./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix001.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix001.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21c0308f80ae5e3a4b410ebaece3730b9f788bd0cc89fb6ef65f8dd9f7120f36 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:41,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:41,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:53:41,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:41,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:41,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:41,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:41,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:41,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:41,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:41,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:41,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:41,597 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:41,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:41,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:41,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:41,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:41,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:41,601 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:53:41,602 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:53:41,603 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:53:41,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:41,604 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:53:41,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:41,605 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:41,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:41,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:41,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:41,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:41,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:41,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:41,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:41,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:41,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:41,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:41,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:41,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:41,611 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:41,612 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_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21c0308f80ae5e3a4b410ebaece3730b9f788bd0cc89fb6ef65f8dd9f7120f36 [2023-11-19 07:53:41,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:41,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:42,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:42,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:42,003 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:42,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix001.opt.i [2023-11-19 07:53:45,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:53:45,784 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:53:45,785 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/sv-benchmarks/c/pthread-wmm/mix001.opt.i [2023-11-19 07:53:45,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/7b3a9cdae/728ff44f4720425293905cb021e72ff3/FLAGab42b4568 [2023-11-19 07:53:45,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/7b3a9cdae/728ff44f4720425293905cb021e72ff3 [2023-11-19 07:53:45,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:53:45,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:53:45,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:45,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:53:45,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:53:45,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:45" (1/1) ... [2023-11-19 07:53:45,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e49a009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:45, skipping insertion in model container [2023-11-19 07:53:45,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:53:45" (1/1) ... [2023-11-19 07:53:45,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:53:46,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:46,387 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:53:46,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:53:46,523 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:46,523 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:53:46,532 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:53:46,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46 WrapperNode [2023-11-19 07:53:46,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:53:46,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:46,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:53:46,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:53:46,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,629 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2023-11-19 07:53:46,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:53:46,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:53:46,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:53:46,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:53:46,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:53:46,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:53:46,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:53:46,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:53:46,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (1/1) ... [2023-11-19 07:53:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:53:46,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:53:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:53:46,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:53:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:53:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:53:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:53:46,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:53:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:53:46,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:53:46,807 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:53:46,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:53:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:53:46,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:53:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:53:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:53:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:53:46,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:53:46,811 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:53:47,027 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:53:47,031 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:53:47,529 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:53:47,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:53:47,786 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:53:47,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:47 BoogieIcfgContainer [2023-11-19 07:53:47,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:53:47,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:53:47,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:53:47,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:53:47,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:53:45" (1/3) ... [2023-11-19 07:53:47,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c079b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:47, skipping insertion in model container [2023-11-19 07:53:47,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:53:46" (2/3) ... [2023-11-19 07:53:47,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c079b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:53:47, skipping insertion in model container [2023-11-19 07:53:47,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:47" (3/3) ... [2023-11-19 07:53:47,802 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.opt.i [2023-11-19 07:53:47,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:53:47,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 07:53:47,823 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:53:47,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:53:47,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 134 transitions, 280 flow [2023-11-19 07:53:48,029 INFO L124 PetriNetUnfolderBase]: 4/131 cut-off events. [2023-11-19 07:53:48,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:48,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 131 events. 4/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:53:48,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 134 transitions, 280 flow [2023-11-19 07:53:48,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 131 transitions, 271 flow [2023-11-19 07:53:48,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:53:48,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 131 transitions, 271 flow [2023-11-19 07:53:48,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 131 transitions, 271 flow [2023-11-19 07:53:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 131 transitions, 271 flow [2023-11-19 07:53:48,113 INFO L124 PetriNetUnfolderBase]: 4/131 cut-off events. [2023-11-19 07:53:48,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 131 events. 4/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:53:48,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 3012 [2023-11-19 07:53:53,772 INFO L134 LiptonReduction]: Checked pairs total: 7205 [2023-11-19 07:53:53,773 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-11-19 07:53:53,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:53:53,822 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;@6073f979, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:53:53,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:53:53,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:53:53,826 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:53:53,826 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:53,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:53,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:53:53,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:53,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:53,834 INFO L85 PathProgramCache]: Analyzing trace with hash 613, now seen corresponding path program 1 times [2023-11-19 07:53:53,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374395555] [2023-11-19 07:53:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:53,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:53,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374395555] [2023-11-19 07:53:53,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374395555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:53,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:53,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:53:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176897799] [2023-11-19 07:53:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:54,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:53:54,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:53:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:53:54,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 268 [2023-11-19 07:53:54,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:54,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 268 [2023-11-19 07:53:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:54,531 INFO L124 PetriNetUnfolderBase]: 1101/1673 cut-off events. [2023-11-19 07:53:54,531 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:53:54,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 1673 events. 1101/1673 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8498 event pairs, 1101 based on Foata normal form. 0/1412 useless extension candidates. Maximal degree in co-relation 3335. Up to 1637 conditions per place. [2023-11-19 07:53:54,555 INFO L140 encePairwiseOnDemand]: 261/268 looper letters, 22 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 07:53:54,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 105 flow [2023-11-19 07:53:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:53:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:53:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 269 transitions. [2023-11-19 07:53:54,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018656716417911 [2023-11-19 07:53:54,583 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 269 transitions. [2023-11-19 07:53:54,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 269 transitions. [2023-11-19 07:53:54,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:54,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 269 transitions. [2023-11-19 07:53:54,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,599 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,603 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 75 flow. Second operand 2 states and 269 transitions. [2023-11-19 07:53:54,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 105 flow [2023-11-19 07:53:54,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:54,610 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 58 flow [2023-11-19 07:53:54,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-19 07:53:54,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-11-19 07:53:54,616 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 58 flow [2023-11-19 07:53:54,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:54,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:54,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:53:54,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:54,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -66244752, now seen corresponding path program 1 times [2023-11-19 07:53:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881347173] [2023-11-19 07:53:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:55,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881347173] [2023-11-19 07:53:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881347173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:55,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:55,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893421573] [2023-11-19 07:53:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:55,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 268 [2023-11-19 07:53:55,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:55,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 268 [2023-11-19 07:53:55,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:55,452 INFO L124 PetriNetUnfolderBase]: 910/1455 cut-off events. [2023-11-19 07:53:55,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:53:55,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 1455 events. 910/1455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7806 event pairs, 146 based on Foata normal form. 0/1329 useless extension candidates. Maximal degree in co-relation 2848. Up to 1101 conditions per place. [2023-11-19 07:53:55,466 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 28 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2023-11-19 07:53:55,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 142 flow [2023-11-19 07:53:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-19 07:53:55,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48507462686567165 [2023-11-19 07:53:55,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-19 07:53:55,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-19 07:53:55,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:55,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-19 07:53:55,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,480 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 58 flow. Second operand 3 states and 390 transitions. [2023-11-19 07:53:55,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 142 flow [2023-11-19 07:53:55,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:53:55,482 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 58 flow [2023-11-19 07:53:55,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-19 07:53:55,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-11-19 07:53:55,484 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 58 flow [2023-11-19 07:53:55,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:55,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:55,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:53:55,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:55,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash 763359202, now seen corresponding path program 1 times [2023-11-19 07:53:55,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:55,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852527116] [2023-11-19 07:53:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:55,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852527116] [2023-11-19 07:53:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852527116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:55,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:53:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25864913] [2023-11-19 07:53:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:53:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:53:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:53:55,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 268 [2023-11-19 07:53:55,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:55,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:55,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 268 [2023-11-19 07:53:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:56,750 INFO L124 PetriNetUnfolderBase]: 2645/3882 cut-off events. [2023-11-19 07:53:56,750 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-19 07:53:56,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 3882 events. 2645/3882 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18495 event pairs, 1043 based on Foata normal form. 0/3740 useless extension candidates. Maximal degree in co-relation 8015. Up to 3117 conditions per place. [2023-11-19 07:53:56,793 INFO L140 encePairwiseOnDemand]: 259/268 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-11-19 07:53:56,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 196 flow [2023-11-19 07:53:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:53:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:53:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-11-19 07:53:56,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46766169154228854 [2023-11-19 07:53:56,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-11-19 07:53:56,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-11-19 07:53:56,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:56,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-11-19 07:53:56,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:56,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:56,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:56,806 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 58 flow. Second operand 3 states and 376 transitions. [2023-11-19 07:53:56,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 196 flow [2023-11-19 07:53:56,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:56,811 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 116 flow [2023-11-19 07:53:56,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-19 07:53:56,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-11-19 07:53:56,814 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 116 flow [2023-11-19 07:53:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:56,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:56,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:53:56,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:56,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2105667826, now seen corresponding path program 1 times [2023-11-19 07:53:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491582911] [2023-11-19 07:53:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:57,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491582911] [2023-11-19 07:53:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491582911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:57,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:57,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:53:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303866925] [2023-11-19 07:53:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:53:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:53:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:53:57,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 268 [2023-11-19 07:53:57,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 106.66666666666667) internal successors, (640), 6 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:57,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:57,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 268 [2023-11-19 07:53:57,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:58,719 INFO L124 PetriNetUnfolderBase]: 1913/3028 cut-off events. [2023-11-19 07:53:58,719 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2023-11-19 07:53:58,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7373 conditions, 3028 events. 1913/3028 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16165 event pairs, 554 based on Foata normal form. 220/3173 useless extension candidates. Maximal degree in co-relation 7368. Up to 1849 conditions per place. [2023-11-19 07:53:58,755 INFO L140 encePairwiseOnDemand]: 261/268 looper letters, 35 selfloop transitions, 7 changer transitions 14/62 dead transitions. [2023-11-19 07:53:58,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 322 flow [2023-11-19 07:53:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:53:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:53:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2023-11-19 07:53:58,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228855721393035 [2023-11-19 07:53:58,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2023-11-19 07:53:58,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2023-11-19 07:53:58,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:58,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2023-11-19 07:53:58,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:58,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:58,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:58,772 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 116 flow. Second operand 6 states and 680 transitions. [2023-11-19 07:53:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 322 flow [2023-11-19 07:53:58,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 62 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:53:58,790 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 135 flow [2023-11-19 07:53:58,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-19 07:53:58,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-19 07:53:58,792 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 135 flow [2023-11-19 07:53:58,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.66666666666667) internal successors, (640), 6 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:58,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:58,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:58,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:53:58,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:58,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash -532101955, now seen corresponding path program 1 times [2023-11-19 07:53:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914785317] [2023-11-19 07:53:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:53:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:53:59,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:53:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914785317] [2023-11-19 07:53:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914785317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:53:59,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:53:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:53:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844265011] [2023-11-19 07:53:59,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:53:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:53:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:53:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:53:59,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:53:59,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 268 [2023-11-19 07:53:59,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:59,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:53:59,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 268 [2023-11-19 07:53:59,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:53:59,650 INFO L124 PetriNetUnfolderBase]: 1869/2786 cut-off events. [2023-11-19 07:53:59,650 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2023-11-19 07:53:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 2786 events. 1869/2786 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12440 event pairs, 919 based on Foata normal form. 0/2732 useless extension candidates. Maximal degree in co-relation 7316. Up to 1623 conditions per place. [2023-11-19 07:53:59,686 INFO L140 encePairwiseOnDemand]: 260/268 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-11-19 07:53:59,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 347 flow [2023-11-19 07:53:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:53:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:53:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-11-19 07:53:59,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458955223880597 [2023-11-19 07:53:59,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-11-19 07:53:59,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-11-19 07:53:59,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:53:59,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-11-19 07:53:59,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:59,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:59,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:59,699 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 135 flow. Second operand 4 states and 492 transitions. [2023-11-19 07:53:59,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 347 flow [2023-11-19 07:53:59,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 332 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:53:59,717 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 186 flow [2023-11-19 07:53:59,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-19 07:53:59,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-19 07:53:59,721 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 186 flow [2023-11-19 07:53:59,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:53:59,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:53:59,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:53:59,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:53:59,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:53:59,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:53:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash 577202197, now seen corresponding path program 1 times [2023-11-19 07:53:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:53:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697833582] [2023-11-19 07:53:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:53:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:53:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:00,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:00,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697833582] [2023-11-19 07:54:00,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697833582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:00,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460347992] [2023-11-19 07:54:00,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:00,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:00,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 268 [2023-11-19 07:54:00,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:00,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:00,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 268 [2023-11-19 07:54:00,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:00,984 INFO L124 PetriNetUnfolderBase]: 1059/1727 cut-off events. [2023-11-19 07:54:00,984 INFO L125 PetriNetUnfolderBase]: For 1402/1500 co-relation queries the response was YES. [2023-11-19 07:54:00,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 1727 events. 1059/1727 cut-off events. For 1402/1500 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8732 event pairs, 495 based on Foata normal form. 141/1800 useless extension candidates. Maximal degree in co-relation 4615. Up to 1061 conditions per place. [2023-11-19 07:54:01,006 INFO L140 encePairwiseOnDemand]: 263/268 looper letters, 23 selfloop transitions, 4 changer transitions 17/52 dead transitions. [2023-11-19 07:54:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 308 flow [2023-11-19 07:54:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 671 transitions. [2023-11-19 07:54:01,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172885572139303 [2023-11-19 07:54:01,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 671 transitions. [2023-11-19 07:54:01,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 671 transitions. [2023-11-19 07:54:01,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:01,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 671 transitions. [2023-11-19 07:54:01,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,023 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,023 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 186 flow. Second operand 6 states and 671 transitions. [2023-11-19 07:54:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 308 flow [2023-11-19 07:54:01,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:01,031 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 127 flow [2023-11-19 07:54:01,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-11-19 07:54:01,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-19 07:54:01,035 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 127 flow [2023-11-19 07:54:01,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:01,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:01,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:01,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:01,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1166584653, now seen corresponding path program 1 times [2023-11-19 07:54:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431939074] [2023-11-19 07:54:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431939074] [2023-11-19 07:54:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431939074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092132581] [2023-11-19 07:54:01,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:01,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 268 [2023-11-19 07:54:01,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:01,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 268 [2023-11-19 07:54:01,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:01,542 INFO L124 PetriNetUnfolderBase]: 758/1249 cut-off events. [2023-11-19 07:54:01,542 INFO L125 PetriNetUnfolderBase]: For 545/603 co-relation queries the response was YES. [2023-11-19 07:54:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 1249 events. 758/1249 cut-off events. For 545/603 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5836 event pairs, 288 based on Foata normal form. 19/1226 useless extension candidates. Maximal degree in co-relation 3021. Up to 693 conditions per place. [2023-11-19 07:54:01,560 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 24 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-19 07:54:01,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 197 flow [2023-11-19 07:54:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-19 07:54:01,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763681592039801 [2023-11-19 07:54:01,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-19 07:54:01,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-19 07:54:01,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:01,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-19 07:54:01,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,570 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 127 flow. Second operand 3 states and 383 transitions. [2023-11-19 07:54:01,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 197 flow [2023-11-19 07:54:01,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 183 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-19 07:54:01,574 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 124 flow [2023-11-19 07:54:01,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-11-19 07:54:01,575 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-19 07:54:01,575 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 124 flow [2023-11-19 07:54:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:01,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:01,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:01,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1722026651, now seen corresponding path program 1 times [2023-11-19 07:54:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745254594] [2023-11-19 07:54:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:01,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745254594] [2023-11-19 07:54:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745254594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:01,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:01,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831040103] [2023-11-19 07:54:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:01,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:01,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 268 [2023-11-19 07:54:01,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:01,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:01,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 268 [2023-11-19 07:54:01,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:02,180 INFO L124 PetriNetUnfolderBase]: 589/1044 cut-off events. [2023-11-19 07:54:02,180 INFO L125 PetriNetUnfolderBase]: For 502/533 co-relation queries the response was YES. [2023-11-19 07:54:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1044 events. 589/1044 cut-off events. For 502/533 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5380 event pairs, 130 based on Foata normal form. 120/1127 useless extension candidates. Maximal degree in co-relation 2638. Up to 540 conditions per place. [2023-11-19 07:54:02,192 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 46 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-11-19 07:54:02,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 340 flow [2023-11-19 07:54:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2023-11-19 07:54:02,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46417910447761196 [2023-11-19 07:54:02,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2023-11-19 07:54:02,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2023-11-19 07:54:02,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:02,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2023-11-19 07:54:02,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,206 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 124 flow. Second operand 5 states and 622 transitions. [2023-11-19 07:54:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 340 flow [2023-11-19 07:54:02,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:02,211 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 178 flow [2023-11-19 07:54:02,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-19 07:54:02,212 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-19 07:54:02,212 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 178 flow [2023-11-19 07:54:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:02,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:02,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:02,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:02,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -102070870, now seen corresponding path program 1 times [2023-11-19 07:54:02,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:02,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188874552] [2023-11-19 07:54:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:02,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:02,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188874552] [2023-11-19 07:54:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188874552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:02,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:02,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:02,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125737970] [2023-11-19 07:54:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:02,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:02,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:02,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 268 [2023-11-19 07:54:02,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:02,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 268 [2023-11-19 07:54:02,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:02,873 INFO L124 PetriNetUnfolderBase]: 880/1542 cut-off events. [2023-11-19 07:54:02,873 INFO L125 PetriNetUnfolderBase]: For 1461/1491 co-relation queries the response was YES. [2023-11-19 07:54:02,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5014 conditions, 1542 events. 880/1542 cut-off events. For 1461/1491 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8539 event pairs, 223 based on Foata normal form. 18/1530 useless extension candidates. Maximal degree in co-relation 5002. Up to 785 conditions per place. [2023-11-19 07:54:02,890 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 43 selfloop transitions, 2 changer transitions 19/71 dead transitions. [2023-11-19 07:54:02,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 483 flow [2023-11-19 07:54:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2023-11-19 07:54:02,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47201492537313433 [2023-11-19 07:54:02,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2023-11-19 07:54:02,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2023-11-19 07:54:02,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:02,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2023-11-19 07:54:02,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,903 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 178 flow. Second operand 4 states and 506 transitions. [2023-11-19 07:54:02,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 483 flow [2023-11-19 07:54:02,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:02,910 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 171 flow [2023-11-19 07:54:02,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-11-19 07:54:02,911 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-19 07:54:02,912 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 171 flow [2023-11-19 07:54:02,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:02,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:54:02,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1569864410, now seen corresponding path program 1 times [2023-11-19 07:54:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376796543] [2023-11-19 07:54:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376796543] [2023-11-19 07:54:03,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376796543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:03,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:03,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:03,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328633672] [2023-11-19 07:54:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:03,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:03,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 268 [2023-11-19 07:54:03,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:03,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 268 [2023-11-19 07:54:03,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:03,559 INFO L124 PetriNetUnfolderBase]: 1018/1832 cut-off events. [2023-11-19 07:54:03,560 INFO L125 PetriNetUnfolderBase]: For 2405/2472 co-relation queries the response was YES. [2023-11-19 07:54:03,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6089 conditions, 1832 events. 1018/1832 cut-off events. For 2405/2472 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10492 event pairs, 289 based on Foata normal form. 21/1817 useless extension candidates. Maximal degree in co-relation 6075. Up to 947 conditions per place. [2023-11-19 07:54:03,575 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 47 selfloop transitions, 2 changer transitions 7/64 dead transitions. [2023-11-19 07:54:03,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 427 flow [2023-11-19 07:54:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2023-11-19 07:54:03,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47201492537313433 [2023-11-19 07:54:03,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2023-11-19 07:54:03,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2023-11-19 07:54:03,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:03,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2023-11-19 07:54:03,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,584 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,585 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 171 flow. Second operand 4 states and 506 transitions. [2023-11-19 07:54:03,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 427 flow [2023-11-19 07:54:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 418 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:03,593 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 183 flow [2023-11-19 07:54:03,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2023-11-19 07:54:03,594 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-11-19 07:54:03,595 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 183 flow [2023-11-19 07:54:03,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:03,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:54:03,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:03,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1361373762, now seen corresponding path program 1 times [2023-11-19 07:54:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:03,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433889515] [2023-11-19 07:54:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433889515] [2023-11-19 07:54:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433889515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569576325] [2023-11-19 07:54:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:03,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 268 [2023-11-19 07:54:03,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:03,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:03,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 268 [2023-11-19 07:54:03,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:04,166 INFO L124 PetriNetUnfolderBase]: 682/1298 cut-off events. [2023-11-19 07:54:04,166 INFO L125 PetriNetUnfolderBase]: For 1241/1316 co-relation queries the response was YES. [2023-11-19 07:54:04,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 1298 events. 682/1298 cut-off events. For 1241/1316 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7810 event pairs, 108 based on Foata normal form. 152/1394 useless extension candidates. Maximal degree in co-relation 4207. Up to 525 conditions per place. [2023-11-19 07:54:04,176 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 49 selfloop transitions, 11 changer transitions 12/82 dead transitions. [2023-11-19 07:54:04,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 82 transitions, 533 flow [2023-11-19 07:54:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-11-19 07:54:04,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4626865671641791 [2023-11-19 07:54:04,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-11-19 07:54:04,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-11-19 07:54:04,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:04,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-11-19 07:54:04,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,189 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,189 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 183 flow. Second operand 7 states and 868 transitions. [2023-11-19 07:54:04,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 82 transitions, 533 flow [2023-11-19 07:54:04,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 82 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:04,195 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 264 flow [2023-11-19 07:54:04,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-11-19 07:54:04,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-11-19 07:54:04,196 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 264 flow [2023-11-19 07:54:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.8) internal successors, (584), 5 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:04,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:04,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:54:04,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -318937623, now seen corresponding path program 1 times [2023-11-19 07:54:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921356649] [2023-11-19 07:54:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921356649] [2023-11-19 07:54:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921356649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:04,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730481654] [2023-11-19 07:54:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:04,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 268 [2023-11-19 07:54:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 268 [2023-11-19 07:54:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:04,824 INFO L124 PetriNetUnfolderBase]: 610/1180 cut-off events. [2023-11-19 07:54:04,824 INFO L125 PetriNetUnfolderBase]: For 1962/2016 co-relation queries the response was YES. [2023-11-19 07:54:04,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 1180 events. 610/1180 cut-off events. For 1962/2016 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7255 event pairs, 99 based on Foata normal form. 49/1173 useless extension candidates. Maximal degree in co-relation 4490. Up to 475 conditions per place. [2023-11-19 07:54:04,832 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 21 selfloop transitions, 10 changer transitions 47/82 dead transitions. [2023-11-19 07:54:04,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 583 flow [2023-11-19 07:54:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:54:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:54:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1096 transitions. [2023-11-19 07:54:04,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45439469320066334 [2023-11-19 07:54:04,838 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1096 transitions. [2023-11-19 07:54:04,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1096 transitions. [2023-11-19 07:54:04,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:04,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1096 transitions. [2023-11-19 07:54:04,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.77777777777777) internal successors, (1096), 9 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 268.0) internal successors, (2680), 10 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 268.0) internal successors, (2680), 10 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,848 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 264 flow. Second operand 9 states and 1096 transitions. [2023-11-19 07:54:04,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 583 flow [2023-11-19 07:54:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 532 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:04,872 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 181 flow [2023-11-19 07:54:04,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=181, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2023-11-19 07:54:04,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-11-19 07:54:04,873 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 181 flow [2023-11-19 07:54:04,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:04,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:04,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:04,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:54:04,874 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:04,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:04,875 INFO L85 PathProgramCache]: Analyzing trace with hash 313963615, now seen corresponding path program 1 times [2023-11-19 07:54:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:04,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015920819] [2023-11-19 07:54:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:04,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:04,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:54:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:04,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:54:04,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:54:04,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-19 07:54:04,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-11-19 07:54:04,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-19 07:54:04,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-19 07:54:04,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-19 07:54:04,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-19 07:54:04,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-19 07:54:04,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-19 07:54:04,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-19 07:54:04,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-19 07:54:04,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-19 07:54:04,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-19 07:54:04,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-19 07:54:04,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:54:04,997 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:05,003 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:54:05,003 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:54:05,075 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-19 07:54:05,077 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated [2023-11-19 07:54:05,078 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-19 07:54:05,092 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-19 07:54:05,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:54:05 BasicIcfg [2023-11-19 07:54:05,117 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:54:05,118 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:54:05,118 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:54:05,118 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:54:05,119 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:53:47" (3/4) ... [2023-11-19 07:54:05,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:54:05,122 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:54:05,122 INFO L158 Benchmark]: Toolchain (without parser) took 19282.26ms. Allocated memory was 224.4MB in the beginning and 394.3MB in the end (delta: 169.9MB). Free memory was 177.2MB in the beginning and 255.2MB in the end (delta: -78.1MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,122 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 74.1MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:05,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.15ms. Allocated memory is still 224.4MB. Free memory was 176.8MB in the beginning and 152.6MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.75ms. Allocated memory is still 224.4MB. Free memory was 152.6MB in the beginning and 150.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,124 INFO L158 Benchmark]: Boogie Preprocessor took 83.09ms. Allocated memory is still 224.4MB. Free memory was 150.0MB in the beginning and 147.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,124 INFO L158 Benchmark]: RCFGBuilder took 1078.85ms. Allocated memory is still 224.4MB. Free memory was 147.9MB in the beginning and 167.1MB in the end (delta: -19.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,124 INFO L158 Benchmark]: TraceAbstraction took 17321.90ms. Allocated memory was 224.4MB in the beginning and 394.3MB in the end (delta: 169.9MB). Free memory was 166.0MB in the beginning and 255.2MB in the end (delta: -89.2MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2023-11-19 07:54:05,125 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 394.3MB. Free memory is still 255.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:05,126 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory was 74.3MB in the beginning and 74.1MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.15ms. Allocated memory is still 224.4MB. Free memory was 176.8MB in the beginning and 152.6MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.75ms. Allocated memory is still 224.4MB. Free memory was 152.6MB in the beginning and 150.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.09ms. Allocated memory is still 224.4MB. Free memory was 150.0MB in the beginning and 147.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1078.85ms. Allocated memory is still 224.4MB. Free memory was 147.9MB in the beginning and 167.1MB in the end (delta: -19.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17321.90ms. Allocated memory was 224.4MB in the beginning and 394.3MB in the end (delta: 169.9MB). Free memory was 166.0MB in the beginning and 255.2MB in the end (delta: -89.2MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 394.3MB. Free memory is still 255.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 137 PlacesBefore, 42 PlacesAfterwards, 131 TransitionsBefore, 33 TransitionsAfterwards, 3012 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 134 TotalNumberOfCompositions, 7205 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4181, independent: 3979, independent conditional: 0, independent unconditional: 3979, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1659, independent: 1608, independent conditional: 0, independent unconditional: 1608, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4181, independent: 2371, independent conditional: 0, independent unconditional: 2371, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 1659, unknown conditional: 0, unknown unconditional: 1659] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 139, Positive conditional cache size: 0, Positive unconditional cache size: 139, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 17. Possible FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p1_EBX = 0; [L719] 0 int __unbuffered_p2_EAX = 0; [L721] 0 int __unbuffered_p2_EBX = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L727] 0 int y = 0; [L728] 0 _Bool y$flush_delayed; [L729] 0 int y$mem_tmp; [L730] 0 _Bool y$r_buff0_thd0; [L731] 0 _Bool y$r_buff0_thd1; [L732] 0 _Bool y$r_buff0_thd2; [L733] 0 _Bool y$r_buff0_thd3; [L734] 0 _Bool y$r_buff1_thd0; [L735] 0 _Bool y$r_buff1_thd1; [L736] 0 _Bool y$r_buff1_thd2; [L737] 0 _Bool y$r_buff1_thd3; [L738] 0 _Bool y$read_delayed; [L739] 0 int *y$read_delayed_var; [L740] 0 int y$w_buff0; [L741] 0 _Bool y$w_buff0_used; [L742] 0 int y$w_buff1; [L743] 0 _Bool y$w_buff1_used; [L745] 0 int z = 0; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L853] 0 pthread_t t17; [L854] FCALL, FORK 0 pthread_create(&t17, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t17={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L855] 0 pthread_t t18; [L856] FCALL, FORK 0 pthread_create(&t18, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t17={5:0}, t18={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L857] 0 pthread_t t19; [L858] FCALL, FORK 0 pthread_create(&t19, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t17={5:0}, t18={6:0}, t19={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L800] 3 y$w_buff1 = y$w_buff0 [L801] 3 y$w_buff0 = 1 [L802] 3 y$w_buff1_used = y$w_buff0_used [L803] 3 y$w_buff0_used = (_Bool)1 [L804] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L804] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L805] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L806] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L807] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L808] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L809] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L812] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L813] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L814] 3 y$flush_delayed = weak$$choice2 [L815] 3 y$mem_tmp = y [L816] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L817] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L818] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L819] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L820] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L821] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L822] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L823] 3 __unbuffered_p2_EAX = y [L824] 3 y = y$flush_delayed ? y$mem_tmp : y [L825] 3 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] 3 __unbuffered_p2_EBX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L751] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L754] 1 __unbuffered_p0_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L757] 1 __unbuffered_p0_EBX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L769] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L772] 2 __unbuffered_p1_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L775] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L776] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L777] 2 y$flush_delayed = weak$$choice2 [L778] 2 y$mem_tmp = y [L779] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L780] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L781] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L782] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L783] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L784] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L785] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L786] 2 __unbuffered_p1_EBX = y [L787] 2 y = y$flush_delayed ? y$mem_tmp : y [L788] 2 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L831] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L832] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L833] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L834] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L835] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L762] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L764] 1 return 0; [L793] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L795] 2 return 0; [L838] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L840] 3 return 0; [L860] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L862] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L862] RET 0 assume_abort_if_not(main$tmp_guard0) [L864] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L865] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L866] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L867] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L868] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t17={5:0}, t18={6:0}, t19={3:0}, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L871] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L873] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) [L17] 0 __assert_fail ("0", "mix001.opt.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 856]: 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: 858]: 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: 854]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 162 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 557 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 413 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1493 IncrementalHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 21 mSDtfsCounter, 1493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=11, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:54:05,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix001.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21c0308f80ae5e3a4b410ebaece3730b9f788bd0cc89fb6ef65f8dd9f7120f36 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:07,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:08,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:54:08,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:08,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:08,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:08,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:08,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:08,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:08,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:08,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:08,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:08,099 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:08,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:08,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:08,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:08,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:08,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:08,103 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:08,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:08,105 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:08,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:08,106 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:08,106 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:54:08,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:54:08,107 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:08,108 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:08,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:08,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:08,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:08,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:08,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:08,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:08,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:08,113 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:54:08,113 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:54:08,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:08,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:08,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:08,115 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:54:08,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:08,115 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_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21c0308f80ae5e3a4b410ebaece3730b9f788bd0cc89fb6ef65f8dd9f7120f36 [2023-11-19 07:54:08,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:08,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:08,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:08,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:08,586 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:08,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix001.opt.i [2023-11-19 07:54:11,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:12,174 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:12,175 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/sv-benchmarks/c/pthread-wmm/mix001.opt.i [2023-11-19 07:54:12,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/cb6926755/e847d2e9b1c64cfc92f47d27781e86d3/FLAG596e85676 [2023-11-19 07:54:12,214 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/data/cb6926755/e847d2e9b1c64cfc92f47d27781e86d3 [2023-11-19 07:54:12,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:12,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:12,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:12,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:12,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:12,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:12" (1/1) ... [2023-11-19 07:54:12,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76197cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:12, skipping insertion in model container [2023-11-19 07:54:12,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:12" (1/1) ... [2023-11-19 07:54:12,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:12,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:12,860 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:12,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:13,027 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:13,027 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:13,035 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:13,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13 WrapperNode [2023-11-19 07:54:13,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:13,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:13,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:13,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:13,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,109 INFO L138 Inliner]: procedures = 179, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2023-11-19 07:54:13,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:13,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:13,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:13,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:13,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:13,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:13,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:13,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:13,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (1/1) ... [2023-11-19 07:54:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:13,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:13,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:54:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:54:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:54:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:54:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:54:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:54:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:54:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:54:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:54:13,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:54:13,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:13,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:13,261 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:54:13,478 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:13,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:13,998 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:14,169 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:14,169 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:54:14,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:14 BoogieIcfgContainer [2023-11-19 07:54:14,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:14,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:14,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:14,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:14,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:12" (1/3) ... [2023-11-19 07:54:14,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cadbbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:14, skipping insertion in model container [2023-11-19 07:54:14,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:13" (2/3) ... [2023-11-19 07:54:14,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cadbbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:14, skipping insertion in model container [2023-11-19 07:54:14,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:14" (3/3) ... [2023-11-19 07:54:14,189 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.opt.i [2023-11-19 07:54:14,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:14,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 07:54:14,230 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:14,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:14,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 135 transitions, 282 flow [2023-11-19 07:54:14,524 INFO L124 PetriNetUnfolderBase]: 4/132 cut-off events. [2023-11-19 07:54:14,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:14,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 132 events. 4/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:54:14,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 135 transitions, 282 flow [2023-11-19 07:54:14,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 132 transitions, 273 flow [2023-11-19 07:54:14,548 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:14,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 132 transitions, 273 flow [2023-11-19 07:54:14,568 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 132 transitions, 273 flow [2023-11-19 07:54:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 132 transitions, 273 flow [2023-11-19 07:54:14,646 INFO L124 PetriNetUnfolderBase]: 4/132 cut-off events. [2023-11-19 07:54:14,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:14,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 132 events. 4/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-19 07:54:14,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 3012 [2023-11-19 07:54:23,417 INFO L134 LiptonReduction]: Checked pairs total: 6987 [2023-11-19 07:54:23,417 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-11-19 07:54:23,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:23,439 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;@255157d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:23,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:54:23,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:23,442 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:54:23,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:23,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:23,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:54:23,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:23,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 621, now seen corresponding path program 1 times [2023-11-19 07:54:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319485489] [2023-11-19 07:54:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,463 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 [2023-11-19 07:54:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:23,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:23,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:23,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:54:23,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:23,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:23,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:23,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319485489] [2023-11-19 07:54:23,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319485489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:23,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:23,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:54:23,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696128497] [2023-11-19 07:54:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:23,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:23,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 274 [2023-11-19 07:54:23,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:23,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:23,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 274 [2023-11-19 07:54:23,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:24,058 INFO L124 PetriNetUnfolderBase]: 1101/1673 cut-off events. [2023-11-19 07:54:24,059 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-19 07:54:24,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 1673 events. 1101/1673 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8441 event pairs, 1101 based on Foata normal form. 0/1412 useless extension candidates. Maximal degree in co-relation 3335. Up to 1637 conditions per place. [2023-11-19 07:54:24,078 INFO L140 encePairwiseOnDemand]: 267/274 looper letters, 22 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-19 07:54:24,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 105 flow [2023-11-19 07:54:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 271 transitions. [2023-11-19 07:54:24,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49452554744525545 [2023-11-19 07:54:24,101 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 271 transitions. [2023-11-19 07:54:24,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 271 transitions. [2023-11-19 07:54:24,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:24,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 271 transitions. [2023-11-19 07:54:24,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,115 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,116 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 75 flow. Second operand 2 states and 271 transitions. [2023-11-19 07:54:24,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 105 flow [2023-11-19 07:54:24,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:54:24,121 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 58 flow [2023-11-19 07:54:24,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-19 07:54:24,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-11-19 07:54:24,128 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 58 flow [2023-11-19 07:54:24,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:24,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:24,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:24,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:24,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:24,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 198331174, now seen corresponding path program 1 times [2023-11-19 07:54:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:24,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448033307] [2023-11-19 07:54:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:24,334 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 [2023-11-19 07:54:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:24,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:24,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:24,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:24,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:24,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:24,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448033307] [2023-11-19 07:54:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448033307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:24,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185558354] [2023-11-19 07:54:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:24,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 274 [2023-11-19 07:54:24,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:24,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 274 [2023-11-19 07:54:24,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:24,872 INFO L124 PetriNetUnfolderBase]: 910/1455 cut-off events. [2023-11-19 07:54:24,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:24,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 1455 events. 910/1455 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7811 event pairs, 146 based on Foata normal form. 0/1329 useless extension candidates. Maximal degree in co-relation 2848. Up to 1101 conditions per place. [2023-11-19 07:54:24,888 INFO L140 encePairwiseOnDemand]: 271/274 looper letters, 28 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2023-11-19 07:54:24,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 142 flow [2023-11-19 07:54:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-19 07:54:24,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781021897810219 [2023-11-19 07:54:24,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-19 07:54:24,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-19 07:54:24,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:24,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-19 07:54:24,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,911 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 58 flow. Second operand 3 states and 393 transitions. [2023-11-19 07:54:24,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 142 flow [2023-11-19 07:54:24,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:24,913 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 58 flow [2023-11-19 07:54:24,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-19 07:54:24,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-11-19 07:54:24,915 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 58 flow [2023-11-19 07:54:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:24,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:24,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:24,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:25,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:25,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:25,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1617780661, now seen corresponding path program 1 times [2023-11-19 07:54:25,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182685746] [2023-11-19 07:54:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,127 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 [2023-11-19 07:54:25,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:25,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:25,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:25,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:25,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:25,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:25,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:25,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182685746] [2023-11-19 07:54:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182685746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:25,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:25,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:25,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820437957] [2023-11-19 07:54:25,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:25,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:25,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:25,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 274 [2023-11-19 07:54:25,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:25,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 274 [2023-11-19 07:54:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:25,650 INFO L124 PetriNetUnfolderBase]: 514/859 cut-off events. [2023-11-19 07:54:25,650 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:54:25,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 859 events. 514/859 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4145 event pairs, 96 based on Foata normal form. 60/878 useless extension candidates. Maximal degree in co-relation 1791. Up to 609 conditions per place. [2023-11-19 07:54:25,657 INFO L140 encePairwiseOnDemand]: 268/274 looper letters, 29 selfloop transitions, 4 changer transitions 19/56 dead transitions. [2023-11-19 07:54:25,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 236 flow [2023-11-19 07:54:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-11-19 07:54:25,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591240875912409 [2023-11-19 07:54:25,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-11-19 07:54:25,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-11-19 07:54:25,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:25,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-11-19 07:54:25,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,671 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 58 flow. Second operand 5 states and 629 transitions. [2023-11-19 07:54:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 236 flow [2023-11-19 07:54:25,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:25,677 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 90 flow [2023-11-19 07:54:25,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-19 07:54:25,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-19 07:54:25,679 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 90 flow [2023-11-19 07:54:25,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:25,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:25,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:25,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:25,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:25,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1923007880, now seen corresponding path program 1 times [2023-11-19 07:54:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246373513] [2023-11-19 07:54:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:25,885 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 [2023-11-19 07:54:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:25,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:25,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:25,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:25,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:26,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:26,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246373513] [2023-11-19 07:54:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246373513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:26,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53857798] [2023-11-19 07:54:26,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:26,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 274 [2023-11-19 07:54:26,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:26,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 274 [2023-11-19 07:54:26,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:26,401 INFO L124 PetriNetUnfolderBase]: 208/399 cut-off events. [2023-11-19 07:54:26,402 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-19 07:54:26,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 399 events. 208/399 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1677 event pairs, 44 based on Foata normal form. 36/420 useless extension candidates. Maximal degree in co-relation 1071. Up to 136 conditions per place. [2023-11-19 07:54:26,405 INFO L140 encePairwiseOnDemand]: 268/274 looper letters, 37 selfloop transitions, 7 changer transitions 19/67 dead transitions. [2023-11-19 07:54:26,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 340 flow [2023-11-19 07:54:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2023-11-19 07:54:26,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45924574209245744 [2023-11-19 07:54:26,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2023-11-19 07:54:26,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2023-11-19 07:54:26,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:26,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2023-11-19 07:54:26,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,425 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,425 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 90 flow. Second operand 6 states and 755 transitions. [2023-11-19 07:54:26,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 340 flow [2023-11-19 07:54:26,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 67 transitions, 334 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:26,432 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 140 flow [2023-11-19 07:54:26,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:54:26,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-19 07:54:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 140 flow [2023-11-19 07:54:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:26,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:26,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:26,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:26,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:26,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1905921270, now seen corresponding path program 1 times [2023-11-19 07:54:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:26,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783617502] [2023-11-19 07:54:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:26,639 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 [2023-11-19 07:54:26,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:26,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:26,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:26,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:26,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:26,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:26,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:26,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783617502] [2023-11-19 07:54:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783617502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:26,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:26,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137395852] [2023-11-19 07:54:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:26,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:26,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:26,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:26,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:26,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 274 [2023-11-19 07:54:26,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:26,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:26,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 274 [2023-11-19 07:54:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:27,239 INFO L124 PetriNetUnfolderBase]: 120/240 cut-off events. [2023-11-19 07:54:27,239 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-11-19 07:54:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 240 events. 120/240 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 878 event pairs, 39 based on Foata normal form. 10/244 useless extension candidates. Maximal degree in co-relation 711. Up to 90 conditions per place. [2023-11-19 07:54:27,243 INFO L140 encePairwiseOnDemand]: 268/274 looper letters, 34 selfloop transitions, 10 changer transitions 10/58 dead transitions. [2023-11-19 07:54:27,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 338 flow [2023-11-19 07:54:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 861 transitions. [2023-11-19 07:54:27,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489051094890511 [2023-11-19 07:54:27,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 861 transitions. [2023-11-19 07:54:27,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 861 transitions. [2023-11-19 07:54:27,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:27,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 861 transitions. [2023-11-19 07:54:27,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,261 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 140 flow. Second operand 7 states and 861 transitions. [2023-11-19 07:54:27,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 338 flow [2023-11-19 07:54:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 302 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:27,267 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 142 flow [2023-11-19 07:54:27,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-11-19 07:54:27,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-19 07:54:27,269 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 142 flow [2023-11-19 07:54:27,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:27,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:27,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Ended with exit code 0 [2023-11-19 07:54:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:27,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:27,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1508971509, now seen corresponding path program 1 times [2023-11-19 07:54:27,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:27,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584741353] [2023-11-19 07:54:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:27,475 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 [2023-11-19 07:54:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:27,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:27,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:27,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:27,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:27,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:54:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584741353] [2023-11-19 07:54:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584741353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:27,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242900457] [2023-11-19 07:54:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:54:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:27,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 274 [2023-11-19 07:54:27,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:27,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:27,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 274 [2023-11-19 07:54:27,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:27,996 INFO L124 PetriNetUnfolderBase]: 151/355 cut-off events. [2023-11-19 07:54:27,996 INFO L125 PetriNetUnfolderBase]: For 460/462 co-relation queries the response was YES. [2023-11-19 07:54:27,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 355 events. 151/355 cut-off events. For 460/462 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1740 event pairs, 20 based on Foata normal form. 0/353 useless extension candidates. Maximal degree in co-relation 952. Up to 173 conditions per place. [2023-11-19 07:54:28,000 INFO L140 encePairwiseOnDemand]: 271/274 looper letters, 55 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-19 07:54:28,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 414 flow [2023-11-19 07:54:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-11-19 07:54:28,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46715328467153283 [2023-11-19 07:54:28,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-11-19 07:54:28,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-11-19 07:54:28,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:28,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-11-19 07:54:28,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:28,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:28,012 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 274.0) internal successors, (1370), 5 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:28,012 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 142 flow. Second operand 4 states and 512 transitions. [2023-11-19 07:54:28,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 414 flow [2023-11-19 07:54:28,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 334 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-11-19 07:54:28,023 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 117 flow [2023-11-19 07:54:28,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-11-19 07:54:28,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-19 07:54:28,027 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 117 flow [2023-11-19 07:54:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:28,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:28,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:28,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:28,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:54:28,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-19 07:54:28,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1104550693, now seen corresponding path program 2 times [2023-11-19 07:54:28,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:54:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656572785] [2023-11-19 07:54:28,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:54:28,240 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 [2023-11-19 07:54:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:54:28,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:54:28,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fda14a2-0408-4d8a-ade9-c759fe0261df/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:54:28,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:54:28,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:54:28,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:28,413 INFO L285 TraceCheckSpWp]: Computing forward predicates...