./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_tso.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_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/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_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/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_fcfc4328-47f8-4866-9935-cde315d4948c/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 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:47,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:47,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:46:47,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:47,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:48,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:48,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:48,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:48,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:48,019 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:48,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:48,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:48,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:48,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:48,022 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:48,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:48,023 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:48,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:48,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:48,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:48,025 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:46:48,025 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:46:48,026 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:46:48,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:48,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:46:48,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:46:48,027 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:48,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:48,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:48,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:48,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:48,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:48,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:48,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:48,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:48,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:48,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:48,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:48,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:48,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:48,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:48,032 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_fcfc4328-47f8-4866-9935-cde315d4948c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2023-11-26 11:46:48,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:48,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:48,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:48,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:48,307 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:48,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-26 11:46:51,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:51,782 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:51,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-26 11:46:51,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/data/bc4ab143d/81a0a55e5fbc4d678d09776e920676fe/FLAG0495c06da [2023-11-26 11:46:51,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/data/bc4ab143d/81a0a55e5fbc4d678d09776e920676fe [2023-11-26 11:46:51,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:51,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:51,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:51,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:51,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:51,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da6e137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:51, skipping insertion in model container [2023-11-26 11:46:51,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:51" (1/1) ... [2023-11-26 11:46:51,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:52,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:52,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:52,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:52,610 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:46:52,611 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:46:52,619 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:52,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52 WrapperNode [2023-11-26 11:46:52,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:52,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:52,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:52,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:52,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,697 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 290 [2023-11-26 11:46:52,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:52,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:52,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:52,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:52,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,744 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 11:46:52,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:52,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:52,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:52,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:52,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (1/1) ... [2023-11-26 11:46:52,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:52,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:52,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcfc4328-47f8-4866-9935-cde315d4948c/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:46:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:46:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:46:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:46:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:46:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:46:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:46:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:46:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:46:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:46:52,881 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:46:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:46:52,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:46:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:46:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:46:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:46:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:46:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:46:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:46:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:46:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:46:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:52,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:52,888 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 11:46:53,125 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:53,127 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:53,882 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:54,291 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:54,292 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:46:54,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:54 BoogieIcfgContainer [2023-11-26 11:46:54,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:54,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:54,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:54,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:54,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:51" (1/3) ... [2023-11-26 11:46:54,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721e56c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:54, skipping insertion in model container [2023-11-26 11:46:54,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:52" (2/3) ... [2023-11-26 11:46:54,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721e56c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:54, skipping insertion in model container [2023-11-26 11:46:54,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:54" (3/3) ... [2023-11-26 11:46:54,308 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2023-11-26 11:46:54,328 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:54,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 11:46:54,328 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:46:54,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:46:54,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 68 transitions, 152 flow [2023-11-26 11:46:54,540 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-26 11:46:54,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:46:54,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-26 11:46:54,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 68 transitions, 152 flow [2023-11-26 11:46:54,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 64 transitions, 140 flow [2023-11-26 11:46:54,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:54,579 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;@277d73f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:54,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-26 11:46:54,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:46:54,584 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:46:54,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:46:54,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:54,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:46:54,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:46:54,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 21563, now seen corresponding path program 1 times [2023-11-26 11:46:54,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:54,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053538096] [2023-11-26 11:46:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:54,981 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 11:46:54,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053538096] [2023-11-26 11:46:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053538096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:46:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021505773] [2023-11-26 11:46:54,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:55,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-26 11:46:55,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 11:46:55,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:55,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-26 11:46:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:58,996 INFO L124 PetriNetUnfolderBase]: 8717/13893 cut-off events. [2023-11-26 11:46:58,996 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-26 11:46:59,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25836 conditions, 13893 events. 8717/13893 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 108312 event pairs, 6773 based on Foata normal form. 648/13201 useless extension candidates. Maximal degree in co-relation 25821. Up to 9193 conditions per place. [2023-11-26 11:46:59,168 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 43 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-26 11:46:59,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 250 flow [2023-11-26 11:46:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:46:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-26 11:46:59,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-26 11:46:59,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-26 11:46:59,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-26 11:46:59,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:59,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-26 11:46:59,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:59,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:59,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:59,208 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 140 flow. Second operand 3 states and 147 transitions. [2023-11-26 11:46:59,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 250 flow [2023-11-26 11:46:59,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:46:59,220 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 132 flow [2023-11-26 11:46:59,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-11-26 11:46:59,226 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-26 11:46:59,226 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 132 flow [2023-11-26 11:46:59,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 11:46:59,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:59,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:46:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:46:59,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:46:59,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash 21564, now seen corresponding path program 1 times [2023-11-26 11:46:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:59,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478685989] [2023-11-26 11:46:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:59,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:59,375 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 11:46:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478685989] [2023-11-26 11:46:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478685989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:59,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:59,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:46:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997403192] [2023-11-26 11:46:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:59,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:59,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-26 11:46:59,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 11:46:59,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:59,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-26 11:46:59,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:02,977 INFO L124 PetriNetUnfolderBase]: 8717/13892 cut-off events. [2023-11-26 11:47:02,978 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-11-26 11:47:03,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26156 conditions, 13892 events. 8717/13892 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 108402 event pairs, 6773 based on Foata normal form. 1/12553 useless extension candidates. Maximal degree in co-relation 26145. Up to 9192 conditions per place. [2023-11-26 11:47:03,120 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 42 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-26 11:47:03,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 246 flow [2023-11-26 11:47:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-26 11:47:03,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-26 11:47:03,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-26 11:47:03,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-26 11:47:03,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:03,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-26 11:47:03,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:03,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:03,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:03,129 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 132 flow. Second operand 3 states and 147 transitions. [2023-11-26 11:47:03,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 246 flow [2023-11-26 11:47:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:03,173 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-26 11:47:03,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-26 11:47:03,184 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2023-11-26 11:47:03,185 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-26 11:47:03,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 11:47:03,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:03,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:03,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:03,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash 643055846, now seen corresponding path program 1 times [2023-11-26 11:47:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:03,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969196808] [2023-11-26 11:47:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:03,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:03,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969196808] [2023-11-26 11:47:03,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969196808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:03,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:03,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322022107] [2023-11-26 11:47:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:03,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-26 11:47:03,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 11:47:03,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:03,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-26 11:47:03,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:06,579 INFO L124 PetriNetUnfolderBase]: 8719/13891 cut-off events. [2023-11-26 11:47:06,579 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-11-26 11:47:06,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26160 conditions, 13891 events. 8719/13891 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 108433 event pairs, 5595 based on Foata normal form. 0/12558 useless extension candidates. Maximal degree in co-relation 26149. Up to 9193 conditions per place. [2023-11-26 11:47:06,696 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 43 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-26 11:47:06,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 246 flow [2023-11-26 11:47:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-26 11:47:06,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2023-11-26 11:47:06,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-26 11:47:06,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-26 11:47:06,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:06,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-26 11:47:06,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 11:47:06,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:06,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:06,709 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 145 transitions. [2023-11-26 11:47:06,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 246 flow [2023-11-26 11:47:06,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:06,745 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-26 11:47:06,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-26 11:47:06,747 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-26 11:47:06,747 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-26 11:47:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 11:47:06,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:06,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:06,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:47:06,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:06,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash 643055847, now seen corresponding path program 1 times [2023-11-26 11:47:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126594907] [2023-11-26 11:47:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:06,906 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 11:47:06,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:06,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126594907] [2023-11-26 11:47:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126594907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23345251] [2023-11-26 11:47:06,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:06,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-26 11:47:06,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 11:47:06,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:06,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-26 11:47:06,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:09,274 INFO L124 PetriNetUnfolderBase]: 8717/13777 cut-off events. [2023-11-26 11:47:09,275 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2023-11-26 11:47:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26043 conditions, 13777 events. 8717/13777 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 106824 event pairs, 6879 based on Foata normal form. 3/12448 useless extension candidates. Maximal degree in co-relation 26033. Up to 9188 conditions per place. [2023-11-26 11:47:09,398 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 42 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-26 11:47:09,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 242 flow [2023-11-26 11:47:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-26 11:47:09,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-26 11:47:09,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-26 11:47:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-26 11:47:09,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:09,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-26 11:47:09,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:09,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:09,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:09,405 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 147 transitions. [2023-11-26 11:47:09,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 242 flow [2023-11-26 11:47:09,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:09,439 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-26 11:47:09,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-26 11:47:09,453 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-26 11:47:09,453 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-26 11:47:09,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 11:47:09,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:09,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:09,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:09,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1723237501, now seen corresponding path program 1 times [2023-11-26 11:47:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:09,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455591205] [2023-11-26 11:47:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:09,756 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 11:47:09,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455591205] [2023-11-26 11:47:09,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455591205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:09,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:09,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:09,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966846656] [2023-11-26 11:47:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:09,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2023-11-26 11:47:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2023-11-26 11:47:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:11,902 INFO L124 PetriNetUnfolderBase]: 7180/11122 cut-off events. [2023-11-26 11:47:11,903 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-26 11:47:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21263 conditions, 11122 events. 7180/11122 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 83074 event pairs, 1032 based on Foata normal form. 0/10648 useless extension candidates. Maximal degree in co-relation 21253. Up to 8189 conditions per place. [2023-11-26 11:47:11,996 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 48 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-11-26 11:47:11,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 272 flow [2023-11-26 11:47:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-26 11:47:11,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2023-11-26 11:47:12,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-26 11:47:12,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-26 11:47:12,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:12,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-26 11:47:12,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 11:47:12,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:12,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:12,004 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 156 transitions. [2023-11-26 11:47:12,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 272 flow [2023-11-26 11:47:12,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:12,011 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-26 11:47:12,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-26 11:47:12,014 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2023-11-26 11:47:12,015 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-26 11:47:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:12,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:12,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:47:12,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:12,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235370, now seen corresponding path program 1 times [2023-11-26 11:47:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45778817] [2023-11-26 11:47:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:12,134 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 11:47:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:12,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45778817] [2023-11-26 11:47:12,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45778817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:12,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:12,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467466530] [2023-11-26 11:47:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:12,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-26 11:47:12,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:12,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:12,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-26 11:47:12,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:14,355 INFO L124 PetriNetUnfolderBase]: 7180/11395 cut-off events. [2023-11-26 11:47:14,355 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2023-11-26 11:47:14,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21774 conditions, 11395 events. 7180/11395 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 87320 event pairs, 4074 based on Foata normal form. 15/10790 useless extension candidates. Maximal degree in co-relation 21763. Up to 7561 conditions per place. [2023-11-26 11:47:14,481 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 40 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 11:47:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 234 flow [2023-11-26 11:47:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-26 11:47:14,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2023-11-26 11:47:14,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-26 11:47:14,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-26 11:47:14,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:14,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-26 11:47:14,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 11:47:14,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:14,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:14,489 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 145 transitions. [2023-11-26 11:47:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 234 flow [2023-11-26 11:47:14,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:14,495 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-26 11:47:14,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-26 11:47:14,500 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-11-26 11:47:14,500 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-26 11:47:14,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:14,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:14,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:47:14,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235369, now seen corresponding path program 1 times [2023-11-26 11:47:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:14,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015622165] [2023-11-26 11:47:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:14,583 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 11:47:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:14,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015622165] [2023-11-26 11:47:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015622165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:14,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:14,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054347417] [2023-11-26 11:47:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:14,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:14,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:14,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-26 11:47:14,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 11:47:14,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:14,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-26 11:47:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:16,747 INFO L124 PetriNetUnfolderBase]: 7202/11462 cut-off events. [2023-11-26 11:47:16,747 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2023-11-26 11:47:16,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21652 conditions, 11462 events. 7202/11462 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 87340 event pairs, 3444 based on Foata normal form. 0/10785 useless extension candidates. Maximal degree in co-relation 21642. Up to 7598 conditions per place. [2023-11-26 11:47:16,822 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 41 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 11:47:16,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 232 flow [2023-11-26 11:47:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-26 11:47:16,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7009803921568627 [2023-11-26 11:47:16,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-26 11:47:16,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-26 11:47:16,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:16,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-26 11:47:16,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:47:16,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:16,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:16,828 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 143 transitions. [2023-11-26 11:47:16,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 232 flow [2023-11-26 11:47:16,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:16,833 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-26 11:47:16,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-26 11:47:16,834 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-11-26 11:47:16,835 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-26 11:47:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 11:47:16,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:16,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:47:16,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:16,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash -838545296, now seen corresponding path program 1 times [2023-11-26 11:47:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328816534] [2023-11-26 11:47:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:16,896 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 11:47:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:16,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328816534] [2023-11-26 11:47:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328816534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:16,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:16,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821798183] [2023-11-26 11:47:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:16,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:16,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:16,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-26 11:47:16,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 11:47:16,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:16,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-26 11:47:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:18,409 INFO L124 PetriNetUnfolderBase]: 7276/11431 cut-off events. [2023-11-26 11:47:18,410 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2023-11-26 11:47:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21725 conditions, 11431 events. 7276/11431 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 84940 event pairs, 3622 based on Foata normal form. 0/10865 useless extension candidates. Maximal degree in co-relation 21715. Up to 7554 conditions per place. [2023-11-26 11:47:18,483 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 41 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-26 11:47:18,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 230 flow [2023-11-26 11:47:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-26 11:47:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7009803921568627 [2023-11-26 11:47:18,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-26 11:47:18,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-26 11:47:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-26 11:47:18,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:47:18,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:18,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:18,490 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 143 transitions. [2023-11-26 11:47:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 230 flow [2023-11-26 11:47:18,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:18,500 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 11:47:18,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, 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 11:47:18,503 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-26 11:47:18,504 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 11:47:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 11:47:18,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:18,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:18,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:47:18,505 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:18,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -838545295, now seen corresponding path program 1 times [2023-11-26 11:47:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:18,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394200882] [2023-11-26 11:47:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:18,598 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 11:47:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394200882] [2023-11-26 11:47:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394200882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235950099] [2023-11-26 11:47:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:18,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:18,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-26 11:47:18,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:18,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:18,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-26 11:47:18,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:20,121 INFO L124 PetriNetUnfolderBase]: 7180/11287 cut-off events. [2023-11-26 11:47:20,121 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-11-26 11:47:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21470 conditions, 11287 events. 7180/11287 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83514 event pairs, 3592 based on Foata normal form. 45/10769 useless extension candidates. Maximal degree in co-relation 21460. Up to 7413 conditions per place. [2023-11-26 11:47:20,192 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 40 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:47:20,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 226 flow [2023-11-26 11:47:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-26 11:47:20,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2023-11-26 11:47:20,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-26 11:47:20,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-26 11:47:20,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:20,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-26 11:47:20,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 11:47:20,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:20,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:20,196 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 145 transitions. [2023-11-26 11:47:20,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 226 flow [2023-11-26 11:47:20,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:20,201 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 11:47:20,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, 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 11:47:20,202 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2023-11-26 11:47:20,202 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 11:47:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:47:20,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:20,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1572447755, now seen corresponding path program 1 times [2023-11-26 11:47:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296340712] [2023-11-26 11:47:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:20,349 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 11:47:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296340712] [2023-11-26 11:47:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296340712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:20,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382882673] [2023-11-26 11:47:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:20,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2023-11-26 11:47:20,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 11:47:20,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:20,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2023-11-26 11:47:20,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:21,636 INFO L124 PetriNetUnfolderBase]: 5956/9304 cut-off events. [2023-11-26 11:47:21,636 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-11-26 11:47:21,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 9304 events. 5956/9304 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 66230 event pairs, 1060 based on Foata normal form. 0/9218 useless extension candidates. Maximal degree in co-relation 17803. Up to 6517 conditions per place. [2023-11-26 11:47:21,689 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 40 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2023-11-26 11:47:21,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 236 flow [2023-11-26 11:47:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-26 11:47:21,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2023-11-26 11:47:21,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-26 11:47:21,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-26 11:47:21,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:21,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-26 11:47:21,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 11:47:21,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,693 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 150 transitions. [2023-11-26 11:47:21,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 236 flow [2023-11-26 11:47:21,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:21,695 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 112 flow [2023-11-26 11:47:21,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, 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=112, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-11-26 11:47:21,696 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-11-26 11:47:21,696 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 112 flow [2023-11-26 11:47:21,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 11:47:21,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:21,697 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 11:47:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:47:21,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:21,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,697 INFO L85 PathProgramCache]: Analyzing trace with hash -363170853, now seen corresponding path program 1 times [2023-11-26 11:47:21,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853195506] [2023-11-26 11:47:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:22,809 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 11:47:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853195506] [2023-11-26 11:47:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853195506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:22,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:22,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:47:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139683449] [2023-11-26 11:47:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:22,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:47:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:22,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:47:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:47:23,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 68 [2023-11-26 11:47:23,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 112 flow. Second operand has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:23,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 68 [2023-11-26 11:47:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:24,579 INFO L124 PetriNetUnfolderBase]: 5318/8452 cut-off events. [2023-11-26 11:47:24,579 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2023-11-26 11:47:24,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16205 conditions, 8452 events. 5318/8452 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 61012 event pairs, 1114 based on Foata normal form. 225/8527 useless extension candidates. Maximal degree in co-relation 16193. Up to 6156 conditions per place. [2023-11-26 11:47:24,628 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 40 selfloop transitions, 4 changer transitions 13/77 dead transitions. [2023-11-26 11:47:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 282 flow [2023-11-26 11:47:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:47:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:47:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2023-11-26 11:47:24,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483193277310925 [2023-11-26 11:47:24,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 261 transitions. [2023-11-26 11:47:24,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 261 transitions. [2023-11-26 11:47:24,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:24,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 261 transitions. [2023-11-26 11:47:24,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 11:47:24,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:47:24,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:47:24,633 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 112 flow. Second operand 7 states and 261 transitions. [2023-11-26 11:47:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 282 flow [2023-11-26 11:47:24,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:24,640 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 112 flow [2023-11-26 11:47:24,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-26 11:47:24,641 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-26 11:47:24,641 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 112 flow [2023-11-26 11:47:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:24,641 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 11:47:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:47:24,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -363169320, now seen corresponding path program 1 times [2023-11-26 11:47:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055097153] [2023-11-26 11:47:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,014 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 11:47:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:25,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055097153] [2023-11-26 11:47:25,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055097153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:25,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:25,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:25,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904969387] [2023-11-26 11:47:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-26 11:47:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-26 11:47:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:27,575 INFO L124 PetriNetUnfolderBase]: 14323/21020 cut-off events. [2023-11-26 11:47:27,575 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-26 11:47:27,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40770 conditions, 21020 events. 14323/21020 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 146615 event pairs, 1419 based on Foata normal form. 576/21536 useless extension candidates. Maximal degree in co-relation 40759. Up to 12481 conditions per place. [2023-11-26 11:47:27,666 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 60 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2023-11-26 11:47:27,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 330 flow [2023-11-26 11:47:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-26 11:47:27,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948529411764706 [2023-11-26 11:47:27,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-26 11:47:27,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-26 11:47:27,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:27,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-26 11:47:27,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 11:47:27,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 11:47:27,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 11:47:27,671 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 112 flow. Second operand 4 states and 189 transitions. [2023-11-26 11:47:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 330 flow [2023-11-26 11:47:27,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:47:27,673 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 147 flow [2023-11-26 11:47:27,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-26 11:47:27,674 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2023-11-26 11:47:27,674 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 147 flow [2023-11-26 11:47:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:27,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:27,674 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 11:47:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:47:27,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:27,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -704292590, now seen corresponding path program 1 times [2023-11-26 11:47:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040839905] [2023-11-26 11:47:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:27,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:27,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040839905] [2023-11-26 11:47:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040839905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:27,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:47:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539190928] [2023-11-26 11:47:27,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:27,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:47:27,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:27,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:47:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:47:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-26 11:47:28,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 11:47:28,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:28,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-26 11:47:28,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:29,849 INFO L124 PetriNetUnfolderBase]: 10227/15116 cut-off events. [2023-11-26 11:47:29,849 INFO L125 PetriNetUnfolderBase]: For 3360/3360 co-relation queries the response was YES. [2023-11-26 11:47:29,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33988 conditions, 15116 events. 10227/15116 cut-off events. For 3360/3360 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 99987 event pairs, 655 based on Foata normal form. 512/15572 useless extension candidates. Maximal degree in co-relation 33975. Up to 7297 conditions per place. [2023-11-26 11:47:29,937 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 77 selfloop transitions, 10 changer transitions 1/105 dead transitions. [2023-11-26 11:47:29,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 460 flow [2023-11-26 11:47:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:47:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:47:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2023-11-26 11:47:29,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2023-11-26 11:47:29,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 240 transitions. [2023-11-26 11:47:29,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 240 transitions. [2023-11-26 11:47:29,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:29,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 240 transitions. [2023-11-26 11:47:29,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 11:47:29,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 11:47:29,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 11:47:29,950 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 147 flow. Second operand 5 states and 240 transitions. [2023-11-26 11:47:29,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 460 flow [2023-11-26 11:47:29,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 105 transitions, 449 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:29,958 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 199 flow [2023-11-26 11:47:29,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-26 11:47:29,960 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2023-11-26 11:47:29,960 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 199 flow [2023-11-26 11:47:29,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 11:47:29,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:29,961 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 11:47:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:47:29,961 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:29,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2123994474, now seen corresponding path program 1 times [2023-11-26 11:47:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257152280] [2023-11-26 11:47:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,358 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 11:47:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257152280] [2023-11-26 11:47:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257152280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:30,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:47:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253530201] [2023-11-26 11:47:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:30,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:30,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:30,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-26 11:47:30,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 11:47:30,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:30,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-26 11:47:30,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:31,762 INFO L124 PetriNetUnfolderBase]: 6019/8844 cut-off events. [2023-11-26 11:47:31,762 INFO L125 PetriNetUnfolderBase]: For 6237/6237 co-relation queries the response was YES. [2023-11-26 11:47:31,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22276 conditions, 8844 events. 6019/8844 cut-off events. For 6237/6237 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 51623 event pairs, 463 based on Foata normal form. 320/9108 useless extension candidates. Maximal degree in co-relation 22261. Up to 2528 conditions per place. [2023-11-26 11:47:31,809 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 92 selfloop transitions, 14 changer transitions 1/124 dead transitions. [2023-11-26 11:47:31,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 600 flow [2023-11-26 11:47:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:47:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:47:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2023-11-26 11:47:31,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-26 11:47:31,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 289 transitions. [2023-11-26 11:47:31,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 289 transitions. [2023-11-26 11:47:31,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:31,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 289 transitions. [2023-11-26 11:47:31,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 11:47:31,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 11:47:31,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 11:47:31,815 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 199 flow. Second operand 6 states and 289 transitions. [2023-11-26 11:47:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 600 flow [2023-11-26 11:47:31,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 570 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 11:47:31,853 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 249 flow [2023-11-26 11:47:31,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-26 11:47:31,854 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2023-11-26 11:47:31,854 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 249 flow [2023-11-26 11:47:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 11:47:31,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:31,854 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] [2023-11-26 11:47:31,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:47:31,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:31,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 408406014, now seen corresponding path program 1 times [2023-11-26 11:47:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906318230] [2023-11-26 11:47:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:32,340 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 11:47:32,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:32,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906318230] [2023-11-26 11:47:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906318230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:32,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:32,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822340510] [2023-11-26 11:47:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:32,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:47:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:47:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:32,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-26 11:47:32,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 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 11:47:32,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:32,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-26 11:47:32,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:33,425 INFO L124 PetriNetUnfolderBase]: 4051/5804 cut-off events. [2023-11-26 11:47:33,425 INFO L125 PetriNetUnfolderBase]: For 6125/6125 co-relation queries the response was YES. [2023-11-26 11:47:33,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15845 conditions, 5804 events. 4051/5804 cut-off events. For 6125/6125 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 31441 event pairs, 383 based on Foata normal form. 112/5860 useless extension candidates. Maximal degree in co-relation 15829. Up to 1840 conditions per place. [2023-11-26 11:47:33,455 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 81 selfloop transitions, 18 changer transitions 1/117 dead transitions. [2023-11-26 11:47:33,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 582 flow [2023-11-26 11:47:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:47:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:47:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2023-11-26 11:47:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6554621848739496 [2023-11-26 11:47:33,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2023-11-26 11:47:33,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2023-11-26 11:47:33,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:33,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2023-11-26 11:47:33,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 11:47:33,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:47:33,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 11:47:33,462 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 249 flow. Second operand 7 states and 312 transitions. [2023-11-26 11:47:33,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 582 flow [2023-11-26 11:47:33,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 536 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-26 11:47:33,518 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 259 flow [2023-11-26 11:47:33,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-11-26 11:47:33,519 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-11-26 11:47:33,519 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 259 flow [2023-11-26 11:47:33,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 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 11:47:33,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:33,520 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, 1, 1, 1, 1] [2023-11-26 11:47:33,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:47:33,520 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:33,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1410878370, now seen corresponding path program 1 times [2023-11-26 11:47:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:33,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355481115] [2023-11-26 11:47:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:33,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:34,340 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 11:47:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355481115] [2023-11-26 11:47:34,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355481115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:34,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:34,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:47:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348466658] [2023-11-26 11:47:34,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:34,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:47:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:47:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:47:34,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-26 11:47:34,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 11:47:34,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:34,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-26 11:47:34,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:35,524 INFO L124 PetriNetUnfolderBase]: 4356/6977 cut-off events. [2023-11-26 11:47:35,525 INFO L125 PetriNetUnfolderBase]: For 3189/3401 co-relation queries the response was YES. [2023-11-26 11:47:35,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16116 conditions, 6977 events. 4356/6977 cut-off events. For 3189/3401 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 46732 event pairs, 799 based on Foata normal form. 16/6667 useless extension candidates. Maximal degree in co-relation 16099. Up to 3381 conditions per place. [2023-11-26 11:47:35,571 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 55 selfloop transitions, 2 changer transitions 12/101 dead transitions. [2023-11-26 11:47:35,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 496 flow [2023-11-26 11:47:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:47:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:47:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2023-11-26 11:47:35,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2023-11-26 11:47:35,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 268 transitions. [2023-11-26 11:47:35,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 268 transitions. [2023-11-26 11:47:35,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:35,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 268 transitions. [2023-11-26 11:47:35,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 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 11:47:35,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 11:47:35,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 11:47:35,577 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 259 flow. Second operand 6 states and 268 transitions. [2023-11-26 11:47:35,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 496 flow [2023-11-26 11:47:35,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 390 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-11-26 11:47:35,637 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 180 flow [2023-11-26 11:47:35,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-11-26 11:47:35,638 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2023-11-26 11:47:35,638 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 180 flow [2023-11-26 11:47:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 11:47:35,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:35,639 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, 1, 1, 1, 1] [2023-11-26 11:47:35,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:47:35,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-26 11:47:35,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1871084706, now seen corresponding path program 2 times [2023-11-26 11:47:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:35,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803417938] [2023-11-26 11:47:35,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat