transitions, 13584 flow, removed 1258 selfloop flow, removed 54 redundant places. [2023-11-06 22:43:34,189 INFO L231 Difference]: Finished difference. Result has 457 places, 475 transitions, 8979 flow [2023-11-06 22:43:34,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7634, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=8979, PETRI_PLACES=457, PETRI_TRANSITIONS=475} [2023-11-06 22:43:34,190 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 433 predicate places. [2023-11-06 22:43:34,190 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 8979 flow [2023-11-06 22:43:34,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.3529411764706) internal successors, (2358), 34 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:34,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:34,191 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:34,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:34,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:43:34,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -415028657, now seen corresponding path program 18 times [2023-11-06 22:43:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:43:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039951590] [2023-11-06 22:43:34,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:43:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:43:34,393 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:43:34,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:43:34,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-11-06 22:43:34,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:43:34,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:43:34,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:34,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:36,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:43:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039951590] [2023-11-06 22:43:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039951590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:36,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2023-11-06 22:43:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711168040] [2023-11-06 22:43:36,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:36,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-06 22:43:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:43:36,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-06 22:43:36,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:43:37,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:43:37,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 475 transitions, 8979 flow. Second operand has 40 states, 40 states have (on average 69.25) internal successors, (2770), 40 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:37,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:37,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:43:37,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:40,526 INFO L124 PetriNetUnfolderBase]: 1704/3179 cut-off events. [2023-11-06 22:43:40,527 INFO L125 PetriNetUnfolderBase]: For 844852/844852 co-relation queries the response was YES. [2023-11-06 22:43:40,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42744 conditions, 3179 events. 1704/3179 cut-off events. For 844852/844852 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18784 event pairs, 749 based on Foata normal form. 24/3203 useless extension candidates. Maximal degree in co-relation 42605. Up to 2905 conditions per place. [2023-11-06 22:43:40,572 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 479 selfloop transitions, 33 changer transitions 47/559 dead transitions. [2023-11-06 22:43:40,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 559 transitions, 12358 flow [2023-11-06 22:43:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:43:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:43:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1889 transitions. [2023-11-06 22:43:40,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42487629329734594 [2023-11-06 22:43:40,575 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1889 transitions. [2023-11-06 22:43:40,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1889 transitions. [2023-11-06 22:43:40,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:40,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1889 transitions. [2023-11-06 22:43:40,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 72.65384615384616) internal successors, (1889), 26 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:40,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 171.0) internal successors, (4617), 27 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:40,584 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 171.0) internal successors, (4617), 27 states have internal predecessors, (4617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:40,585 INFO L175 Difference]: Start difference. First operand has 457 places, 475 transitions, 8979 flow. Second operand 26 states and 1889 transitions. [2023-11-06 22:43:40,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 559 transitions, 12358 flow [2023-11-06 22:43:42,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 559 transitions, 11291 flow, removed 231 selfloop flow, removed 48 redundant places. [2023-11-06 22:43:42,161 INFO L231 Difference]: Finished difference. Result has 442 places, 483 transitions, 8643 flow [2023-11-06 22:43:42,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7990, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8643, PETRI_PLACES=442, PETRI_TRANSITIONS=483} [2023-11-06 22:43:42,162 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 418 predicate places. [2023-11-06 22:43:42,162 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 483 transitions, 8643 flow [2023-11-06 22:43:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 69.25) internal successors, (2770), 40 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:42,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:43:42,162 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:43:42,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:42,363 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:43:42,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1200184867, now seen corresponding path program 19 times [2023-11-06 22:43:42,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:43:42,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83392033] [2023-11-06 22:43:42,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:43:42,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:43:42,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:43:42,366 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:43:42,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 22:43:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:42,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:43:42,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:42,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:44,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:43:44,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83392033] [2023-11-06 22:43:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83392033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:44,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:43:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2023-11-06 22:43:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303251269] [2023-11-06 22:43:44,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-06 22:43:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:43:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-06 22:43:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:43:45,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:43:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 483 transitions, 8643 flow. Second operand has 40 states, 40 states have (on average 69.25) internal successors, (2770), 40 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:45,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:43:45,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:43:45,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:43:58,388 INFO L124 PetriNetUnfolderBase]: 2092/3947 cut-off events. [2023-11-06 22:43:58,388 INFO L125 PetriNetUnfolderBase]: For 1065882/1065882 co-relation queries the response was YES. [2023-11-06 22:43:58,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55001 conditions, 3947 events. 2092/3947 cut-off events. For 1065882/1065882 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 24055 event pairs, 708 based on Foata normal form. 24/3971 useless extension candidates. Maximal degree in co-relation 54853. Up to 2704 conditions per place. [2023-11-06 22:43:58,472 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 551 selfloop transitions, 154 changer transitions 75/780 dead transitions. [2023-11-06 22:43:58,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 780 transitions, 18770 flow [2023-11-06 22:43:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-06 22:43:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-06 22:43:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 4415 transitions. [2023-11-06 22:43:58,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423257597545777 [2023-11-06 22:43:58,477 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 4415 transitions. [2023-11-06 22:43:58,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 4415 transitions. [2023-11-06 22:43:58,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:43:58,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 4415 transitions. [2023-11-06 22:43:58,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 72.37704918032787) internal successors, (4415), 61 states have internal predecessors, (4415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:58,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 171.0) internal successors, (10602), 62 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:58,501 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 171.0) internal successors, (10602), 62 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:58,501 INFO L175 Difference]: Start difference. First operand has 442 places, 483 transitions, 8643 flow. Second operand 61 states and 4415 transitions. [2023-11-06 22:43:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 780 transitions, 18770 flow [2023-11-06 22:44:01,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 780 transitions, 18162 flow, removed 285 selfloop flow, removed 11 redundant places. [2023-11-06 22:44:01,199 INFO L231 Difference]: Finished difference. Result has 524 places, 576 transitions, 12510 flow [2023-11-06 22:44:01,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=8113, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=12510, PETRI_PLACES=524, PETRI_TRANSITIONS=576} [2023-11-06 22:44:01,201 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 500 predicate places. [2023-11-06 22:44:01,201 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 576 transitions, 12510 flow [2023-11-06 22:44:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 69.25) internal successors, (2770), 40 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:01,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:01,201 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:01,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:44:01,402 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:44:01,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1948728641, now seen corresponding path program 20 times [2023-11-06 22:44:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:44:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453454592] [2023-11-06 22:44:01,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:01,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:44:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:44:01,404 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:44:01,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1abb3dad-d0a1-4c29-9c4a-dc308d1ded81/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-06 22:44:01,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:01,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:01,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:44:01,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:01,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:03,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:44:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453454592] [2023-11-06 22:44:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453454592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:03,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:44:03,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2023-11-06 22:44:03,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956007856] [2023-11-06 22:44:03,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-06 22:44:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:44:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-06 22:44:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:44:04,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 171 [2023-11-06 22:44:04,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 576 transitions, 12510 flow. Second operand has 40 states, 40 states have (on average 69.25) internal successors, (2770), 40 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:04,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:04,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 171 [2023-11-06 22:44:04,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand