./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme --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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:45,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:45,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:00:45,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:45,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:46,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:46,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:46,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:46,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:46,024 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:46,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:46,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:46,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:46,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:46,029 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:46,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:46,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:46,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:46,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:46,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:46,032 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:00:46,032 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:00:46,033 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:00:46,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:46,034 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:00:46,034 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:46,035 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:46,035 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:46,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:46,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:46,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:46,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:46,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:46,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:46,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:46,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:46,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:46,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:46,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:46,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:46,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:46,042 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_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2023-11-26 12:00:46,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:46,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:46,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:46,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:46,466 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:46,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 12:00:49,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:49,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:49,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 12:00:49,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/data/278c7ee9d/3e6d216a3e7548649bb347f28dda966e/FLAG93eb7ea93 [2023-11-26 12:00:49,985 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/data/278c7ee9d/3e6d216a3e7548649bb347f28dda966e [2023-11-26 12:00:49,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:49,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:49,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:49,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:49,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:49,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b21972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50, skipping insertion in model container [2023-11-26 12:00:50,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:49" (1/1) ... [2023-11-26 12:00:50,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:50,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:50,485 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:50,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:50,626 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:50,626 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:50,634 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:50,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50 WrapperNode [2023-11-26 12:00:50,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:50,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:50,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:50,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:50,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,719 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2023-11-26 12:00:50,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:50,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:50,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:50,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:50,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,777 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 12:00:50,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:50,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:50,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:50,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:50,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (1/1) ... [2023-11-26 12:00:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:50,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:50,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:00:50,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:50,895 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:00:50,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:00:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:00:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:00:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:00:50,896 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:00:50,896 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:00:50,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:00:50,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:50,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:50,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:00:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:50,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:50,900 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:51,070 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:51,073 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:51,364 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:51,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:51,474 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:00:51,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:51 BoogieIcfgContainer [2023-11-26 12:00:51,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:51,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:51,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:51,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:51,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:49" (1/3) ... [2023-11-26 12:00:51,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed8a62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:51, skipping insertion in model container [2023-11-26 12:00:51,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:50" (2/3) ... [2023-11-26 12:00:51,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed8a62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:51, skipping insertion in model container [2023-11-26 12:00:51,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:51" (3/3) ... [2023-11-26 12:00:51,484 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-26 12:00:51,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:51,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 12:00:51,504 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:51,557 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:00:51,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 62 transitions, 140 flow [2023-11-26 12:00:51,631 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2023-11-26 12:00:51,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:51,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-26 12:00:51,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 62 transitions, 140 flow [2023-11-26 12:00:51,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 57 transitions, 126 flow [2023-11-26 12:00:51,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:51,657 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;@3ac265df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:51,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-26 12:00:51,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:51,661 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 12:00:51,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:51,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:51,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:00:51,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:51,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash 8400, now seen corresponding path program 1 times [2023-11-26 12:00:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880150645] [2023-11-26 12:00:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880150645] [2023-11-26 12:00:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880150645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:51,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:51,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644984356] [2023-11-26 12:00:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:51,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:51,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:52,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-26 12:00:52,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-26 12:00:52,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:52,256 INFO L124 PetriNetUnfolderBase]: 211/557 cut-off events. [2023-11-26 12:00:52,256 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 12:00:52,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 557 events. 211/557 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3589 event pairs, 179 based on Foata normal form. 32/526 useless extension candidates. Maximal degree in co-relation 915. Up to 289 conditions per place. [2023-11-26 12:00:52,266 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-26 12:00:52,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 170 flow [2023-11-26 12:00:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-26 12:00:52,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-26 12:00:52,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:52,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,307 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 142 transitions. [2023-11-26 12:00:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 170 flow [2023-11-26 12:00:52,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:52,319 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 12:00:52,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-26 12:00:52,326 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-11-26 12:00:52,327 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 12:00:52,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:52,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 12:00:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:52,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:52,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 8401, now seen corresponding path program 1 times [2023-11-26 12:00:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827823981] [2023-11-26 12:00:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827823981] [2023-11-26 12:00:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827823981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:00:52,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182567664] [2023-11-26 12:00:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:52,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-26 12:00:52,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-26 12:00:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:52,773 INFO L124 PetriNetUnfolderBase]: 211/556 cut-off events. [2023-11-26 12:00:52,773 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:00:52,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 556 events. 211/556 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3585 event pairs, 179 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 931. Up to 288 conditions per place. [2023-11-26 12:00:52,786 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-26 12:00:52,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 166 flow [2023-11-26 12:00:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-26 12:00:52,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-26 12:00:52,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:52,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-26 12:00:52,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,806 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 142 transitions. [2023-11-26 12:00:52,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 166 flow [2023-11-26 12:00:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:52,810 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 12:00:52,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 12:00:52,811 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-11-26 12:00:52,812 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 12:00:52,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:52,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:00:52,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:52,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:52,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 250490708, now seen corresponding path program 1 times [2023-11-26 12:00:52,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980326914] [2023-11-26 12:00:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980326914] [2023-11-26 12:00:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980326914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:52,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95358384] [2023-11-26 12:00:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:52,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:52,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-26 12:00:52,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:52,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-26 12:00:52,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,013 INFO L124 PetriNetUnfolderBase]: 212/554 cut-off events. [2023-11-26 12:00:53,014 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 12:00:53,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 554 events. 212/554 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3552 event pairs, 179 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 932. Up to 288 conditions per place. [2023-11-26 12:00:53,020 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-26 12:00:53,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 166 flow [2023-11-26 12:00:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-26 12:00:53,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-26 12:00:53,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,025 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 140 transitions. [2023-11-26 12:00:53,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 166 flow [2023-11-26 12:00:53,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,028 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-26 12:00:53,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-26 12:00:53,030 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-11-26 12:00:53,030 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-26 12:00:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:00:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:53,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:53,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash 250490709, now seen corresponding path program 1 times [2023-11-26 12:00:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:53,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783848736] [2023-11-26 12:00:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:53,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:53,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783848736] [2023-11-26 12:00:53,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783848736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:53,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:53,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8889111] [2023-11-26 12:00:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:53,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-26 12:00:53,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:53,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-26 12:00:53,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,373 INFO L124 PetriNetUnfolderBase]: 211/551 cut-off events. [2023-11-26 12:00:53,373 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-26 12:00:53,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 551 events. 211/551 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3538 event pairs, 178 based on Foata normal form. 2/495 useless extension candidates. Maximal degree in co-relation 928. Up to 285 conditions per place. [2023-11-26 12:00:53,379 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-26 12:00:53,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 162 flow [2023-11-26 12:00:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-26 12:00:53,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-26 12:00:53,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,385 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 142 transitions. [2023-11-26 12:00:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 162 flow [2023-11-26 12:00:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,393 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-26 12:00:53,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-26 12:00:53,395 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-11-26 12:00:53,396 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-26 12:00:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:53,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:53,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:53,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2010738991, now seen corresponding path program 1 times [2023-11-26 12:00:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172127873] [2023-11-26 12:00:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172127873] [2023-11-26 12:00:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172127873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:53,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:53,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468911054] [2023-11-26 12:00:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:53,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-26 12:00:53,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:53,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-26 12:00:53,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,738 INFO L124 PetriNetUnfolderBase]: 211/548 cut-off events. [2023-11-26 12:00:53,738 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-26 12:00:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 548 events. 211/548 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3532 event pairs, 95 based on Foata normal form. 4/500 useless extension candidates. Maximal degree in co-relation 925. Up to 276 conditions per place. [2023-11-26 12:00:53,746 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-26 12:00:53,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 160 flow [2023-11-26 12:00:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-26 12:00:53,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-26 12:00:53,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-26 12:00:53,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,751 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 142 transitions. [2023-11-26 12:00:53,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 160 flow [2023-11-26 12:00:53,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,755 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 110 flow [2023-11-26 12:00:53,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-26 12:00:53,758 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-11-26 12:00:53,759 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 110 flow [2023-11-26 12:00:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:53,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:53,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2010738990, now seen corresponding path program 1 times [2023-11-26 12:00:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:53,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146884139] [2023-11-26 12:00:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:53,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146884139] [2023-11-26 12:00:53,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146884139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:53,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:53,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93609586] [2023-11-26 12:00:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:53,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:53,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-26 12:00:53,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:53,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-26 12:00:53,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:53,980 INFO L124 PetriNetUnfolderBase]: 215/548 cut-off events. [2023-11-26 12:00:53,980 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-26 12:00:53,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 548 events. 215/548 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3530 event pairs, 95 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 935. Up to 284 conditions per place. [2023-11-26 12:00:53,986 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-26 12:00:53,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 160 flow [2023-11-26 12:00:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-26 12:00:53,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-26 12:00:53,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:53,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-26 12:00:53,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,991 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 3 states and 140 transitions. [2023-11-26 12:00:53,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 160 flow [2023-11-26 12:00:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:53,993 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 108 flow [2023-11-26 12:00:53,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-26 12:00:53,995 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-11-26 12:00:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 108 flow [2023-11-26 12:00:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:53,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:53,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:53,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash 16621651, now seen corresponding path program 1 times [2023-11-26 12:00:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247509869] [2023-11-26 12:00:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:54,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247509869] [2023-11-26 12:00:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247509869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:54,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:54,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732366076] [2023-11-26 12:00:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:54,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:54,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 62 [2023-11-26 12:00:54,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:54,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 62 [2023-11-26 12:00:54,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:54,202 INFO L124 PetriNetUnfolderBase]: 223/544 cut-off events. [2023-11-26 12:00:54,203 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-26 12:00:54,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 544 events. 223/544 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3479 event pairs, 107 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 943. Up to 272 conditions per place. [2023-11-26 12:00:54,208 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 20 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-26 12:00:54,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 158 flow [2023-11-26 12:00:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-26 12:00:54,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526881720430108 [2023-11-26 12:00:54,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-26 12:00:54,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-26 12:00:54,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:54,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-26 12:00:54,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,213 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 108 flow. Second operand 3 states and 140 transitions. [2023-11-26 12:00:54,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 158 flow [2023-11-26 12:00:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:54,215 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 106 flow [2023-11-26 12:00:54,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-26 12:00:54,216 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-11-26 12:00:54,217 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 106 flow [2023-11-26 12:00:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:54,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:54,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:00:54,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:54,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash 16621652, now seen corresponding path program 1 times [2023-11-26 12:00:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751687829] [2023-11-26 12:00:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:54,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:54,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751687829] [2023-11-26 12:00:54,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751687829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:54,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8228173] [2023-11-26 12:00:54,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:54,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:54,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 62 [2023-11-26 12:00:54,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:54,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 62 [2023-11-26 12:00:54,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:54,423 INFO L124 PetriNetUnfolderBase]: 211/524 cut-off events. [2023-11-26 12:00:54,423 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-26 12:00:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 524 events. 211/524 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3300 event pairs, 103 based on Foata normal form. 8/501 useless extension candidates. Maximal degree in co-relation 907. Up to 252 conditions per place. [2023-11-26 12:00:54,429 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 19 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-11-26 12:00:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 154 flow [2023-11-26 12:00:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-26 12:00:54,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2023-11-26 12:00:54,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-26 12:00:54,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-26 12:00:54,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:54,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-26 12:00:54,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,433 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 106 flow. Second operand 3 states and 142 transitions. [2023-11-26 12:00:54,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 154 flow [2023-11-26 12:00:54,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:54,435 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 104 flow [2023-11-26 12:00:54,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-26 12:00:54,436 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-11-26 12:00:54,436 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 104 flow [2023-11-26 12:00:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:54,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:54,437 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] [2023-11-26 12:00:54,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:54,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:54,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1115631955, now seen corresponding path program 1 times [2023-11-26 12:00:54,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:54,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91922443] [2023-11-26 12:00:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91922443] [2023-11-26 12:00:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91922443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:55,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:00:55,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209493189] [2023-11-26 12:00:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:55,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 62 [2023-11-26 12:00:55,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 104 flow. Second operand has 10 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:55,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:55,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 62 [2023-11-26 12:00:55,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:56,378 INFO L124 PetriNetUnfolderBase]: 563/1196 cut-off events. [2023-11-26 12:00:56,378 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-26 12:00:56,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 1196 events. 563/1196 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8706 event pairs, 168 based on Foata normal form. 24/1179 useless extension candidates. Maximal degree in co-relation 2163. Up to 365 conditions per place. [2023-11-26 12:00:56,391 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 39 selfloop transitions, 6 changer transitions 7/77 dead transitions. [2023-11-26 12:00:56,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 280 flow [2023-11-26 12:00:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:00:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 349 transitions. [2023-11-26 12:00:56,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7036290322580645 [2023-11-26 12:00:56,394 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 349 transitions. [2023-11-26 12:00:56,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 349 transitions. [2023-11-26 12:00:56,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:56,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 349 transitions. [2023-11-26 12:00:56,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.625) internal successors, (349), 8 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,399 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 104 flow. Second operand 8 states and 349 transitions. [2023-11-26 12:00:56,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 280 flow [2023-11-26 12:00:56,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:56,402 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 130 flow [2023-11-26 12:00:56,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2023-11-26 12:00:56,403 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-11-26 12:00:56,404 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 130 flow [2023-11-26 12:00:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.6) internal successors, (386), 10 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:56,404 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] [2023-11-26 12:00:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:00:56,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:56,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1115633209, now seen corresponding path program 1 times [2023-11-26 12:00:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:56,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362809003] [2023-11-26 12:00:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:56,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362809003] [2023-11-26 12:00:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362809003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:56,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966715551] [2023-11-26 12:00:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:56,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:56,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 62 [2023-11-26 12:00:56,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:56,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:56,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 62 [2023-11-26 12:00:56,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:57,022 INFO L124 PetriNetUnfolderBase]: 969/2031 cut-off events. [2023-11-26 12:00:57,023 INFO L125 PetriNetUnfolderBase]: For 118/138 co-relation queries the response was YES. [2023-11-26 12:00:57,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2031 events. 969/2031 cut-off events. For 118/138 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15925 event pairs, 129 based on Foata normal form. 20/1962 useless extension candidates. Maximal degree in co-relation 3717. Up to 745 conditions per place. [2023-11-26 12:00:57,043 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 49 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-11-26 12:00:57,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 353 flow [2023-11-26 12:00:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:00:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:00:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 364 transitions. [2023-11-26 12:00:57,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7338709677419355 [2023-11-26 12:00:57,046 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 364 transitions. [2023-11-26 12:00:57,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 364 transitions. [2023-11-26 12:00:57,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:57,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 364 transitions. [2023-11-26 12:00:57,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.5) internal successors, (364), 8 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) [2023-11-26 12:00:57,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:57,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:57,050 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 130 flow. Second operand 8 states and 364 transitions. [2023-11-26 12:00:57,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 353 flow [2023-11-26 12:00:57,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 342 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:57,055 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 191 flow [2023-11-26 12:00:57,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-11-26 12:00:57,056 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-11-26 12:00:57,056 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 191 flow [2023-11-26 12:00:57,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:57,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:57,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:57,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:00:57,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:57,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:57,058 INFO L85 PathProgramCache]: Analyzing trace with hash -751361990, now seen corresponding path program 1 times [2023-11-26 12:00:57,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:57,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788936991] [2023-11-26 12:00:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:57,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:57,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788936991] [2023-11-26 12:00:57,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788936991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:57,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:57,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:57,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540019892] [2023-11-26 12:00:57,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:57,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:57,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:57,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:00:57,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:57,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:57,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:00:57,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:58,429 INFO L124 PetriNetUnfolderBase]: 3779/6784 cut-off events. [2023-11-26 12:00:58,429 INFO L125 PetriNetUnfolderBase]: For 1705/1751 co-relation queries the response was YES. [2023-11-26 12:00:58,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14613 conditions, 6784 events. 3779/6784 cut-off events. For 1705/1751 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 58701 event pairs, 550 based on Foata normal form. 118/6862 useless extension candidates. Maximal degree in co-relation 14595. Up to 1457 conditions per place. [2023-11-26 12:00:58,495 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 77 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2023-11-26 12:00:58,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 640 flow [2023-11-26 12:00:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 492 transitions. [2023-11-26 12:00:58,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7214076246334311 [2023-11-26 12:00:58,498 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 492 transitions. [2023-11-26 12:00:58,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 492 transitions. [2023-11-26 12:00:58,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:58,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 492 transitions. [2023-11-26 12:00:58,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 44.72727272727273) internal successors, (492), 11 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) [2023-11-26 12:00:58,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,505 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,505 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 191 flow. Second operand 11 states and 492 transitions. [2023-11-26 12:00:58,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 640 flow [2023-11-26 12:00:58,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:58,643 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 445 flow [2023-11-26 12:00:58,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=445, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2023-11-26 12:00:58,644 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2023-11-26 12:00:58,644 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 445 flow [2023-11-26 12:00:58,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:58,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:58,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:00:58,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:00:58,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1277651404, now seen corresponding path program 1 times [2023-11-26 12:00:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964587477] [2023-11-26 12:00:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:58,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:59,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964587477] [2023-11-26 12:00:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964587477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:59,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:59,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 12:00:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313420734] [2023-11-26 12:00:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:00,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-26 12:01:00,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 445 flow. Second operand has 11 states, 11 states have (on average 34.54545454545455) internal successors, (380), 11 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:00,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:00,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-26 12:01:00,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:01,919 INFO L124 PetriNetUnfolderBase]: 4675/9872 cut-off events. [2023-11-26 12:01:01,919 INFO L125 PetriNetUnfolderBase]: For 10731/11077 co-relation queries the response was YES. [2023-11-26 12:01:01,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25542 conditions, 9872 events. 4675/9872 cut-off events. For 10731/11077 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 102539 event pairs, 3199 based on Foata normal form. 197/9363 useless extension candidates. Maximal degree in co-relation 25515. Up to 2719 conditions per place. [2023-11-26 12:01:02,161 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 84 selfloop transitions, 18 changer transitions 1/144 dead transitions. [2023-11-26 12:01:02,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 144 transitions, 1002 flow [2023-11-26 12:01:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:01:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 397 transitions. [2023-11-26 12:01:02,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403225806451613 [2023-11-26 12:01:02,164 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 397 transitions. [2023-11-26 12:01:02,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 397 transitions. [2023-11-26 12:01:02,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:02,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 397 transitions. [2023-11-26 12:01:02,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,168 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,169 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 445 flow. Second operand 10 states and 397 transitions. [2023-11-26 12:01:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 144 transitions, 1002 flow [2023-11-26 12:01:02,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 994 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:02,345 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 666 flow [2023-11-26 12:01:02,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=666, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2023-11-26 12:01:02,346 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-11-26 12:01:02,346 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 666 flow [2023-11-26 12:01:02,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.54545454545455) internal successors, (380), 11 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:02,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:02,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:01:02,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:02,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2111418681, now seen corresponding path program 1 times [2023-11-26 12:01:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128626832] [2023-11-26 12:01:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128626832] [2023-11-26 12:01:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128626832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992051707] [2023-11-26 12:01:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:02,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 62 [2023-11-26 12:01:02,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 666 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:02,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:02,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 62 [2023-11-26 12:01:02,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:04,599 INFO L124 PetriNetUnfolderBase]: 6054/11355 cut-off events. [2023-11-26 12:01:04,600 INFO L125 PetriNetUnfolderBase]: For 12051/12243 co-relation queries the response was YES. [2023-11-26 12:01:04,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30108 conditions, 11355 events. 6054/11355 cut-off events. For 12051/12243 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 113367 event pairs, 1920 based on Foata normal form. 116/10811 useless extension candidates. Maximal degree in co-relation 30074. Up to 4918 conditions per place. [2023-11-26 12:01:04,717 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 42 selfloop transitions, 23 changer transitions 43/148 dead transitions. [2023-11-26 12:01:04,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 1146 flow [2023-11-26 12:01:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:01:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:01:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 358 transitions. [2023-11-26 12:01:04,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217741935483871 [2023-11-26 12:01:04,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 358 transitions. [2023-11-26 12:01:04,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 358 transitions. [2023-11-26 12:01:04,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:04,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 358 transitions. [2023-11-26 12:01:04,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.75) internal successors, (358), 8 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,724 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:04,725 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 666 flow. Second operand 8 states and 358 transitions. [2023-11-26 12:01:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 1146 flow [2023-11-26 12:01:05,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 148 transitions, 1108 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:05,090 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 724 flow [2023-11-26 12:01:05,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2023-11-26 12:01:05,092 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 46 predicate places. [2023-11-26 12:01:05,092 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 724 flow [2023-11-26 12:01:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:01:05,094 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:05,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1848597805, now seen corresponding path program 1 times [2023-11-26 12:01:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:05,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598464324] [2023-11-26 12:01:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:05,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:05,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598464324] [2023-11-26 12:01:05,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598464324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:05,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:05,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349064540] [2023-11-26 12:01:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:05,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:01:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:01:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:05,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:05,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 724 flow. Second operand has 8 states, 8 states have (on average 37.75) internal successors, (302), 8 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:05,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:05,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:07,099 INFO L124 PetriNetUnfolderBase]: 2769/6528 cut-off events. [2023-11-26 12:01:07,099 INFO L125 PetriNetUnfolderBase]: For 13339/13537 co-relation queries the response was YES. [2023-11-26 12:01:07,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18796 conditions, 6528 events. 2769/6528 cut-off events. For 13339/13537 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 68462 event pairs, 1261 based on Foata normal form. 136/6193 useless extension candidates. Maximal degree in co-relation 18756. Up to 3278 conditions per place. [2023-11-26 12:01:07,162 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 27 selfloop transitions, 25 changer transitions 3/104 dead transitions. [2023-11-26 12:01:07,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 104 transitions, 850 flow [2023-11-26 12:01:07,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:01:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 281 transitions. [2023-11-26 12:01:07,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474654377880185 [2023-11-26 12:01:07,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 281 transitions. [2023-11-26 12:01:07,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 281 transitions. [2023-11-26 12:01:07,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:07,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 281 transitions. [2023-11-26 12:01:07,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.142857142857146) internal successors, (281), 7 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,168 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,168 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 724 flow. Second operand 7 states and 281 transitions. [2023-11-26 12:01:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 104 transitions, 850 flow [2023-11-26 12:01:07,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 741 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-11-26 12:01:07,500 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 661 flow [2023-11-26 12:01:07,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2023-11-26 12:01:07,502 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2023-11-26 12:01:07,502 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 661 flow [2023-11-26 12:01:07,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.75) internal successors, (302), 8 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:07,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:01:07,503 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:07,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -346362198, now seen corresponding path program 1 times [2023-11-26 12:01:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:07,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923116494] [2023-11-26 12:01:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:07,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923116494] [2023-11-26 12:01:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923116494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:07,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:07,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339103498] [2023-11-26 12:01:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:07,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:07,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-26 12:01:07,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 661 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:07,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-26 12:01:07,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:13,040 INFO L124 PetriNetUnfolderBase]: 23032/38928 cut-off events. [2023-11-26 12:01:13,040 INFO L125 PetriNetUnfolderBase]: For 50206/50270 co-relation queries the response was YES. [2023-11-26 12:01:13,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107272 conditions, 38928 events. 23032/38928 cut-off events. For 50206/50270 co-relation queries the response was YES. Maximal size of possible extension queue 3433. Compared 395838 event pairs, 4027 based on Foata normal form. 322/38714 useless extension candidates. Maximal degree in co-relation 107238. Up to 10839 conditions per place. [2023-11-26 12:01:13,364 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 43 selfloop transitions, 8 changer transitions 144/219 dead transitions. [2023-11-26 12:01:13,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 219 transitions, 1923 flow [2023-11-26 12:01:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:01:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2023-11-26 12:01:13,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112903225806452 [2023-11-26 12:01:13,368 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 441 transitions. [2023-11-26 12:01:13,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 441 transitions. [2023-11-26 12:01:13,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:13,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 441 transitions. [2023-11-26 12:01:13,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.1) internal successors, (441), 10 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,373 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:13,373 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 661 flow. Second operand 10 states and 441 transitions. [2023-11-26 12:01:13,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 219 transitions, 1923 flow [2023-11-26 12:01:14,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 219 transitions, 1847 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:01:14,306 INFO L231 Difference]: Finished difference. Result has 116 places, 57 transitions, 285 flow [2023-11-26 12:01:14,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=116, PETRI_TRANSITIONS=57} [2023-11-26 12:01:14,307 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 48 predicate places. [2023-11-26 12:01:14,307 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 57 transitions, 285 flow [2023-11-26 12:01:14,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:14,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:01:14,308 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -484372454, now seen corresponding path program 1 times [2023-11-26 12:01:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514810143] [2023-11-26 12:01:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514810143] [2023-11-26 12:01:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514810143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:14,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:14,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919636933] [2023-11-26 12:01:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:14,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-26 12:01:14,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 57 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:14,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:14,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-26 12:01:14,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:16,248 INFO L124 PetriNetUnfolderBase]: 7048/12553 cut-off events. [2023-11-26 12:01:16,248 INFO L125 PetriNetUnfolderBase]: For 27111/27111 co-relation queries the response was YES. [2023-11-26 12:01:16,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34012 conditions, 12553 events. 7048/12553 cut-off events. For 27111/27111 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 108848 event pairs, 2495 based on Foata normal form. 180/12617 useless extension candidates. Maximal degree in co-relation 33984. Up to 4114 conditions per place. [2023-11-26 12:01:16,374 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 51 selfloop transitions, 12 changer transitions 44/127 dead transitions. [2023-11-26 12:01:16,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 127 transitions, 856 flow [2023-11-26 12:01:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:01:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 389 transitions. [2023-11-26 12:01:16,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971326164874552 [2023-11-26 12:01:16,377 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 389 transitions. [2023-11-26 12:01:16,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 389 transitions. [2023-11-26 12:01:16,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:16,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 389 transitions. [2023-11-26 12:01:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.22222222222222) internal successors, (389), 9 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,381 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,381 INFO L175 Difference]: Start difference. First operand has 116 places, 57 transitions, 285 flow. Second operand 9 states and 389 transitions. [2023-11-26 12:01:16,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 127 transitions, 856 flow [2023-11-26 12:01:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 710 flow, removed 41 selfloop flow, removed 17 redundant places. [2023-11-26 12:01:16,829 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 277 flow [2023-11-26 12:01:16,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=277, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2023-11-26 12:01:16,830 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2023-11-26 12:01:16,831 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 277 flow [2023-11-26 12:01:16,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:16,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:01:16,832 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:16,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1744333441, now seen corresponding path program 1 times [2023-11-26 12:01:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306339061] [2023-11-26 12:01:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:16,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306339061] [2023-11-26 12:01:16,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306339061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629926982] [2023-11-26 12:01:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:16,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:16,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:16,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:19,457 INFO L124 PetriNetUnfolderBase]: 14780/24506 cut-off events. [2023-11-26 12:01:19,457 INFO L125 PetriNetUnfolderBase]: For 10648/10749 co-relation queries the response was YES. [2023-11-26 12:01:19,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52794 conditions, 24506 events. 14780/24506 cut-off events. For 10648/10749 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 213261 event pairs, 4383 based on Foata normal form. 904/24298 useless extension candidates. Maximal degree in co-relation 52772. Up to 12779 conditions per place. [2023-11-26 12:01:19,627 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 37 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-26 12:01:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 75 transitions, 418 flow [2023-11-26 12:01:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2023-11-26 12:01:19,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7459677419354839 [2023-11-26 12:01:19,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 185 transitions. [2023-11-26 12:01:19,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 185 transitions. [2023-11-26 12:01:19,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:19,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 185 transitions. [2023-11-26 12:01:19,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,631 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 277 flow. Second operand 4 states and 185 transitions. [2023-11-26 12:01:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 75 transitions, 418 flow [2023-11-26 12:01:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 381 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-26 12:01:19,876 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 286 flow [2023-11-26 12:01:19,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2023-11-26 12:01:19,877 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2023-11-26 12:01:19,877 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 286 flow [2023-11-26 12:01:19,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:19,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:19,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:19,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:01:19,878 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:19,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1978570856, now seen corresponding path program 1 times [2023-11-26 12:01:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465232855] [2023-11-26 12:01:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:19,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465232855] [2023-11-26 12:01:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465232855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:20,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:01:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584506692] [2023-11-26 12:01:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:01:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:01:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:01:20,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:20,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:20,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:20,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:20,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:22,237 INFO L124 PetriNetUnfolderBase]: 14166/23457 cut-off events. [2023-11-26 12:01:22,237 INFO L125 PetriNetUnfolderBase]: For 10006/13594 co-relation queries the response was YES. [2023-11-26 12:01:22,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58161 conditions, 23457 events. 14166/23457 cut-off events. For 10006/13594 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 198800 event pairs, 2326 based on Foata normal form. 985/23444 useless extension candidates. Maximal degree in co-relation 58144. Up to 10308 conditions per place. [2023-11-26 12:01:22,377 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 45 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2023-11-26 12:01:22,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 490 flow [2023-11-26 12:01:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:01:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:01:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2023-11-26 12:01:22,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7516129032258064 [2023-11-26 12:01:22,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 233 transitions. [2023-11-26 12:01:22,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 233 transitions. [2023-11-26 12:01:22,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:22,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 233 transitions. [2023-11-26 12:01:22,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,383 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,383 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 286 flow. Second operand 5 states and 233 transitions. [2023-11-26 12:01:22,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 490 flow [2023-11-26 12:01:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:22,601 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 351 flow [2023-11-26 12:01:22,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-11-26 12:01:22,602 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2023-11-26 12:01:22,602 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 351 flow [2023-11-26 12:01:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:22,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 12:01:22,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:22,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 194459655, now seen corresponding path program 1 times [2023-11-26 12:01:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:22,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047472408] [2023-11-26 12:01:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:22,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047472408] [2023-11-26 12:01:22,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047472408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:22,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:22,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:01:22,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610070870] [2023-11-26 12:01:22,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:22,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:22,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:22,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:22,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:22,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:24,915 INFO L124 PetriNetUnfolderBase]: 12002/19473 cut-off events. [2023-11-26 12:01:24,915 INFO L125 PetriNetUnfolderBase]: For 23590/33252 co-relation queries the response was YES. [2023-11-26 12:01:24,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58130 conditions, 19473 events. 12002/19473 cut-off events. For 23590/33252 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 154737 event pairs, 676 based on Foata normal form. 989/19664 useless extension candidates. Maximal degree in co-relation 58111. Up to 9168 conditions per place. [2023-11-26 12:01:25,018 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 53 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2023-11-26 12:01:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 617 flow [2023-11-26 12:01:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 281 transitions. [2023-11-26 12:01:25,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7553763440860215 [2023-11-26 12:01:25,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 281 transitions. [2023-11-26 12:01:25,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 281 transitions. [2023-11-26 12:01:25,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:25,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 281 transitions. [2023-11-26 12:01:25,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:25,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:25,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:25,024 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 351 flow. Second operand 6 states and 281 transitions. [2023-11-26 12:01:25,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 617 flow [2023-11-26 12:01:25,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 601 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:25,035 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 421 flow [2023-11-26 12:01:25,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2023-11-26 12:01:25,036 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2023-11-26 12:01:25,036 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 421 flow [2023-11-26 12:01:25,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:25,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:25,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 12:01:25,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1555583955, now seen corresponding path program 1 times [2023-11-26 12:01:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:25,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495507986] [2023-11-26 12:01:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:25,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495507986] [2023-11-26 12:01:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495507986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:25,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:25,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950921274] [2023-11-26 12:01:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:25,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:25,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:25,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 421 flow. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:25,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:25,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:27,803 INFO L124 PetriNetUnfolderBase]: 10840/21127 cut-off events. [2023-11-26 12:01:27,803 INFO L125 PetriNetUnfolderBase]: For 36552/40093 co-relation queries the response was YES. [2023-11-26 12:01:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63131 conditions, 21127 events. 10840/21127 cut-off events. For 36552/40093 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 215540 event pairs, 3543 based on Foata normal form. 450/19302 useless extension candidates. Maximal degree in co-relation 63110. Up to 5485 conditions per place. [2023-11-26 12:01:27,941 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 51 selfloop transitions, 7 changer transitions 4/105 dead transitions. [2023-11-26 12:01:27,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 669 flow [2023-11-26 12:01:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:01:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 310 transitions. [2023-11-26 12:01:27,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-26 12:01:27,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 310 transitions. [2023-11-26 12:01:27,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 310 transitions. [2023-11-26 12:01:27,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:27,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 310 transitions. [2023-11-26 12:01:27,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:27,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:27,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:27,950 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 421 flow. Second operand 7 states and 310 transitions. [2023-11-26 12:01:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 669 flow [2023-11-26 12:01:28,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 638 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-26 12:01:28,029 INFO L231 Difference]: Finished difference. Result has 97 places, 73 transitions, 425 flow [2023-11-26 12:01:28,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=97, PETRI_TRANSITIONS=73} [2023-11-26 12:01:28,030 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2023-11-26 12:01:28,030 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 73 transitions, 425 flow [2023-11-26 12:01:28,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:28,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:28,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:28,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 12:01:28,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:28,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:28,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1785915741, now seen corresponding path program 2 times [2023-11-26 12:01:28,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:28,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417722982] [2023-11-26 12:01:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:28,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417722982] [2023-11-26 12:01:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417722982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:28,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:28,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392186627] [2023-11-26 12:01:28,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:28,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:01:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:01:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:01:28,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 62 [2023-11-26 12:01:28,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 73 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:28,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:28,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 62 [2023-11-26 12:01:28,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:31,275 INFO L124 PetriNetUnfolderBase]: 14906/22997 cut-off events. [2023-11-26 12:01:31,275 INFO L125 PetriNetUnfolderBase]: For 42124/52863 co-relation queries the response was YES. [2023-11-26 12:01:31,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73188 conditions, 22997 events. 14906/22997 cut-off events. For 42124/52863 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 176690 event pairs, 495 based on Foata normal form. 1018/23038 useless extension candidates. Maximal degree in co-relation 73164. Up to 9748 conditions per place. [2023-11-26 12:01:31,396 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 51 selfloop transitions, 18 changer transitions 2/103 dead transitions. [2023-11-26 12:01:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 660 flow [2023-11-26 12:01:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:01:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:01:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2023-11-26 12:01:31,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7350230414746544 [2023-11-26 12:01:31,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2023-11-26 12:01:31,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2023-11-26 12:01:31,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:31,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2023-11-26 12:01:31,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,403 INFO L175 Difference]: Start difference. First operand has 97 places, 73 transitions, 425 flow. Second operand 7 states and 319 transitions. [2023-11-26 12:01:31,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 660 flow [2023-11-26 12:01:31,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 628 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:31,476 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 444 flow [2023-11-26 12:01:31,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2023-11-26 12:01:31,477 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 31 predicate places. [2023-11-26 12:01:31,477 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 444 flow [2023-11-26 12:01:31,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:31,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:31,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 12:01:31,478 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-26 12:01:31,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:31,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1861519922, now seen corresponding path program 1 times [2023-11-26 12:01:31,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:31,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204168214] [2023-11-26 12:01:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:31,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204168214] [2023-11-26 12:01:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204168214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:31,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:31,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:01:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130130373] [2023-11-26 12:01:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:31,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 62 [2023-11-26 12:01:31,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:31,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:31,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 62 [2023-11-26 12:01:31,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:33,665 INFO L124 PetriNetUnfolderBase]: 8562/17042 cut-off events. [2023-11-26 12:01:33,665 INFO L125 PetriNetUnfolderBase]: For 39208/42388 co-relation queries the response was YES. [2023-11-26 12:01:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53621 conditions, 17042 events. 8562/17042 cut-off events. For 39208/42388 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 178228 event pairs, 1196 based on Foata normal form. 289/15174 useless extension candidates. Maximal degree in co-relation 53598. Up to 7766 conditions per place. [2023-11-26 12:01:33,769 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2023-11-26 12:01:33,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 600 flow [2023-11-26 12:01:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2023-11-26 12:01:33,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7123655913978495 [2023-11-26 12:01:33,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 265 transitions. [2023-11-26 12:01:33,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 265 transitions. [2023-11-26 12:01:33,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:33,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 265 transitions. [2023-11-26 12:01:33,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,774 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 444 flow. Second operand 6 states and 265 transitions. [2023-11-26 12:01:33,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 600 flow [2023-11-26 12:01:34,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 551 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-26 12:01:34,564 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2023-11-26 12:01:34,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2023-11-26 12:01:34,565 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 26 predicate places. [2023-11-26 12:01:34,565 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2023-11-26 12:01:34,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:34,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-11-26 12:01:34,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-11-26 12:01:34,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-11-26 12:01:34,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-11-26 12:01:34,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-11-26 12:01:34,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-11-26 12:01:34,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-11-26 12:01:34,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-11-26 12:01:34,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-11-26 12:01:34,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-11-26 12:01:34,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-11-26 12:01:34,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-11-26 12:01:34,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-11-26 12:01:34,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-11-26 12:01:34,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 12:01:34,578 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:34,587 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:01:34,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:01:34,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:01:34 BasicIcfg [2023-11-26 12:01:34,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:01:34,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:01:34,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:01:34,599 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:01:34,599 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:51" (3/4) ... [2023-11-26 12:01:34,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:01:34,605 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-26 12:01:34,605 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-26 12:01:34,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-26 12:01:34,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-26 12:01:34,612 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2023-11-26 12:01:34,612 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-26 12:01:34,612 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-26 12:01:34,613 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:01:34,706 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:01:34,707 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:01:34,707 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:01:34,708 INFO L158 Benchmark]: Toolchain (without parser) took 44718.33ms. Allocated memory was 159.4MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 129.1MB in the beginning and 10.3GB in the end (delta: -10.1GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2023-11-26 12:01:34,709 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 80.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:01:34,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.92ms. Allocated memory is still 159.4MB. Free memory was 128.9MB in the beginning and 110.7MB in the end (delta: 18.2MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-26 12:01:34,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.04ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:01:34,710 INFO L158 Benchmark]: Boogie Preprocessor took 93.83ms. Allocated memory is still 159.4MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:01:34,710 INFO L158 Benchmark]: RCFGBuilder took 658.67ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 110.0MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:01:34,711 INFO L158 Benchmark]: TraceAbstraction took 43120.24ms. Allocated memory was 159.4MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 109.3MB in the beginning and 10.3GB in the end (delta: -10.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2023-11-26 12:01:34,711 INFO L158 Benchmark]: Witness Printer took 109.43ms. Allocated memory is still 11.9GB. Free memory was 10.3GB in the beginning and 10.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:01:34,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 130.0MB. Free memory was 102.7MB in the beginning and 102.7MB in the end (delta: 80.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.92ms. Allocated memory is still 159.4MB. Free memory was 128.9MB in the beginning and 110.7MB in the end (delta: 18.2MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.04ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.83ms. Allocated memory is still 159.4MB. Free memory was 108.6MB in the beginning and 106.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.67ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 110.0MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 43120.24ms. Allocated memory was 159.4MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 109.3MB in the beginning and 10.3GB in the end (delta: -10.2GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 109.43ms. Allocated memory is still 11.9GB. Free memory was 10.3GB in the beginning and 10.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 786]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 91 locations, 14 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: 43.0s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1244 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1034 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3617 IncrementalHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 50 mSDtfsCounter, 3617 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=13, InterpolantAutomatonStates: 130, 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, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 3325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:01:34,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd857be1-9536-444a-aa64-33cdbc248182/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE